/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-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 23:19:28,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 23:19:28,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 23:19:28,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 23:19:28,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 23:19:28,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 23:19:28,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 23:19:28,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 23:19:28,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 23:19:28,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 23:19:28,870 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 23:19:28,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 23:19:28,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 23:19:28,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 23:19:28,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 23:19:28,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 23:19:28,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 23:19:28,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 23:19:28,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 23:19:28,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 23:19:28,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 23:19:28,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 23:19:28,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 23:19:28,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 23:19:28,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 23:19:28,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 23:19:28,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 23:19:28,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 23:19:28,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 23:19:28,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 23:19:28,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 23:19:28,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 23:19:28,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 23:19:28,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 23:19:28,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 23:19:28,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 23:19:28,907 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 23:19:28,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 23:19:28,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 23:19:28,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 23:19:28,909 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 23:19:28,911 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-RepeatedSemanticLbe.epf [2022-12-05 23:19:28,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 23:19:28,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 23:19:28,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 23:19:28,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 23:19:28,943 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 23:19:28,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 23:19:28,944 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 23:19:28,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 23:19:28,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 23:19:28,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 23:19:28,945 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 23:19:28,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 23:19:28,959 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 23:19:28,959 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 23:19:28,959 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 23:19:28,959 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 23:19:28,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 23:19:28,960 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 23:19:28,960 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 23:19:28,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 23:19:28,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 23:19:28,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 23:19:28,961 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 23:19:28,961 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 23:19:28,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 23:19:28,961 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 23:19:28,961 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 23:19:28,961 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-05 23:19:28,962 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 23:19:29,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 23:19:29,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 23:19:29,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 23:19:29,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 23:19:29,298 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 23:19:29,299 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 23:19:30,449 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 23:19:30,666 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 23:19:30,666 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 23:19:30,679 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3a3a8fc/27e4a96a2be9419193f972b20041e745/FLAGba0b908aa [2022-12-05 23:19:30,690 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b3a3a8fc/27e4a96a2be9419193f972b20041e745 [2022-12-05 23:19:30,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 23:19:30,693 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 23:19:30,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 23:19:30,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 23:19:30,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 23:19:30,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:19:30" (1/1) ... [2022-12-05 23:19:30,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4f65ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:30, skipping insertion in model container [2022-12-05 23:19:30,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 11:19:30" (1/1) ... [2022-12-05 23:19:30,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 23:19:30,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 23:19:30,851 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 23:19:31,003 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,004 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,005 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,006 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,007 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,008 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,009 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,010 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,021 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,022 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,023 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,024 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 23:19:31,035 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 23:19:31,049 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/safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-12-05 23:19:31,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,085 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,086 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,087 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,093 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,098 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,099 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,100 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 23:19:31,101 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 23:19:31,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 23:19:31,144 INFO L208 MainTranslator]: Completed translation [2022-12-05 23:19:31,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31 WrapperNode [2022-12-05 23:19:31,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 23:19:31,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 23:19:31,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 23:19:31,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 23:19:31,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,205 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-12-05 23:19:31,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 23:19:31,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 23:19:31,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 23:19:31,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 23:19:31,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,242 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 23:19:31,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 23:19:31,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 23:19:31,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 23:19:31,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (1/1) ... [2022-12-05 23:19:31,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 23:19:31,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 23:19:31,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-05 23:19:31,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-05 23:19:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 23:19:31,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 23:19:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 23:19:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 23:19:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 23:19:31,328 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-12-05 23:19:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-12-05 23:19:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-12-05 23:19:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-12-05 23:19:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-12-05 23:19:31,329 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-12-05 23:19:31,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 23:19:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 23:19:31,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 23:19:31,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 23:19:31,332 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 23:19:31,447 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 23:19:31,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 23:19:31,639 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 23:19:31,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 23:19:31,648 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 23:19:31,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:19:31 BoogieIcfgContainer [2022-12-05 23:19:31,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 23:19:31,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 23:19:31,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 23:19:31,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 23:19:31,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 11:19:30" (1/3) ... [2022-12-05 23:19:31,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee8021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 11:19:31, skipping insertion in model container [2022-12-05 23:19:31,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 11:19:31" (2/3) ... [2022-12-05 23:19:31,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ee8021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 11:19:31, skipping insertion in model container [2022-12-05 23:19:31,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 11:19:31" (3/3) ... [2022-12-05 23:19:31,662 INFO L112 eAbstractionObserver]: Analyzing ICFG safe028_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-12-05 23:19:31,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 23:19:31,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 23:19:31,678 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 23:19:31,771 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-05 23:19:31,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2022-12-05 23:19:31,907 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2022-12-05 23:19:31,907 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 23:19:31,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-12-05 23:19:31,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2022-12-05 23:19:31,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2022-12-05 23:19:31,921 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:31,947 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-05 23:19:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2022-12-05 23:19:31,989 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2022-12-05 23:19:31,990 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 23:19:31,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2022-12-05 23:19:31,993 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2022-12-05 23:19:31,993 INFO L188 LiptonReduction]: Number of co-enabled transitions 974 [2022-12-05 23:19:34,106 INFO L203 LiptonReduction]: Total number of compositions: 53 [2022-12-05 23:19:34,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 23:19:34,125 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=REPEATED_LIPTON_PN, 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;@3cd2d59c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 23:19:34,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-05 23:19:34,129 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2022-12-05 23:19:34,129 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 23:19:34,130 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:19:34,130 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:34,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 23:19:34,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:19:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1659103957, now seen corresponding path program 1 times [2022-12-05 23:19:34,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:19:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272265685] [2022-12-05 23:19:34,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:19:34,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:19:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:19:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:19:34,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:19:34,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272265685] [2022-12-05 23:19:34,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272265685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:19:34,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:19:34,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-05 23:19:34,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505931325] [2022-12-05 23:19:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:19:34,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 23:19:34,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:19:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 23:19:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 23:19:34,579 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 17 [2022-12-05 23:19:34,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:34,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:19:34,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 17 [2022-12-05 23:19:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:19:34,643 INFO L130 PetriNetUnfolder]: 143/259 cut-off events. [2022-12-05 23:19:34,643 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-05 23:19:34,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 259 events. 143/259 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 993 event pairs, 53 based on Foata normal form. 9/267 useless extension candidates. Maximal degree in co-relation 519. Up to 154 conditions per place. [2022-12-05 23:19:34,646 INFO L137 encePairwiseOnDemand]: 13/17 looper letters, 17 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-12-05 23:19:34,646 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 89 flow [2022-12-05 23:19:34,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 23:19:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 23:19:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2022-12-05 23:19:34,659 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2022-12-05 23:19:34,660 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 43 flow. Second operand 3 states and 28 transitions. [2022-12-05 23:19:34,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 89 flow [2022-12-05 23:19:34,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 86 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 23:19:34,664 INFO L231 Difference]: Finished difference. Result has 26 places, 16 transitions, 46 flow [2022-12-05 23:19:34,665 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=26, PETRI_TRANSITIONS=16} [2022-12-05 23:19:34,669 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2022-12-05 23:19:34,669 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:19:34,670 INFO L89 Accepts]: Start accepts. Operand has 26 places, 16 transitions, 46 flow [2022-12-05 23:19:34,672 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:19:34,672 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:34,672 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 16 transitions, 46 flow [2022-12-05 23:19:34,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 16 transitions, 46 flow [2022-12-05 23:19:34,685 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-05 23:19:34,685 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 23:19:34,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 16 events. 0/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 15 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-05 23:19:34,686 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 16 transitions, 46 flow [2022-12-05 23:19:34,686 INFO L188 LiptonReduction]: Number of co-enabled transitions 104 [2022-12-05 23:19:34,712 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:19:34,714 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 45 [2022-12-05 23:19:34,714 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 16 transitions, 46 flow [2022-12-05 23:19:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:34,715 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:19:34,715 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:34,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 23:19:34,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 23:19:34,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:19:34,719 INFO L85 PathProgramCache]: Analyzing trace with hash 107383858, now seen corresponding path program 1 times [2022-12-05 23:19:34,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:19:34,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799403891] [2022-12-05 23:19:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:19:34,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:19:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:19:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:19:34,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:19:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799403891] [2022-12-05 23:19:34,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799403891] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:19:34,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:19:34,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 23:19:34,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326905735] [2022-12-05 23:19:34,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:19:34,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 23:19:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:19:34,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 23:19:34,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 23:19:34,901 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 16 [2022-12-05 23:19:34,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:34,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:19:34,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 16 [2022-12-05 23:19:34,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:19:34,991 INFO L130 PetriNetUnfolder]: 223/400 cut-off events. [2022-12-05 23:19:34,991 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-12-05 23:19:34,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 400 events. 223/400 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1663 event pairs, 43 based on Foata normal form. 24/424 useless extension candidates. Maximal degree in co-relation 868. Up to 168 conditions per place. [2022-12-05 23:19:34,994 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 23 selfloop transitions, 3 changer transitions 3/30 dead transitions. [2022-12-05 23:19:34,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 137 flow [2022-12-05 23:19:34,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 23:19:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 23:19:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 35 transitions. [2022-12-05 23:19:34,996 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.546875 [2022-12-05 23:19:34,996 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 46 flow. Second operand 4 states and 35 transitions. [2022-12-05 23:19:34,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 137 flow [2022-12-05 23:19:34,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-05 23:19:34,997 INFO L231 Difference]: Finished difference. Result has 29 places, 16 transitions, 56 flow [2022-12-05 23:19:34,997 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=16} [2022-12-05 23:19:34,998 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2022-12-05 23:19:34,998 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:19:34,998 INFO L89 Accepts]: Start accepts. Operand has 29 places, 16 transitions, 56 flow [2022-12-05 23:19:34,999 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:19:34,999 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:34,999 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 16 transitions, 56 flow [2022-12-05 23:19:35,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 16 transitions, 56 flow [2022-12-05 23:19:35,002 INFO L130 PetriNetUnfolder]: 0/16 cut-off events. [2022-12-05 23:19:35,002 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 23:19:35,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 16 events. 0/16 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 14 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2022-12-05 23:19:35,003 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 16 transitions, 56 flow [2022-12-05 23:19:35,003 INFO L188 LiptonReduction]: Number of co-enabled transitions 96 [2022-12-05 23:19:35,008 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:19:35,009 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 11 [2022-12-05 23:19:35,009 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 16 transitions, 56 flow [2022-12-05 23:19:35,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,009 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:19:35,009 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:35,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 23:19:35,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 23:19:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:19:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash -966069686, now seen corresponding path program 1 times [2022-12-05 23:19:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:19:35,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005417406] [2022-12-05 23:19:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:19:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:19:35,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:19:35,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:19:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:19:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005417406] [2022-12-05 23:19:35,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005417406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:19:35,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:19:35,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-05 23:19:35,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524066430] [2022-12-05 23:19:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:19:35,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 23:19:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:19:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 23:19:35,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 23:19:35,125 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 16 [2022-12-05 23:19:35,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 16 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:19:35,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 16 [2022-12-05 23:19:35,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:19:35,193 INFO L130 PetriNetUnfolder]: 105/200 cut-off events. [2022-12-05 23:19:35,194 INFO L131 PetriNetUnfolder]: For 157/157 co-relation queries the response was YES. [2022-12-05 23:19:35,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 200 events. 105/200 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 703 event pairs, 27 based on Foata normal form. 12/211 useless extension candidates. Maximal degree in co-relation 521. Up to 123 conditions per place. [2022-12-05 23:19:35,197 INFO L137 encePairwiseOnDemand]: 10/16 looper letters, 20 selfloop transitions, 4 changer transitions 13/39 dead transitions. [2022-12-05 23:19:35,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 204 flow [2022-12-05 23:19:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 23:19:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 23:19:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 49 transitions. [2022-12-05 23:19:35,200 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6125 [2022-12-05 23:19:35,200 INFO L175 Difference]: Start difference. First operand has 29 places, 16 transitions, 56 flow. Second operand 5 states and 49 transitions. [2022-12-05 23:19:35,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 204 flow [2022-12-05 23:19:35,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 177 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-05 23:19:35,202 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 80 flow [2022-12-05 23:19:35,202 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2022-12-05 23:19:35,203 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2022-12-05 23:19:35,203 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:19:35,203 INFO L89 Accepts]: Start accepts. Operand has 32 places, 19 transitions, 80 flow [2022-12-05 23:19:35,204 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:19:35,204 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:35,205 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 32 places, 19 transitions, 80 flow [2022-12-05 23:19:35,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 19 transitions, 80 flow [2022-12-05 23:19:35,214 INFO L130 PetriNetUnfolder]: 23/55 cut-off events. [2022-12-05 23:19:35,214 INFO L131 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2022-12-05 23:19:35,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 55 events. 23/55 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 157 event pairs, 11 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 147. Up to 38 conditions per place. [2022-12-05 23:19:35,215 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 19 transitions, 80 flow [2022-12-05 23:19:35,215 INFO L188 LiptonReduction]: Number of co-enabled transitions 102 [2022-12-05 23:19:35,218 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:19:35,219 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 16 [2022-12-05 23:19:35,219 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 19 transitions, 80 flow [2022-12-05 23:19:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,219 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:19:35,219 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:35,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 23:19:35,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 23:19:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:19:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1353095977, now seen corresponding path program 1 times [2022-12-05 23:19:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:19:35,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318231278] [2022-12-05 23:19:35,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:19:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:19:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:19:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:19:35,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:19:35,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318231278] [2022-12-05 23:19:35,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318231278] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:19:35,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:19:35,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 23:19:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710097961] [2022-12-05 23:19:35,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:19:35,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 23:19:35,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:19:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 23:19:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-05 23:19:35,372 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 16 [2022-12-05 23:19:35,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 19 transitions, 80 flow. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:19:35,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 16 [2022-12-05 23:19:35,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:19:35,446 INFO L130 PetriNetUnfolder]: 71/146 cut-off events. [2022-12-05 23:19:35,446 INFO L131 PetriNetUnfolder]: For 103/107 co-relation queries the response was YES. [2022-12-05 23:19:35,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 146 events. 71/146 cut-off events. For 103/107 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 458 event pairs, 14 based on Foata normal form. 14/159 useless extension candidates. Maximal degree in co-relation 470. Up to 71 conditions per place. [2022-12-05 23:19:35,448 INFO L137 encePairwiseOnDemand]: 10/16 looper letters, 24 selfloop transitions, 7 changer transitions 12/45 dead transitions. [2022-12-05 23:19:35,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 45 transitions, 272 flow [2022-12-05 23:19:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-05 23:19:35,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-05 23:19:35,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-12-05 23:19:35,449 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.59375 [2022-12-05 23:19:35,449 INFO L175 Difference]: Start difference. First operand has 30 places, 19 transitions, 80 flow. Second operand 6 states and 57 transitions. [2022-12-05 23:19:35,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 45 transitions, 272 flow [2022-12-05 23:19:35,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 266 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 23:19:35,452 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 130 flow [2022-12-05 23:19:35,452 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=130, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2022-12-05 23:19:35,453 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2022-12-05 23:19:35,453 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:19:35,453 INFO L89 Accepts]: Start accepts. Operand has 36 places, 22 transitions, 130 flow [2022-12-05 23:19:35,454 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:19:35,454 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:35,454 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 36 places, 22 transitions, 130 flow [2022-12-05 23:19:35,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 22 transitions, 130 flow [2022-12-05 23:19:35,459 INFO L130 PetriNetUnfolder]: 11/37 cut-off events. [2022-12-05 23:19:35,459 INFO L131 PetriNetUnfolder]: For 73/88 co-relation queries the response was YES. [2022-12-05 23:19:35,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 37 events. 11/37 cut-off events. For 73/88 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 66 event pairs, 2 based on Foata normal form. 2/38 useless extension candidates. Maximal degree in co-relation 131. Up to 23 conditions per place. [2022-12-05 23:19:35,459 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 34 places, 22 transitions, 130 flow [2022-12-05 23:19:35,460 INFO L188 LiptonReduction]: Number of co-enabled transitions 100 [2022-12-05 23:19:35,461 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:19:35,462 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 9 [2022-12-05 23:19:35,462 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 130 flow [2022-12-05 23:19:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,462 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:19:35,462 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:35,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 23:19:35,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 23:19:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:19:35,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1462436457, now seen corresponding path program 1 times [2022-12-05 23:19:35,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:19:35,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70721394] [2022-12-05 23:19:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:19:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:19:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:19:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:19:35,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:19:35,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70721394] [2022-12-05 23:19:35,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70721394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:19:35,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:19:35,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-05 23:19:35,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862920396] [2022-12-05 23:19:35,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:19:35,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 23:19:35,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:19:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 23:19:35,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-05 23:19:35,562 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 16 [2022-12-05 23:19:35,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:19:35,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 16 [2022-12-05 23:19:35,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:19:35,630 INFO L130 PetriNetUnfolder]: 50/107 cut-off events. [2022-12-05 23:19:35,630 INFO L131 PetriNetUnfolder]: For 182/190 co-relation queries the response was YES. [2022-12-05 23:19:35,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 107 events. 50/107 cut-off events. For 182/190 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 295 event pairs, 12 based on Foata normal form. 13/119 useless extension candidates. Maximal degree in co-relation 383. Up to 46 conditions per place. [2022-12-05 23:19:35,631 INFO L137 encePairwiseOnDemand]: 10/16 looper letters, 21 selfloop transitions, 10 changer transitions 6/39 dead transitions. [2022-12-05 23:19:35,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 279 flow [2022-12-05 23:19:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 23:19:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 23:19:35,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 53 transitions. [2022-12-05 23:19:35,633 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4732142857142857 [2022-12-05 23:19:35,633 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 130 flow. Second operand 7 states and 53 transitions. [2022-12-05 23:19:35,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 279 flow [2022-12-05 23:19:35,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 243 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-12-05 23:19:35,636 INFO L231 Difference]: Finished difference. Result has 39 places, 22 transitions, 132 flow [2022-12-05 23:19:35,636 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=16, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=39, PETRI_TRANSITIONS=22} [2022-12-05 23:19:35,637 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2022-12-05 23:19:35,637 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:19:35,637 INFO L89 Accepts]: Start accepts. Operand has 39 places, 22 transitions, 132 flow [2022-12-05 23:19:35,638 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:19:35,638 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:35,638 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 22 transitions, 132 flow [2022-12-05 23:19:35,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 22 transitions, 132 flow [2022-12-05 23:19:35,642 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2022-12-05 23:19:35,642 INFO L131 PetriNetUnfolder]: For 40/47 co-relation queries the response was YES. [2022-12-05 23:19:35,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 25 events. 5/25 cut-off events. For 40/47 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 73. Up to 11 conditions per place. [2022-12-05 23:19:35,643 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 22 transitions, 132 flow [2022-12-05 23:19:35,643 INFO L188 LiptonReduction]: Number of co-enabled transitions 86 [2022-12-05 23:19:35,742 INFO L203 LiptonReduction]: Total number of compositions: 2 [2022-12-05 23:19:35,743 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 106 [2022-12-05 23:19:35,743 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 128 flow [2022-12-05 23:19:35,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,744 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:19:35,744 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:35,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 23:19:35,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 23:19:35,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:19:35,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2034650265, now seen corresponding path program 1 times [2022-12-05 23:19:35,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:19:35,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571818615] [2022-12-05 23:19:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:19:35,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:19:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:19:35,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:19:35,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:19:35,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571818615] [2022-12-05 23:19:35,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571818615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:19:35,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:19:35,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 23:19:35,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330438545] [2022-12-05 23:19:35,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:19:35,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 23:19:35,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:19:35,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 23:19:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 23:19:35,862 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 14 [2022-12-05 23:19:35,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:19:35,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 14 [2022-12-05 23:19:35,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:19:35,918 INFO L130 PetriNetUnfolder]: 50/120 cut-off events. [2022-12-05 23:19:35,919 INFO L131 PetriNetUnfolder]: For 236/236 co-relation queries the response was YES. [2022-12-05 23:19:35,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 120 events. 50/120 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 415 event pairs, 5 based on Foata normal form. 1/121 useless extension candidates. Maximal degree in co-relation 403. Up to 67 conditions per place. [2022-12-05 23:19:35,920 INFO L137 encePairwiseOnDemand]: 11/14 looper letters, 22 selfloop transitions, 1 changer transitions 15/39 dead transitions. [2022-12-05 23:19:35,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 331 flow [2022-12-05 23:19:35,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-05 23:19:35,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-05 23:19:35,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2022-12-05 23:19:35,921 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2022-12-05 23:19:35,921 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 128 flow. Second operand 4 states and 29 transitions. [2022-12-05 23:19:35,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 331 flow [2022-12-05 23:19:35,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 39 transitions, 257 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-12-05 23:19:35,924 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 97 flow [2022-12-05 23:19:35,924 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=14, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2022-12-05 23:19:35,925 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2022-12-05 23:19:35,925 WARN L163 eatedLiptonReduction]: Counterexample is not a run of mAbstraction. Replaying acceptance of the word... [2022-12-05 23:19:35,925 INFO L89 Accepts]: Start accepts. Operand has 34 places, 20 transitions, 97 flow [2022-12-05 23:19:35,926 INFO L95 Accepts]: Finished accepts. [2022-12-05 23:19:35,926 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:35,926 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 34 places, 20 transitions, 97 flow [2022-12-05 23:19:35,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 20 transitions, 97 flow [2022-12-05 23:19:35,930 INFO L130 PetriNetUnfolder]: 6/28 cut-off events. [2022-12-05 23:19:35,930 INFO L131 PetriNetUnfolder]: For 28/29 co-relation queries the response was YES. [2022-12-05 23:19:35,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 28 events. 6/28 cut-off events. For 28/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 1/28 useless extension candidates. Maximal degree in co-relation 67. Up to 10 conditions per place. [2022-12-05 23:19:35,931 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 33 places, 20 transitions, 97 flow [2022-12-05 23:19:35,931 INFO L188 LiptonReduction]: Number of co-enabled transitions 64 [2022-12-05 23:19:35,952 INFO L203 LiptonReduction]: Total number of compositions: 1 [2022-12-05 23:19:35,953 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 28 [2022-12-05 23:19:35,953 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 95 flow [2022-12-05 23:19:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:35,953 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 23:19:35,953 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:35,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 23:19:35,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-05 23:19:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 23:19:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash 9391846, now seen corresponding path program 1 times [2022-12-05 23:19:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 23:19:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898053667] [2022-12-05 23:19:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 23:19:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 23:19:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 23:19:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 23:19:36,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 23:19:36,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898053667] [2022-12-05 23:19:36,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898053667] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 23:19:36,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 23:19:36,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 23:19:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274940119] [2022-12-05 23:19:36,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 23:19:36,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-05 23:19:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 23:19:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-05 23:19:36,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-05 23:19:36,052 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 13 [2022-12-05 23:19:36,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 95 flow. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:36,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 23:19:36,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 13 [2022-12-05 23:19:36,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 23:19:36,096 INFO L130 PetriNetUnfolder]: 50/108 cut-off events. [2022-12-05 23:19:36,097 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-12-05 23:19:36,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 108 events. 50/108 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 327 event pairs, 4 based on Foata normal form. 1/109 useless extension candidates. Maximal degree in co-relation 372. Up to 52 conditions per place. [2022-12-05 23:19:36,097 INFO L137 encePairwiseOnDemand]: 8/13 looper letters, 0 selfloop transitions, 0 changer transitions 36/36 dead transitions. [2022-12-05 23:19:36,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 234 flow [2022-12-05 23:19:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-05 23:19:36,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-05 23:19:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2022-12-05 23:19:36,098 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2022-12-05 23:19:36,098 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 95 flow. Second operand 5 states and 28 transitions. [2022-12-05 23:19:36,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 234 flow [2022-12-05 23:19:36,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 36 transitions, 199 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-05 23:19:36,100 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2022-12-05 23:19:36,100 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=13, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2022-12-05 23:19:36,101 INFO L294 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2022-12-05 23:19:36,101 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 23:19:36,101 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 0 transitions, 0 flow [2022-12-05 23:19:36,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 0 places, 0 transitions, 0 flow [2022-12-05 23:19:36,101 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-05 23:19:36,101 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-05 23:19:36,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 0 conditions, 0 events. 0/0 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 0. Compared 0 event pairs, 0 based on Foata normal form. 0/0 useless extension candidates. Maximal degree in co-relation 0. Up to 0 conditions per place. [2022-12-05 23:19:36,102 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 0 places, 0 transitions, 0 flow [2022-12-05 23:19:36,102 INFO L188 LiptonReduction]: Number of co-enabled transitions 0 [2022-12-05 23:19:36,102 INFO L203 LiptonReduction]: Total number of compositions: 0 [2022-12-05 23:19:36,103 INFO L143 eatedLiptonReduction]: Time needed for LBE in milliseconds: 2 [2022-12-05 23:19:36,103 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-05 23:19:36,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-05 23:19:36,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-05 23:19:36,105 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-05 23:19:36,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-05 23:19:36,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-05 23:19:36,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 23:19:36,106 INFO L458 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-05 23:19:36,108 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 23:19:36,108 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 23:19:36,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 11:19:36 BasicIcfg [2022-12-05 23:19:36,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 23:19:36,111 INFO L158 Benchmark]: Toolchain (without parser) took 5417.86ms. Allocated memory was 196.1MB in the beginning and 254.8MB in the end (delta: 58.7MB). Free memory was 161.7MB in the beginning and 153.8MB in the end (delta: 7.9MB). Peak memory consumption was 67.0MB. Max. memory is 8.0GB. [2022-12-05 23:19:36,111 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory was 174.3MB in the beginning and 174.2MB in the end (delta: 93.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 23:19:36,112 INFO L158 Benchmark]: CACSL2BoogieTranslator took 450.75ms. Allocated memory is still 196.1MB. Free memory was 161.7MB in the beginning and 138.5MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-12-05 23:19:36,112 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.67ms. Allocated memory is still 196.1MB. Free memory was 138.5MB in the beginning and 136.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 23:19:36,112 INFO L158 Benchmark]: Boogie Preprocessor took 39.05ms. Allocated memory is still 196.1MB. Free memory was 136.6MB in the beginning and 135.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 23:19:36,112 INFO L158 Benchmark]: RCFGBuilder took 404.81ms. Allocated memory is still 196.1MB. Free memory was 135.1MB in the beginning and 121.4MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 23:19:36,113 INFO L158 Benchmark]: TraceAbstraction took 4458.04ms. Allocated memory was 196.1MB in the beginning and 254.8MB in the end (delta: 58.7MB). Free memory was 120.8MB in the beginning and 153.8MB in the end (delta: -33.0MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. [2022-12-05 23:19:36,114 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 196.1MB. Free memory was 174.3MB in the beginning and 174.2MB in the end (delta: 93.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 450.75ms. Allocated memory is still 196.1MB. Free memory was 161.7MB in the beginning and 138.5MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.67ms. Allocated memory is still 196.1MB. Free memory was 138.5MB in the beginning and 136.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.05ms. Allocated memory is still 196.1MB. Free memory was 136.6MB in the beginning and 135.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 404.81ms. Allocated memory is still 196.1MB. Free memory was 135.1MB in the beginning and 121.4MB in the end (delta: 13.7MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4458.04ms. Allocated memory was 196.1MB in the beginning and 254.8MB in the end (delta: 58.7MB). Free memory was 120.8MB in the beginning and 153.8MB in the end (delta: -33.0MB). Peak memory consumption was 26.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 78 PlacesBefore, 26 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 32 ConcurrentYvCompositions, 0 ChoiceCompositions, 53 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 680, independent: 646, independent conditional: 646, independent unconditional: 0, dependent: 34, dependent conditional: 34, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 680, independent: 646, independent conditional: 0, independent unconditional: 646, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 680, independent: 646, independent conditional: 0, independent unconditional: 646, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 680, independent: 646, independent conditional: 0, independent unconditional: 646, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 595, independent: 570, independent conditional: 0, independent unconditional: 570, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 595, independent: 564, independent conditional: 0, independent unconditional: 564, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 83, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 680, independent: 76, independent conditional: 0, independent unconditional: 76, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 595, unknown conditional: 0, unknown unconditional: 595] , Statistics on independence cache: Total cache size (in pairs): 886, Positive cache size: 861, Positive conditional cache size: 0, Positive unconditional cache size: 861, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 26 PlacesBefore, 26 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 104 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 45, independent: 35, independent conditional: 35, independent unconditional: 0, dependent: 10, dependent conditional: 10, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 45, independent: 35, independent conditional: 3, independent unconditional: 32, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 45, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 45, independent: 35, independent conditional: 0, independent unconditional: 35, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 41, independent: 34, independent conditional: 0, independent unconditional: 34, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 41, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 24, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 45, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 41, unknown conditional: 0, unknown unconditional: 41] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 29 PlacesBefore, 29 PlacesAfterwards, 16 TransitionsBefore, 16 TransitionsAfterwards, 96 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 40, independent: 31, independent conditional: 31, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 40, independent: 31, independent conditional: 3, independent unconditional: 28, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 40, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 40, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 9, dependent conditional: 2, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 2, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 3, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 3, dependent conditional: 3, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 40, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 9, Negative conditional cache size: 2, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 3, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 30 PlacesBefore, 30 PlacesAfterwards, 19 TransitionsBefore, 19 TransitionsAfterwards, 102 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 22, independent: 15, independent conditional: 15, independent unconditional: 0, dependent: 7, dependent conditional: 7, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 22, independent: 15, independent conditional: 2, independent unconditional: 13, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 22, independent: 15, independent conditional: 1, independent unconditional: 14, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 22, independent: 15, independent conditional: 1, independent unconditional: 14, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 22, independent: 15, independent conditional: 1, independent unconditional: 14, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 43, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 9, Negative conditional cache size: 2, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 34 PlacesBefore, 34 PlacesAfterwards, 22 TransitionsBefore, 22 TransitionsAfterwards, 100 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 34, independent: 25, independent conditional: 25, independent unconditional: 0, dependent: 9, dependent conditional: 9, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 34, independent: 25, independent conditional: 3, independent unconditional: 22, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 34, independent: 25, independent conditional: 2, independent unconditional: 23, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 34, independent: 25, independent conditional: 2, independent unconditional: 23, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 34, independent: 23, independent conditional: 2, independent unconditional: 21, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 9, Negative conditional cache size: 2, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 1, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 37 PlacesBefore, 35 PlacesAfterwards, 22 TransitionsBefore, 20 TransitionsAfterwards, 86 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 2 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 68, independent: 52, independent conditional: 52, independent unconditional: 0, dependent: 16, dependent conditional: 16, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 68, independent: 52, independent conditional: 24, independent unconditional: 28, dependent: 16, dependent conditional: 8, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 68, independent: 52, independent conditional: 10, independent unconditional: 42, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 68, independent: 52, independent conditional: 10, independent unconditional: 42, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 1, independent unconditional: 4, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 2, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 68, independent: 47, independent conditional: 9, independent unconditional: 38, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 7, unknown conditional: 1, unknown unconditional: 6] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 41, Positive conditional cache size: 1, Positive unconditional cache size: 40, Negative cache size: 11, Negative conditional cache size: 2, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 22, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 33 PlacesBefore, 32 PlacesAfterwards, 20 TransitionsBefore, 19 TransitionsAfterwards, 64 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 33, independent: 27, independent conditional: 27, independent unconditional: 0, dependent: 6, dependent conditional: 6, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 33, independent: 27, independent conditional: 4, independent unconditional: 23, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 33, independent: 27, independent conditional: 4, independent unconditional: 23, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 33, independent: 27, independent conditional: 4, independent unconditional: 23, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33, independent: 27, independent conditional: 4, independent unconditional: 23, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 1, unknown conditional: 0, unknown unconditional: 1] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 12, Negative conditional cache size: 2, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.0s, 0 PlacesBefore, 0 PlacesAfterwards, 0 TransitionsBefore, 0 TransitionsAfterwards, 0 CoEnabledTransitionPairs, 1 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 0 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 48, Positive conditional cache size: 1, Positive unconditional cache size: 47, Negative cache size: 12, Negative conditional cache size: 2, Negative unconditional cache size: 10, 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, 106 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 335 IncrementalHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 0 mSDtfsCounter, 335 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=5, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 259 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-05 23:19:36,132 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...