./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 00:30:40,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 00:30:40,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 00:30:40,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 00:30:40,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 00:30:40,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 00:30:40,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 00:30:40,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 00:30:41,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 00:30:41,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 00:30:41,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 00:30:41,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 00:30:41,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 00:30:41,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 00:30:41,012 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 00:30:41,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 00:30:41,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 00:30:41,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 00:30:41,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 00:30:41,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 00:30:41,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 00:30:41,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 00:30:41,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 00:30:41,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 00:30:41,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 00:30:41,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 00:30:41,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 00:30:41,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 00:30:41,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 00:30:41,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 00:30:41,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 00:30:41,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 00:30:41,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 00:30:41,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 00:30:41,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 00:30:41,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 00:30:41,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 00:30:41,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 00:30:41,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 00:30:41,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 00:30:41,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 00:30:41,050 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 00:30:41,089 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 00:30:41,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 00:30:41,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 00:30:41,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 00:30:41,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 00:30:41,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 00:30:41,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 00:30:41,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 00:30:41,093 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 00:30:41,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 00:30:41,094 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 00:30:41,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 00:30:41,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 00:30:41,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 00:30:41,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 00:30:41,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 00:30:41,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 00:30:41,095 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 00:30:41,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 00:30:41,095 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 00:30:41,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 00:30:41,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 00:30:41,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 00:30:41,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 00:30:41,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:30:41,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 00:30:41,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 00:30:41,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 00:30:41,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 00:30:41,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 00:30:41,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 00:30:41,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 00:30:41,098 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 00:30:41,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 00:30:41,098 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 00:30:41,098 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 00:30:41,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 00:30:41,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 00:30:41,425 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 00:30:41,426 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 00:30:41,427 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 00:30:41,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-31 00:30:42,561 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 00:30:42,843 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 00:30:42,845 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-08-31 00:30:42,870 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f571de9/67d140cfb25641df9ecfe952674e9bd2/FLAGf56281200 [2023-08-31 00:30:42,888 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f571de9/67d140cfb25641df9ecfe952674e9bd2 [2023-08-31 00:30:42,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 00:30:42,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 00:30:42,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 00:30:42,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 00:30:42,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 00:30:42,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:30:42" (1/1) ... [2023-08-31 00:30:42,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75084e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:42, skipping insertion in model container [2023-08-31 00:30:42,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:30:42" (1/1) ... [2023-08-31 00:30:42,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 00:30:42,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 00:30:43,329 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-08-31 00:30:43,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:30:43,407 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 00:30:43,482 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2023-08-31 00:30:43,502 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 00:30:43,580 INFO L208 MainTranslator]: Completed translation [2023-08-31 00:30:43,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43 WrapperNode [2023-08-31 00:30:43,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 00:30:43,582 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 00:30:43,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 00:30:43,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 00:30:43,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,662 INFO L138 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 384 [2023-08-31 00:30:43,668 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 00:30:43,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 00:30:43,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 00:30:43,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 00:30:43,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 00:30:43,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 00:30:43,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 00:30:43,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 00:30:43,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (1/1) ... [2023-08-31 00:30:43,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 00:30:43,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 00:30:43,778 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) [2023-08-31 00:30:43,804 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 [2023-08-31 00:30:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 00:30:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-31 00:30:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-31 00:30:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-31 00:30:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 00:30:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 00:30:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-31 00:30:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-31 00:30:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 00:30:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 00:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 00:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 00:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 00:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-08-31 00:30:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-08-31 00:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 00:30:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 00:30:43,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 00:30:43,824 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 00:30:44,027 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 00:30:44,029 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 00:30:44,413 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 00:30:44,423 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 00:30:44,423 INFO L302 CfgBuilder]: Removed 29 assume(true) statements. [2023-08-31 00:30:44,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:30:44 BoogieIcfgContainer [2023-08-31 00:30:44,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 00:30:44,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 00:30:44,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 00:30:44,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 00:30:44,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 12:30:42" (1/3) ... [2023-08-31 00:30:44,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298b2009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:30:44, skipping insertion in model container [2023-08-31 00:30:44,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:30:43" (2/3) ... [2023-08-31 00:30:44,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@298b2009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:30:44, skipping insertion in model container [2023-08-31 00:30:44,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:30:44" (3/3) ... [2023-08-31 00:30:44,438 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-08-31 00:30:44,444 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 00:30:44,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 00:30:44,451 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-31 00:30:44,451 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 00:30:44,590 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 00:30:44,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-08-31 00:30:45,028 INFO L130 PetriNetUnfolder]: 188/1415 cut-off events. [2023-08-31 00:30:45,029 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 00:30:45,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-08-31 00:30:45,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 393 transitions, 828 flow [2023-08-31 00:30:45,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 393 transitions, 828 flow [2023-08-31 00:30:45,078 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:30:45,097 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 393 transitions, 828 flow [2023-08-31 00:30:45,104 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 393 transitions, 828 flow [2023-08-31 00:30:45,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 393 transitions, 828 flow [2023-08-31 00:30:45,363 INFO L130 PetriNetUnfolder]: 188/1415 cut-off events. [2023-08-31 00:30:45,364 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 00:30:45,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1415 events. 188/1415 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9390 event pairs, 0 based on Foata normal form. 0/1219 useless extension candidates. Maximal degree in co-relation 729. Up to 16 conditions per place. [2023-08-31 00:30:45,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 68634 [2023-08-31 00:31:02,732 INFO L134 LiptonReduction]: Checked pairs total: 136367 [2023-08-31 00:31:02,733 INFO L136 LiptonReduction]: Total number of compositions: 314 [2023-08-31 00:31:02,746 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:31:02,751 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@621579fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:31:02,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-31 00:31:02,757 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-08-31 00:31:02,758 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 00:31:02,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:31:02,759 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 00:31:02,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-31 00:31:02,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:31:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1944719290, now seen corresponding path program 1 times [2023-08-31 00:31:02,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:31:02,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572454146] [2023-08-31 00:31:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:31:02,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:31:02,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:31:02,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 00:31:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:31:03,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 00:31:03,076 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 00:31:03,078 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-31 00:31:03,080 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-31 00:31:03,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-31 00:31:03,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-31 00:31:03,081 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-31 00:31:03,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-31 00:31:03,082 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-31 00:31:03,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 00:31:03,083 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 00:31:03,090 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 00:31:03,091 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 00:31:03,190 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-31 00:31:03,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 608 transitions, 1306 flow [2023-08-31 00:31:05,895 INFO L130 PetriNetUnfolder]: 1211/6644 cut-off events. [2023-08-31 00:31:05,897 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-08-31 00:31:06,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 6644 events. 1211/6644 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60780 event pairs, 22 based on Foata normal form. 0/5717 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-08-31 00:31:06,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 534 places, 608 transitions, 1306 flow [2023-08-31 00:31:06,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 534 places, 608 transitions, 1306 flow [2023-08-31 00:31:06,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:31:06,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 534 places, 608 transitions, 1306 flow [2023-08-31 00:31:06,193 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 534 places, 608 transitions, 1306 flow [2023-08-31 00:31:06,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 534 places, 608 transitions, 1306 flow [2023-08-31 00:31:07,945 INFO L130 PetriNetUnfolder]: 1211/6644 cut-off events. [2023-08-31 00:31:07,945 INFO L131 PetriNetUnfolder]: For 602/602 co-relation queries the response was YES. [2023-08-31 00:31:08,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7318 conditions, 6644 events. 1211/6644 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 60780 event pairs, 22 based on Foata normal form. 0/5717 useless extension candidates. Maximal degree in co-relation 4214. Up to 192 conditions per place. [2023-08-31 00:31:08,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 227968 [2023-08-31 00:31:25,809 INFO L134 LiptonReduction]: Checked pairs total: 466123 [2023-08-31 00:31:25,809 INFO L136 LiptonReduction]: Total number of compositions: 471 [2023-08-31 00:31:25,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:31:25,813 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@621579fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:31:25,813 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-31 00:31:25,823 INFO L130 PetriNetUnfolder]: 22/127 cut-off events. [2023-08-31 00:31:25,823 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 00:31:25,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:31:25,824 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 00:31:25,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-31 00:31:25,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:31:25,825 INFO L85 PathProgramCache]: Analyzing trace with hash 675183404, now seen corresponding path program 1 times [2023-08-31 00:31:25,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:31:25,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18566242] [2023-08-31 00:31:25,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:31:25,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:31:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:31:25,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 00:31:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 00:31:25,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 00:31:25,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 00:31:25,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-08-31 00:31:25,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-08-31 00:31:25,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-08-31 00:31:25,891 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 9 remaining) [2023-08-31 00:31:25,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-08-31 00:31:25,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 9 remaining) [2023-08-31 00:31:25,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 9 remaining) [2023-08-31 00:31:25,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-08-31 00:31:25,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-08-31 00:31:25,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 00:31:25,893 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 00:31:25,893 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 00:31:25,894 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 00:31:25,972 INFO L144 ThreadInstanceAdder]: Constructed 27 joinOtherThreadTransitions. [2023-08-31 00:31:25,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 716 places, 823 transitions, 1790 flow [2023-08-31 00:31:40,809 INFO L130 PetriNetUnfolder]: 9176/33999 cut-off events. [2023-08-31 00:31:40,809 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-08-31 00:31:42,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41173 conditions, 33999 events. 9176/33999 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 371707 event pairs, 1024 based on Foata normal form. 0/29607 useless extension candidates. Maximal degree in co-relation 22167. Up to 2304 conditions per place. [2023-08-31 00:31:42,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 716 places, 823 transitions, 1790 flow [2023-08-31 00:31:43,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 716 places, 823 transitions, 1790 flow [2023-08-31 00:31:43,117 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 00:31:43,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 716 places, 823 transitions, 1790 flow [2023-08-31 00:31:43,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 716 places, 823 transitions, 1790 flow [2023-08-31 00:31:43,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 716 places, 823 transitions, 1790 flow [2023-08-31 00:31:57,527 INFO L130 PetriNetUnfolder]: 9176/33999 cut-off events. [2023-08-31 00:31:57,527 INFO L131 PetriNetUnfolder]: For 7059/7059 co-relation queries the response was YES. [2023-08-31 00:31:59,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41173 conditions, 33999 events. 9176/33999 cut-off events. For 7059/7059 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 371707 event pairs, 1024 based on Foata normal form. 0/29607 useless extension candidates. Maximal degree in co-relation 22167. Up to 2304 conditions per place. [2023-08-31 00:32:03,050 INFO L119 LiptonReduction]: Number of co-enabled transitions 478002 [2023-08-31 00:32:22,088 INFO L134 LiptonReduction]: Checked pairs total: 1018535 [2023-08-31 00:32:22,088 INFO L136 LiptonReduction]: Total number of compositions: 633 [2023-08-31 00:32:22,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 00:32:22,091 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@621579fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 00:32:22,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 00:32:22,101 INFO L130 PetriNetUnfolder]: 28/134 cut-off events. [2023-08-31 00:32:22,102 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 00:32:22,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 00:32:22,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 00:32:22,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2023-08-31 00:32:22,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 00:32:22,103 INFO L85 PathProgramCache]: Analyzing trace with hash 161521212, now seen corresponding path program 1 times [2023-08-31 00:32:22,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 00:32:22,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76251562] [2023-08-31 00:32:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 00:32:22,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 00:32:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 00:32:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 00:32:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 00:32:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76251562] [2023-08-31 00:32:22,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76251562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 00:32:22,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 00:32:22,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 00:32:22,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155508235] [2023-08-31 00:32:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 00:32:22,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 00:32:22,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 00:32:22,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 00:32:22,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 00:32:22,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 698 out of 1456 [2023-08-31 00:32:22,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 304 transitions, 752 flow. Second operand has 3 states, 3 states have (on average 701.3333333333334) internal successors, (2104), 3 states have internal predecessors, (2104), 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) [2023-08-31 00:32:22,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 00:32:22,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 698 of 1456 [2023-08-31 00:32:22,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand