./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_28-funptr_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:43:50,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:43:50,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:43:50,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:43:50,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:43:50,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:43:50,133 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:43:50,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:43:50,137 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:43:50,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:43:50,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:43:50,144 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:43:50,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:43:50,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:43:50,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:43:50,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:43:50,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:43:50,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:43:50,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:43:50,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:43:50,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:43:50,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:43:50,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:43:50,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:43:50,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:43:50,170 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:43:50,170 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:43:50,171 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:43:50,172 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:43:50,173 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:43:50,173 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:43:50,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:43:50,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:43:50,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:43:50,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:43:50,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:43:50,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:43:50,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:43:50,183 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:43:50,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:43:50,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:43:50,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:43:50,224 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:43:50,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:43:50,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:43:50,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:43:50,226 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:43:50,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:43:50,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:43:50,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:43:50,227 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:43:50,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:43:50,228 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:43:50,228 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:43:50,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:43:50,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:43:50,229 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:43:50,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:43:50,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:43:50,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:43:50,230 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:43:50,231 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:43:50,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:43:50,235 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:43:50,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:43:50,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:43:50,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:43:50,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:43:50,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:43:50,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:43:50,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:43:50,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:43:50,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:43:50,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:43:50,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:43:50,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:43:50,237 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:43:50,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:43:50,238 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:43:50,238 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5b90ecb07ae966182b79ce4444e238e18068c02297f514a326dfeeed6dbb5499 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:43:50,545 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:43:50,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:43:50,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:43:50,567 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:43:50,568 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:43:50,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-09-01 06:43:51,644 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:43:51,909 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:43:51,914 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_28-funptr_racefree.i [2023-09-01 06:43:51,931 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35d68b64/2fe0c9d059674fb29f6647ff069e36a9/FLAG1bfa51c75 [2023-09-01 06:43:51,942 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b35d68b64/2fe0c9d059674fb29f6647ff069e36a9 [2023-09-01 06:43:51,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:43:51,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:43:51,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:43:51,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:43:51,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:43:51,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:43:51" (1/1) ... [2023-09-01 06:43:51,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f2346dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:51, skipping insertion in model container [2023-09-01 06:43:51,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:43:51" (1/1) ... [2023-09-01 06:43:51,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:43:52,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:43:52,430 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_28-funptr_racefree.i[41323,41336] [2023-09-01 06:43:52,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:43:52,523 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:43:52,566 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_28-funptr_racefree.i[41323,41336] [2023-09-01 06:43:52,581 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:43:52,649 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 06:43:52,655 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:43:52,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52 WrapperNode [2023-09-01 06:43:52,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:43:52,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:43:52,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:43:52,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:43:52,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,723 INFO L138 Inliner]: procedures = 273, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 130 [2023-09-01 06:43:52,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:43:52,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:43:52,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:43:52,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:43:52,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,769 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:43:52,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:43:52,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:43:52,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:43:52,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (1/1) ... [2023-09-01 06:43:52,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:43:52,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:43:52,809 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) [2023-09-01 06:43:52,834 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 [2023-09-01 06:43:52,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:43:52,845 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:43:52,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:43:52,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:43:52,847 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:43:52,956 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:43:52,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:43:53,228 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:43:53,234 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:43:53,234 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 06:43:53,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:43:53 BoogieIcfgContainer [2023-09-01 06:43:53,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:43:53,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:43:53,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:43:53,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:43:53,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:43:51" (1/3) ... [2023-09-01 06:43:53,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb3137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:43:53, skipping insertion in model container [2023-09-01 06:43:53,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:43:52" (2/3) ... [2023-09-01 06:43:53,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eb3137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:43:53, skipping insertion in model container [2023-09-01 06:43:53,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:43:53" (3/3) ... [2023-09-01 06:43:53,248 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_28-funptr_racefree.i [2023-09-01 06:43:53,255 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:43:53,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:43:53,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-09-01 06:43:53,263 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:43:53,368 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 06:43:53,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 134 transitions, 276 flow [2023-09-01 06:43:53,501 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2023-09-01 06:43:53,502 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 06:43:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 17/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 389 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-09-01 06:43:53,507 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 134 transitions, 276 flow [2023-09-01 06:43:53,514 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 125 transitions, 255 flow [2023-09-01 06:43:53,517 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:53,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 125 transitions, 255 flow [2023-09-01 06:43:53,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 125 transitions, 255 flow [2023-09-01 06:43:53,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 125 transitions, 255 flow [2023-09-01 06:43:53,584 INFO L130 PetriNetUnfolder]: 16/161 cut-off events. [2023-09-01 06:43:53,584 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:43:53,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 161 events. 16/161 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 378 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-09-01 06:43:53,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 4048 [2023-09-01 06:43:56,968 INFO L134 LiptonReduction]: Checked pairs total: 7884 [2023-09-01 06:43:56,968 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-09-01 06:43:56,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:56,985 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:56,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:56,989 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-09-01 06:43:56,989 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:43:56,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:56,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:43:56,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:56,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:56,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2105089950, now seen corresponding path program 1 times [2023-09-01 06:43:57,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:57,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978813061] [2023-09-01 06:43:57,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:57,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:57,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:57,190 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:57,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:57,193 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:57,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:43:57,195 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:57,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:57,207 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:57,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:43:57,229 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 06:43:57,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-09-01 06:43:57,269 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-09-01 06:43:57,269 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:43:57,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-09-01 06:43:57,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 180 transitions, 378 flow [2023-09-01 06:43:57,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 180 transitions, 378 flow [2023-09-01 06:43:57,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:57,274 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 180 transitions, 378 flow [2023-09-01 06:43:57,274 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 180 transitions, 378 flow [2023-09-01 06:43:57,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 180 transitions, 378 flow [2023-09-01 06:43:57,317 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-09-01 06:43:57,318 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 06:43:57,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 863 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-09-01 06:43:57,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 13640 [2023-09-01 06:44:00,549 INFO L134 LiptonReduction]: Checked pairs total: 34776 [2023-09-01 06:44:00,549 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-09-01 06:44:00,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:00,552 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:00,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:00,558 INFO L130 PetriNetUnfolder]: 8/62 cut-off events. [2023-09-01 06:44:00,558 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 06:44:00,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:00,558 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:44:00,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:00,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:00,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1070664413, now seen corresponding path program 1 times [2023-09-01 06:44:00,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:00,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967754629] [2023-09-01 06:44:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:00,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:00,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:00,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:00,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:00,613 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:00,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:00,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:44:00,614 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:00,614 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:00,614 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:00,615 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:44:00,637 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 06:44:00,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 226 transitions, 482 flow [2023-09-01 06:44:00,696 INFO L130 PetriNetUnfolder]: 50/445 cut-off events. [2023-09-01 06:44:00,696 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:44:00,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 50/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1571 event pairs, 1 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-09-01 06:44:00,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 226 transitions, 482 flow [2023-09-01 06:44:00,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 226 transitions, 482 flow [2023-09-01 06:44:00,704 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:00,704 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 226 transitions, 482 flow [2023-09-01 06:44:00,705 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 226 transitions, 482 flow [2023-09-01 06:44:00,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 226 transitions, 482 flow [2023-09-01 06:44:00,754 INFO L130 PetriNetUnfolder]: 50/445 cut-off events. [2023-09-01 06:44:00,755 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 06:44:00,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 445 events. 50/445 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1571 event pairs, 1 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-09-01 06:44:00,777 INFO L119 LiptonReduction]: Number of co-enabled transitions 26664 [2023-09-01 06:44:04,112 INFO L134 LiptonReduction]: Checked pairs total: 82223 [2023-09-01 06:44:04,113 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-09-01 06:44:04,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:04,116 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:04,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:04,124 INFO L130 PetriNetUnfolder]: 17/106 cut-off events. [2023-09-01 06:44:04,125 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 06:44:04,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:04,125 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:44:04,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:04,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:04,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1227447783, now seen corresponding path program 1 times [2023-09-01 06:44:04,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:04,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990215309] [2023-09-01 06:44:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:04,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:04,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:04,174 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:04,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:04,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:04,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:44:04,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:04,176 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:04,176 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:04,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:44:04,199 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 06:44:04,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 272 transitions, 588 flow [2023-09-01 06:44:04,302 INFO L130 PetriNetUnfolder]: 81/682 cut-off events. [2023-09-01 06:44:04,303 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:44:04,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 682 events. 81/682 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2768 event pairs, 6 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 465. Up to 32 conditions per place. [2023-09-01 06:44:04,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 272 transitions, 588 flow [2023-09-01 06:44:04,315 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 272 transitions, 588 flow [2023-09-01 06:44:04,315 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:04,315 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 272 transitions, 588 flow [2023-09-01 06:44:04,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 272 transitions, 588 flow [2023-09-01 06:44:04,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 272 transitions, 588 flow [2023-09-01 06:44:04,397 INFO L130 PetriNetUnfolder]: 81/682 cut-off events. [2023-09-01 06:44:04,397 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 06:44:04,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 682 events. 81/682 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2768 event pairs, 6 based on Foata normal form. 0/547 useless extension candidates. Maximal degree in co-relation 465. Up to 32 conditions per place. [2023-09-01 06:44:04,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 43824 [2023-09-01 06:44:07,869 INFO L134 LiptonReduction]: Checked pairs total: 123259 [2023-09-01 06:44:07,869 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-09-01 06:44:07,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:07,872 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:07,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:07,883 INFO L130 PetriNetUnfolder]: 27/155 cut-off events. [2023-09-01 06:44:07,884 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 06:44:07,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:07,884 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:07,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:07,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1359756329, now seen corresponding path program 1 times [2023-09-01 06:44:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812045821] [2023-09-01 06:44:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:07,929 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:07,967 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:07,970 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:07,971 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:07,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:44:07,971 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:07,971 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:07,974 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:07,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:44:08,006 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 06:44:08,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 318 transitions, 696 flow [2023-09-01 06:44:08,182 INFO L130 PetriNetUnfolder]: 140/1083 cut-off events. [2023-09-01 06:44:08,182 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:44:08,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 1083 events. 140/1083 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5154 event pairs, 23 based on Foata normal form. 0/867 useless extension candidates. Maximal degree in co-relation 727. Up to 80 conditions per place. [2023-09-01 06:44:08,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 318 transitions, 696 flow [2023-09-01 06:44:08,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 318 transitions, 696 flow [2023-09-01 06:44:08,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:08,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 318 transitions, 696 flow [2023-09-01 06:44:08,215 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 318 transitions, 696 flow [2023-09-01 06:44:08,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 318 transitions, 696 flow [2023-09-01 06:44:08,394 INFO L130 PetriNetUnfolder]: 140/1083 cut-off events. [2023-09-01 06:44:08,394 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 06:44:08,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194 conditions, 1083 events. 140/1083 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5154 event pairs, 23 based on Foata normal form. 0/867 useless extension candidates. Maximal degree in co-relation 727. Up to 80 conditions per place. [2023-09-01 06:44:08,484 INFO L119 LiptonReduction]: Number of co-enabled transitions 65120 [2023-09-01 06:44:12,180 INFO L134 LiptonReduction]: Checked pairs total: 210454 [2023-09-01 06:44:12,181 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-09-01 06:44:12,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:12,189 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:12,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:12,209 INFO L130 PetriNetUnfolder]: 37/209 cut-off events. [2023-09-01 06:44:12,209 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-09-01 06:44:12,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:12,209 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:12,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:12,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:12,210 INFO L85 PathProgramCache]: Analyzing trace with hash -454581067, now seen corresponding path program 1 times [2023-09-01 06:44:12,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:12,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123903155] [2023-09-01 06:44:12,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:12,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:12,266 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:12,299 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:12,299 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:12,299 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:12,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:44:12,300 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:12,301 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:12,301 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:12,301 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:44:12,338 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 06:44:12,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 364 transitions, 806 flow [2023-09-01 06:44:12,693 INFO L130 PetriNetUnfolder]: 263/1820 cut-off events. [2023-09-01 06:44:12,694 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:44:12,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 1820 events. 263/1820 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10488 event pairs, 72 based on Foata normal form. 0/1459 useless extension candidates. Maximal degree in co-relation 1182. Up to 192 conditions per place. [2023-09-01 06:44:12,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 330 places, 364 transitions, 806 flow [2023-09-01 06:44:12,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 330 places, 364 transitions, 806 flow [2023-09-01 06:44:12,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:12,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 330 places, 364 transitions, 806 flow [2023-09-01 06:44:12,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 330 places, 364 transitions, 806 flow [2023-09-01 06:44:12,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 330 places, 364 transitions, 806 flow [2023-09-01 06:44:13,115 INFO L130 PetriNetUnfolder]: 263/1820 cut-off events. [2023-09-01 06:44:13,115 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 06:44:13,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2052 conditions, 1820 events. 263/1820 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10488 event pairs, 72 based on Foata normal form. 0/1459 useless extension candidates. Maximal degree in co-relation 1182. Up to 192 conditions per place. [2023-09-01 06:44:13,268 INFO L119 LiptonReduction]: Number of co-enabled transitions 90552 [2023-09-01 06:44:17,356 INFO L134 LiptonReduction]: Checked pairs total: 271151 [2023-09-01 06:44:17,356 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-09-01 06:44:17,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:17,358 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:17,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:17,385 INFO L130 PetriNetUnfolder]: 41/257 cut-off events. [2023-09-01 06:44:17,386 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-09-01 06:44:17,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:17,386 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:17,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:17,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:17,387 INFO L85 PathProgramCache]: Analyzing trace with hash -205443864, now seen corresponding path program 1 times [2023-09-01 06:44:17,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:17,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337347328] [2023-09-01 06:44:17,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:17,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:17,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:17,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:17,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:17,478 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:17,478 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:17,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:44:17,479 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:17,481 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:17,482 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:17,482 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:44:17,521 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 06:44:17,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 410 transitions, 918 flow [2023-09-01 06:44:18,280 INFO L130 PetriNetUnfolder]: 530/3245 cut-off events. [2023-09-01 06:44:18,281 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:44:18,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 3245 events. 530/3245 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 22599 event pairs, 201 based on Foata normal form. 0/2611 useless extension candidates. Maximal degree in co-relation 2038. Up to 448 conditions per place. [2023-09-01 06:44:18,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 371 places, 410 transitions, 918 flow [2023-09-01 06:44:18,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 371 places, 410 transitions, 918 flow [2023-09-01 06:44:18,365 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:18,365 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 371 places, 410 transitions, 918 flow [2023-09-01 06:44:18,365 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 371 places, 410 transitions, 918 flow [2023-09-01 06:44:18,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 371 places, 410 transitions, 918 flow [2023-09-01 06:44:19,177 INFO L130 PetriNetUnfolder]: 530/3245 cut-off events. [2023-09-01 06:44:19,178 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 06:44:19,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3743 conditions, 3245 events. 530/3245 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 22599 event pairs, 201 based on Foata normal form. 0/2611 useless extension candidates. Maximal degree in co-relation 2038. Up to 448 conditions per place. [2023-09-01 06:44:19,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 120120 [2023-09-01 06:44:23,604 INFO L134 LiptonReduction]: Checked pairs total: 359606 [2023-09-01 06:44:23,605 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-09-01 06:44:23,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:23,606 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:23,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:23,637 INFO L130 PetriNetUnfolder]: 61/342 cut-off events. [2023-09-01 06:44:23,637 INFO L131 PetriNetUnfolder]: For 103/103 co-relation queries the response was YES. [2023-09-01 06:44:23,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:23,638 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:23,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:23,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash -691915621, now seen corresponding path program 1 times [2023-09-01 06:44:23,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:23,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28051274] [2023-09-01 06:44:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:23,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:23,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:23,661 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:23,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:23,679 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:23,679 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:44:23,680 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:23,680 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:23,680 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:23,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:44:23,716 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 06:44:23,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 456 transitions, 1032 flow [2023-09-01 06:44:25,280 INFO L130 PetriNetUnfolder]: 1117/6078 cut-off events. [2023-09-01 06:44:25,280 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:44:25,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 6078 events. 1117/6078 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 50356 event pairs, 522 based on Foata normal form. 0/4915 useless extension candidates. Maximal degree in co-relation 3727. Up to 1024 conditions per place. [2023-09-01 06:44:25,457 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 456 transitions, 1032 flow [2023-09-01 06:44:25,499 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 456 transitions, 1032 flow [2023-09-01 06:44:25,500 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:25,500 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 456 transitions, 1032 flow [2023-09-01 06:44:25,500 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 456 transitions, 1032 flow [2023-09-01 06:44:25,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 456 transitions, 1032 flow [2023-09-01 06:44:26,859 INFO L130 PetriNetUnfolder]: 1117/6078 cut-off events. [2023-09-01 06:44:26,859 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 06:44:26,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7163 conditions, 6078 events. 1117/6078 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 50356 event pairs, 522 based on Foata normal form. 0/4915 useless extension candidates. Maximal degree in co-relation 3727. Up to 1024 conditions per place. [2023-09-01 06:44:27,193 INFO L119 LiptonReduction]: Number of co-enabled transitions 153824 [2023-09-01 06:44:31,498 INFO L134 LiptonReduction]: Checked pairs total: 471624 [2023-09-01 06:44:31,498 INFO L136 LiptonReduction]: Total number of compositions: 326 [2023-09-01 06:44:31,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:31,500 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:31,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:31,579 INFO L130 PetriNetUnfolder]: 75/422 cut-off events. [2023-09-01 06:44:31,579 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-09-01 06:44:31,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:31,580 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:31,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:31,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 388265244, now seen corresponding path program 1 times [2023-09-01 06:44:31,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:31,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105152684] [2023-09-01 06:44:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:31,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:31,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:31,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:31,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:31,624 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:31,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:44:31,624 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:31,625 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:31,625 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:31,625 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:44:31,665 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 06:44:31,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 502 transitions, 1148 flow [2023-09-01 06:44:34,650 INFO L130 PetriNetUnfolder]: 2408/11791 cut-off events. [2023-09-01 06:44:34,650 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:44:34,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14168 conditions, 11791 events. 2408/11791 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 114436 event pairs, 1291 based on Foata normal form. 0/9587 useless extension candidates. Maximal degree in co-relation 7145. Up to 2304 conditions per place. [2023-09-01 06:44:34,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 453 places, 502 transitions, 1148 flow [2023-09-01 06:44:34,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 453 places, 502 transitions, 1148 flow [2023-09-01 06:44:34,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:34,966 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 453 places, 502 transitions, 1148 flow [2023-09-01 06:44:34,966 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 453 places, 502 transitions, 1148 flow [2023-09-01 06:44:34,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 502 transitions, 1148 flow [2023-09-01 06:44:37,840 INFO L130 PetriNetUnfolder]: 2408/11791 cut-off events. [2023-09-01 06:44:37,840 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 06:44:38,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14168 conditions, 11791 events. 2408/11791 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 114436 event pairs, 1291 based on Foata normal form. 0/9587 useless extension candidates. Maximal degree in co-relation 7145. Up to 2304 conditions per place. [2023-09-01 06:44:38,619 INFO L119 LiptonReduction]: Number of co-enabled transitions 191664 [2023-09-01 06:44:43,327 INFO L134 LiptonReduction]: Checked pairs total: 591850 [2023-09-01 06:44:43,327 INFO L136 LiptonReduction]: Total number of compositions: 348 [2023-09-01 06:44:43,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:43,330 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:43,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:43,371 INFO L130 PetriNetUnfolder]: 96/526 cut-off events. [2023-09-01 06:44:43,371 INFO L131 PetriNetUnfolder]: For 223/223 co-relation queries the response was YES. [2023-09-01 06:44:43,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:43,371 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:43,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:43,371 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:43,372 INFO L85 PathProgramCache]: Analyzing trace with hash -510911176, now seen corresponding path program 1 times [2023-09-01 06:44:43,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:43,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397414796] [2023-09-01 06:44:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:43,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:43,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:43,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:43,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:43,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:43,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:44:43,423 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:43,424 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:43,424 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:43,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:44:43,462 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 06:44:43,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 548 transitions, 1266 flow [2023-09-01 06:44:49,702 INFO L130 PetriNetUnfolder]: 5235/23392 cut-off events. [2023-09-01 06:44:49,702 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:44:50,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28598 conditions, 23392 events. 5235/23392 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 256485 event pairs, 3084 based on Foata normal form. 0/19123 useless extension candidates. Maximal degree in co-relation 14148. Up to 5120 conditions per place. [2023-09-01 06:44:50,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 548 transitions, 1266 flow [2023-09-01 06:44:51,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 548 transitions, 1266 flow [2023-09-01 06:44:51,117 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:51,117 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 494 places, 548 transitions, 1266 flow [2023-09-01 06:44:51,117 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 494 places, 548 transitions, 1266 flow [2023-09-01 06:44:51,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 548 transitions, 1266 flow [2023-09-01 06:44:57,912 INFO L130 PetriNetUnfolder]: 5235/23392 cut-off events. [2023-09-01 06:44:57,912 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 06:44:58,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28598 conditions, 23392 events. 5235/23392 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 256485 event pairs, 3084 based on Foata normal form. 0/19123 useless extension candidates. Maximal degree in co-relation 14148. Up to 5120 conditions per place. [2023-09-01 06:45:00,010 INFO L119 LiptonReduction]: Number of co-enabled transitions 233640 [2023-09-01 06:45:04,954 INFO L134 LiptonReduction]: Checked pairs total: 728115 [2023-09-01 06:45:04,955 INFO L136 LiptonReduction]: Total number of compositions: 384 [2023-09-01 06:45:04,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:04,957 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:04,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:05,014 INFO L130 PetriNetUnfolder]: 126/662 cut-off events. [2023-09-01 06:45:05,014 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-09-01 06:45:05,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:05,015 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:05,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:05,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash 312295955, now seen corresponding path program 1 times [2023-09-01 06:45:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:05,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318209905] [2023-09-01 06:45:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:05,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:05,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:05,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:05,089 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:05,089 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:05,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:45:05,089 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:05,090 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:05,090 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:05,091 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:45:05,132 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 06:45:05,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 594 transitions, 1386 flow [2023-09-01 06:45:19,553 INFO L130 PetriNetUnfolder]: 11390/47025 cut-off events. [2023-09-01 06:45:19,553 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:45:20,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58389 conditions, 47025 events. 11390/47025 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 570125 event pairs, 7181 based on Foata normal form. 0/38643 useless extension candidates. Maximal degree in co-relation 28576. Up to 11264 conditions per place. [2023-09-01 06:45:20,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 535 places, 594 transitions, 1386 flow [2023-09-01 06:45:21,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 535 places, 594 transitions, 1386 flow [2023-09-01 06:45:21,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:21,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 535 places, 594 transitions, 1386 flow [2023-09-01 06:45:21,496 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 535 places, 594 transitions, 1386 flow [2023-09-01 06:45:21,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 535 places, 594 transitions, 1386 flow [2023-09-01 06:45:35,898 INFO L130 PetriNetUnfolder]: 11390/47025 cut-off events. [2023-09-01 06:45:35,898 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 06:45:37,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58389 conditions, 47025 events. 11390/47025 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 570125 event pairs, 7181 based on Foata normal form. 0/38643 useless extension candidates. Maximal degree in co-relation 28576. Up to 11264 conditions per place. [2023-09-01 06:45:40,565 INFO L119 LiptonReduction]: Number of co-enabled transitions 279752 [2023-09-01 06:45:45,783 INFO L134 LiptonReduction]: Checked pairs total: 877604 [2023-09-01 06:45:45,783 INFO L136 LiptonReduction]: Total number of compositions: 416 [2023-09-01 06:45:45,784 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:45,784 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:45,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:45,924 INFO L130 PetriNetUnfolder]: 171/844 cut-off events. [2023-09-01 06:45:45,925 INFO L131 PetriNetUnfolder]: For 446/446 co-relation queries the response was YES. [2023-09-01 06:45:45,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:45,925 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:45,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:45,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1744251193, now seen corresponding path program 1 times [2023-09-01 06:45:45,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:45,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381528121] [2023-09-01 06:45:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:45,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:45,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:45,986 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:45,986 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:45,986 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:45,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:45:45,987 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:45,987 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:45,988 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:45,988 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:45:46,034 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 06:45:46,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 576 places, 640 transitions, 1508 flow [2023-09-01 06:46:20,754 INFO L130 PetriNetUnfolder]: 24713/95234 cut-off events. [2023-09-01 06:46:20,755 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:46:27,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119925 conditions, 95234 events. 24713/95234 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 1273924 event pairs, 16398 based on Foata normal form. 0/78643 useless extension candidates. Maximal degree in co-relation 58365. Up to 24576 conditions per place. [2023-09-01 06:46:27,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 576 places, 640 transitions, 1508 flow [2023-09-01 06:46:29,185 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 576 places, 640 transitions, 1508 flow [2023-09-01 06:46:29,186 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:29,186 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 576 places, 640 transitions, 1508 flow [2023-09-01 06:46:29,186 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 576 places, 640 transitions, 1508 flow [2023-09-01 06:46:29,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 576 places, 640 transitions, 1508 flow [2023-09-01 06:47:00,538 INFO L130 PetriNetUnfolder]: 24713/95234 cut-off events. [2023-09-01 06:47:00,538 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 06:47:06,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119925 conditions, 95234 events. 24713/95234 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1327. Compared 1273924 event pairs, 16398 based on Foata normal form. 0/78643 useless extension candidates. Maximal degree in co-relation 58365. Up to 24576 conditions per place. [2023-09-01 06:47:15,258 INFO L119 LiptonReduction]: Number of co-enabled transitions 330000 [2023-09-01 06:47:20,763 INFO L134 LiptonReduction]: Checked pairs total: 1050138 [2023-09-01 06:47:20,763 INFO L136 LiptonReduction]: Total number of compositions: 434 [2023-09-01 06:47:20,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:20,765 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;@784718f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:20,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:20,875 INFO L130 PetriNetUnfolder]: 240/1096 cut-off events. [2023-09-01 06:47:20,875 INFO L131 PetriNetUnfolder]: For 624/624 co-relation queries the response was YES. [2023-09-01 06:47:20,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:20,875 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:47:20,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:20,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1612095553, now seen corresponding path program 1 times [2023-09-01 06:47:20,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:20,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910863760] [2023-09-01 06:47:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:20,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:20,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:20,925 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:20,925 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:20,926 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:20,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:47:20,926 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:20,926 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:20,927 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:20,927 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:47:20,973 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 06:47:20,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 617 places, 686 transitions, 1632 flow [2023-09-01 06:48:33,274 INFO L130 PetriNetUnfolder]: 53396/193619 cut-off events. [2023-09-01 06:48:33,275 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 06:48:53,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246998 conditions, 193619 events. 53396/193619 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2624. Compared 2800038 event pairs, 36879 based on Foata normal form. 0/160627 useless extension candidates. Maximal degree in co-relation 119900. Up to 53248 conditions per place. [2023-09-01 06:48:53,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 617 places, 686 transitions, 1632 flow [2023-09-01 06:49:00,062 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 617 places, 686 transitions, 1632 flow [2023-09-01 06:49:00,062 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:49:00,063 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 617 places, 686 transitions, 1632 flow [2023-09-01 06:49:00,063 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 617 places, 686 transitions, 1632 flow [2023-09-01 06:49:00,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 617 places, 686 transitions, 1632 flow