./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --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 00:52:08,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:52:08,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:52:08,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:52:08,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:52:08,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:52:08,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:52:08,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:52:08,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:52:08,108 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:52:08,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:52:08,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:52:08,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:52:08,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:52:08,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:52:08,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:52:08,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:52:08,122 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:52:08,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:52:08,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:52:08,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:52:08,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:52:08,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:52:08,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:52:08,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:52:08,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:52:08,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:52:08,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:52:08,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:52:08,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:52:08,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:52:08,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:52:08,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:52:08,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:52:08,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:52:08,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:52:08,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:52:08,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:52:08,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:52:08,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:52:08,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:52:08,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:52:08,186 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:52:08,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:52:08,187 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:52:08,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:52:08,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:52:08,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:52:08,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:52:08,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:52:08,189 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:52:08,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:52:08,190 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:52:08,190 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:52:08,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:52:08,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:52:08,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:52:08,191 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:52:08,191 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:52:08,191 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:52:08,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:52:08,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:52:08,192 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:52:08,192 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:52:08,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:52:08,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:52:08,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:52:08,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:52:08,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:52:08,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:52:08,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:52:08,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:52:08,194 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:52:08,194 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:52:08,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:52:08,194 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:52:08,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:52:08,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:52:08,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:52:08,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:52:08,532 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:52:08,532 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:52:08,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-09-01 00:52:09,813 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:52:10,097 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:52:10,097 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-09-01 00:52:10,109 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91b4117c/ebd5ec3279e94f279091096edefa53da/FLAG9251010c1 [2023-09-01 00:52:10,126 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f91b4117c/ebd5ec3279e94f279091096edefa53da [2023-09-01 00:52:10,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:52:10,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:52:10,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:52:10,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:52:10,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:52:10,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2550f56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10, skipping insertion in model container [2023-09-01 00:52:10,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:52:10,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:52:10,624 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_78-equ_racing.i[47038,47051] [2023-09-01 00:52:10,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:52:10,690 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:52:10,728 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_78-equ_racing.i[47038,47051] [2023-09-01 00:52:10,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:52:10,833 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:52:10,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10 WrapperNode [2023-09-01 00:52:10,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:52:10,835 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:52:10,835 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:52:10,835 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:52:10,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,907 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 204 [2023-09-01 00:52:10,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:52:10,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:52:10,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:52:10,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:52:10,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,942 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,961 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:52:10,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:52:10,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:52:10,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:52:10,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (1/1) ... [2023-09-01 00:52:10,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:52:10,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:52:11,006 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 00:52:11,026 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 00:52:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:52:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:52:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:52:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:52:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:52:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:52:11,051 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:52:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:52:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:52:11,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:52:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:52:11,054 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 00:52:11,213 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:52:11,221 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:52:11,597 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:52:11,607 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:52:11,612 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-09-01 00:52:11,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:52:11 BoogieIcfgContainer [2023-09-01 00:52:11,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:52:11,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:52:11,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:52:11,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:52:11,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:52:10" (1/3) ... [2023-09-01 00:52:11,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718d131c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:52:11, skipping insertion in model container [2023-09-01 00:52:11,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:52:10" (2/3) ... [2023-09-01 00:52:11,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@718d131c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:52:11, skipping insertion in model container [2023-09-01 00:52:11,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:52:11" (3/3) ... [2023-09-01 00:52:11,625 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2023-09-01 00:52:11,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:52:11,641 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2023-09-01 00:52:11,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:52:11,718 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:52:11,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 229 transitions, 466 flow [2023-09-01 00:52:11,835 INFO L130 PetriNetUnfolder]: 43/316 cut-off events. [2023-09-01 00:52:11,835 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:52:11,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 316 events. 43/316 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1168 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 159. Up to 8 conditions per place. [2023-09-01 00:52:11,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 229 transitions, 466 flow [2023-09-01 00:52:11,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 222 transitions, 449 flow [2023-09-01 00:52:11,852 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:52:11,860 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 222 transitions, 449 flow [2023-09-01 00:52:11,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 222 transitions, 449 flow [2023-09-01 00:52:11,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 222 transitions, 449 flow [2023-09-01 00:52:11,924 INFO L130 PetriNetUnfolder]: 41/309 cut-off events. [2023-09-01 00:52:11,925 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:52:11,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 309 events. 41/309 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1167 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 159. Up to 8 conditions per place. [2023-09-01 00:52:11,932 INFO L119 LiptonReduction]: Number of co-enabled transitions 12462 [2023-09-01 00:52:18,172 INFO L134 LiptonReduction]: Checked pairs total: 29769 [2023-09-01 00:52:18,172 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-09-01 00:52:18,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:52:18,190 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:52:18,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:52:18,198 INFO L130 PetriNetUnfolder]: 12/62 cut-off events. [2023-09-01 00:52:18,198 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:52:18,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:52:18,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:52:18,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:52:18,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:52:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash 240707275, now seen corresponding path program 1 times [2023-09-01 00:52:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:52:18,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315409771] [2023-09-01 00:52:18,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:52:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:52:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:18,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:52:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:18,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:52:18,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:52:18,389 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:52:18,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:52:18,392 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:52:18,398 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:52:18,399 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:52:18,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:52:18,439 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:52:18,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 298 transitions, 614 flow [2023-09-01 00:52:18,540 INFO L130 PetriNetUnfolder]: 72/501 cut-off events. [2023-09-01 00:52:18,540 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:52:18,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 515 conditions, 501 events. 72/501 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2217 event pairs, 0 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 318. Up to 12 conditions per place. [2023-09-01 00:52:18,545 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 298 transitions, 614 flow [2023-09-01 00:52:18,549 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 296 transitions, 610 flow [2023-09-01 00:52:18,549 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:52:18,549 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 296 transitions, 610 flow [2023-09-01 00:52:18,550 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 296 transitions, 610 flow [2023-09-01 00:52:18,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 296 transitions, 610 flow [2023-09-01 00:52:18,613 INFO L130 PetriNetUnfolder]: 71/499 cut-off events. [2023-09-01 00:52:18,613 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:52:18,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 499 events. 71/499 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2231 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 316. Up to 12 conditions per place. [2023-09-01 00:52:18,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 35376 [2023-09-01 00:52:25,312 INFO L134 LiptonReduction]: Checked pairs total: 90168 [2023-09-01 00:52:25,313 INFO L136 LiptonReduction]: Total number of compositions: 269 [2023-09-01 00:52:25,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:52:25,316 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:52:25,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:52:25,328 INFO L130 PetriNetUnfolder]: 34/148 cut-off events. [2023-09-01 00:52:25,328 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:52:25,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:52:25,328 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:52:25,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:52:25,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:52:25,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1167489513, now seen corresponding path program 1 times [2023-09-01 00:52:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:52:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282817244] [2023-09-01 00:52:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:52:25,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:52:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:25,379 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:52:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:25,475 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:52:25,476 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:52:25,476 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:52:25,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:52:25,477 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:52:25,477 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:52:25,477 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:52:25,478 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:52:25,505 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:52:25,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 367 transitions, 764 flow [2023-09-01 00:52:25,600 INFO L130 PetriNetUnfolder]: 106/727 cut-off events. [2023-09-01 00:52:25,601 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:52:25,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 755 conditions, 727 events. 106/727 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3476 event pairs, 1 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 509. Up to 16 conditions per place. [2023-09-01 00:52:25,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 367 transitions, 764 flow [2023-09-01 00:52:25,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 365 transitions, 760 flow [2023-09-01 00:52:25,620 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:52:25,621 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 365 transitions, 760 flow [2023-09-01 00:52:25,621 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 365 transitions, 760 flow [2023-09-01 00:52:25,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 365 transitions, 760 flow [2023-09-01 00:52:25,724 INFO L130 PetriNetUnfolder]: 105/725 cut-off events. [2023-09-01 00:52:25,725 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:52:25,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 725 events. 105/725 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3521 event pairs, 1 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 507. Up to 16 conditions per place. [2023-09-01 00:52:25,756 INFO L119 LiptonReduction]: Number of co-enabled transitions 67134 [2023-09-01 00:52:32,698 INFO L134 LiptonReduction]: Checked pairs total: 179819 [2023-09-01 00:52:32,698 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-09-01 00:52:32,700 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:52:32,700 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:52:32,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:52:32,717 INFO L130 PetriNetUnfolder]: 58/240 cut-off events. [2023-09-01 00:52:32,718 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:52:32,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:52:32,718 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:52:32,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:52:32,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:52:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1409749834, now seen corresponding path program 1 times [2023-09-01 00:52:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:52:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714394105] [2023-09-01 00:52:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:52:32,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:52:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:32,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:52:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:32,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:52:32,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:52:32,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:52:32,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:52:32,787 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:52:32,787 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:52:32,787 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:52:32,788 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:52:32,817 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:52:32,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 436 transitions, 916 flow [2023-09-01 00:52:33,010 INFO L130 PetriNetUnfolder]: 152/1037 cut-off events. [2023-09-01 00:52:33,011 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:52:33,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092 conditions, 1037 events. 152/1037 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5366 event pairs, 6 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 747. Up to 32 conditions per place. [2023-09-01 00:52:33,026 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 436 transitions, 916 flow [2023-09-01 00:52:33,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 434 transitions, 912 flow [2023-09-01 00:52:33,039 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:52:33,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 434 transitions, 912 flow [2023-09-01 00:52:33,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 434 transitions, 912 flow [2023-09-01 00:52:33,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 434 transitions, 912 flow [2023-09-01 00:52:33,224 INFO L130 PetriNetUnfolder]: 151/1035 cut-off events. [2023-09-01 00:52:33,225 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:52:33,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1090 conditions, 1035 events. 151/1035 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5401 event pairs, 6 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 745. Up to 32 conditions per place. [2023-09-01 00:52:33,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 108272 [2023-09-01 00:52:42,034 INFO L134 LiptonReduction]: Checked pairs total: 327470 [2023-09-01 00:52:42,035 INFO L136 LiptonReduction]: Total number of compositions: 387 [2023-09-01 00:52:42,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:52:42,037 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:52:42,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:52:42,072 INFO L130 PetriNetUnfolder]: 91/355 cut-off events. [2023-09-01 00:52:42,073 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:52:42,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:52:42,073 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:52:42,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:52:42,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:52:42,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1006503178, now seen corresponding path program 1 times [2023-09-01 00:52:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:52:42,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600421197] [2023-09-01 00:52:42,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:52:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:52:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:42,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:52:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:42,187 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:52:42,187 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:52:42,187 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:52:42,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:52:42,188 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:52:42,188 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:52:42,188 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:52:42,188 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:52:42,230 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:52:42,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 505 transitions, 1070 flow [2023-09-01 00:52:42,528 INFO L130 PetriNetUnfolder]: 226/1519 cut-off events. [2023-09-01 00:52:42,528 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:52:42,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1630 conditions, 1519 events. 226/1519 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8700 event pairs, 23 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 1082. Up to 80 conditions per place. [2023-09-01 00:52:42,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 505 transitions, 1070 flow [2023-09-01 00:52:42,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 434 places, 503 transitions, 1066 flow [2023-09-01 00:52:42,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:52:42,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 434 places, 503 transitions, 1066 flow [2023-09-01 00:52:42,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 434 places, 503 transitions, 1066 flow [2023-09-01 00:52:42,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 503 transitions, 1066 flow [2023-09-01 00:52:42,849 INFO L130 PetriNetUnfolder]: 225/1517 cut-off events. [2023-09-01 00:52:42,850 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:52:42,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 1517 events. 225/1517 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8701 event pairs, 23 based on Foata normal form. 0/1079 useless extension candidates. Maximal degree in co-relation 1080. Up to 80 conditions per place. [2023-09-01 00:52:42,953 INFO L119 LiptonReduction]: Number of co-enabled transitions 158790 [2023-09-01 00:52:50,440 INFO L134 LiptonReduction]: Checked pairs total: 443253 [2023-09-01 00:52:50,440 INFO L136 LiptonReduction]: Total number of compositions: 425 [2023-09-01 00:52:50,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:52:50,442 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:52:50,443 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:52:50,502 INFO L130 PetriNetUnfolder]: 115/462 cut-off events. [2023-09-01 00:52:50,502 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:52:50,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:52:50,503 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:52:50,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:52:50,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:52:50,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2086275081, now seen corresponding path program 1 times [2023-09-01 00:52:50,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:52:50,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505806139] [2023-09-01 00:52:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:52:50,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:52:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:50,553 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:52:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:52:50,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:52:50,597 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:52:50,597 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:52:50,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:52:50,598 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:52:50,598 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:52:50,598 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:52:50,599 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:52:50,631 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:52:50,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 493 places, 574 transitions, 1226 flow [2023-09-01 00:52:51,158 INFO L130 PetriNetUnfolder]: 364/2353 cut-off events. [2023-09-01 00:52:51,158 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:52:51,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2585 conditions, 2353 events. 364/2353 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 15246 event pairs, 72 based on Foata normal form. 0/1704 useless extension candidates. Maximal degree in co-relation 1618. Up to 192 conditions per place. [2023-09-01 00:52:51,221 INFO L82 GeneralOperation]: Start removeDead. Operand has 493 places, 574 transitions, 1226 flow [2023-09-01 00:52:51,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 492 places, 572 transitions, 1222 flow [2023-09-01 00:52:51,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:52:51,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 492 places, 572 transitions, 1222 flow [2023-09-01 00:52:51,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 492 places, 572 transitions, 1222 flow [2023-09-01 00:52:51,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 572 transitions, 1222 flow [2023-09-01 00:52:51,781 INFO L130 PetriNetUnfolder]: 363/2351 cut-off events. [2023-09-01 00:52:51,782 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:52:51,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 2351 events. 363/2351 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 15189 event pairs, 72 based on Foata normal form. 0/1703 useless extension candidates. Maximal degree in co-relation 1616. Up to 192 conditions per place. [2023-09-01 00:52:51,949 INFO L119 LiptonReduction]: Number of co-enabled transitions 218688 [2023-09-01 00:53:00,357 INFO L134 LiptonReduction]: Checked pairs total: 685699 [2023-09-01 00:53:00,358 INFO L136 LiptonReduction]: Total number of compositions: 480 [2023-09-01 00:53:00,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:00,360 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:00,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:53:00,413 INFO L130 PetriNetUnfolder]: 139/581 cut-off events. [2023-09-01 00:53:00,413 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:53:00,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:00,414 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:53:00,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:00,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:00,414 INFO L85 PathProgramCache]: Analyzing trace with hash 170417951, now seen corresponding path program 1 times [2023-09-01 00:53:00,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:00,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391758024] [2023-09-01 00:53:00,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:00,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:00,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:00,477 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:00,485 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:00,485 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:53:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:53:00,486 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:00,486 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:53:00,486 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:00,486 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:53:00,528 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:53:00,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 551 places, 643 transitions, 1384 flow [2023-09-01 00:53:01,396 INFO L130 PetriNetUnfolder]: 646/3907 cut-off events. [2023-09-01 00:53:01,396 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:53:01,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4405 conditions, 3907 events. 646/3907 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 29413 event pairs, 201 based on Foata normal form. 0/2888 useless extension candidates. Maximal degree in co-relation 2571. Up to 448 conditions per place. [2023-09-01 00:53:01,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 551 places, 643 transitions, 1384 flow [2023-09-01 00:53:01,624 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 550 places, 641 transitions, 1380 flow [2023-09-01 00:53:01,624 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:53:01,624 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 550 places, 641 transitions, 1380 flow [2023-09-01 00:53:01,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 550 places, 641 transitions, 1380 flow [2023-09-01 00:53:01,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 550 places, 641 transitions, 1380 flow [2023-09-01 00:53:02,498 INFO L130 PetriNetUnfolder]: 645/3905 cut-off events. [2023-09-01 00:53:02,499 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:53:02,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 3905 events. 645/3905 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 29367 event pairs, 201 based on Foata normal form. 0/2887 useless extension candidates. Maximal degree in co-relation 2569. Up to 448 conditions per place. [2023-09-01 00:53:02,798 INFO L119 LiptonReduction]: Number of co-enabled transitions 287966 [2023-09-01 00:53:11,484 INFO L134 LiptonReduction]: Checked pairs total: 827424 [2023-09-01 00:53:11,484 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-09-01 00:53:11,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:11,486 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:11,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:53:11,621 INFO L130 PetriNetUnfolder]: 175/732 cut-off events. [2023-09-01 00:53:11,621 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:53:11,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:11,622 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:53:11,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:11,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1195563124, now seen corresponding path program 1 times [2023-09-01 00:53:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:11,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286310152] [2023-09-01 00:53:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:11,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:11,672 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:11,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:11,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:11,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:53:11,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:53:11,701 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:11,701 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:53:11,701 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:11,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:53:11,757 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:53:11,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 609 places, 712 transitions, 1544 flow [2023-09-01 00:53:13,663 INFO L130 PetriNetUnfolder]: 1248/6933 cut-off events. [2023-09-01 00:53:13,663 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:53:13,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8018 conditions, 6933 events. 1248/6933 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 60711 event pairs, 522 based on Foata normal form. 0/5224 useless extension candidates. Maximal degree in co-relation 4389. Up to 1024 conditions per place. [2023-09-01 00:53:13,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 609 places, 712 transitions, 1544 flow [2023-09-01 00:53:13,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 608 places, 710 transitions, 1540 flow [2023-09-01 00:53:13,884 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:53:13,884 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 608 places, 710 transitions, 1540 flow [2023-09-01 00:53:13,884 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 608 places, 710 transitions, 1540 flow [2023-09-01 00:53:13,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 710 transitions, 1540 flow [2023-09-01 00:53:15,805 INFO L130 PetriNetUnfolder]: 1247/6931 cut-off events. [2023-09-01 00:53:15,805 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:53:15,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8016 conditions, 6931 events. 1247/6931 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 60781 event pairs, 522 based on Foata normal form. 0/5223 useless extension candidates. Maximal degree in co-relation 4387. Up to 1024 conditions per place. [2023-09-01 00:53:16,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 366624 [2023-09-01 00:53:25,872 INFO L134 LiptonReduction]: Checked pairs total: 1167626 [2023-09-01 00:53:25,873 INFO L136 LiptonReduction]: Total number of compositions: 581 [2023-09-01 00:53:25,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:25,875 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:25,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:53:26,001 INFO L130 PetriNetUnfolder]: 216/914 cut-off events. [2023-09-01 00:53:26,002 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:53:26,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:26,002 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:53:26,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:26,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:26,003 INFO L85 PathProgramCache]: Analyzing trace with hash 2075953884, now seen corresponding path program 1 times [2023-09-01 00:53:26,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:26,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186320822] [2023-09-01 00:53:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:26,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:26,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:26,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:26,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:26,084 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:26,084 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:53:26,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:53:26,085 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:26,085 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:53:26,085 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:26,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:53:26,133 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:53:26,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 667 places, 781 transitions, 1706 flow [2023-09-01 00:53:29,866 INFO L130 PetriNetUnfolder]: 2554/12967 cut-off events. [2023-09-01 00:53:29,866 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:53:30,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15344 conditions, 12967 events. 2554/12967 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 130774 event pairs, 1291 based on Foata normal form. 0/9928 useless extension candidates. Maximal degree in co-relation 8000. Up to 2304 conditions per place. [2023-09-01 00:53:30,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 667 places, 781 transitions, 1706 flow [2023-09-01 00:53:30,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 666 places, 779 transitions, 1702 flow [2023-09-01 00:53:30,503 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:53:30,504 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 666 places, 779 transitions, 1702 flow [2023-09-01 00:53:30,504 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 666 places, 779 transitions, 1702 flow [2023-09-01 00:53:30,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 666 places, 779 transitions, 1702 flow [2023-09-01 00:53:34,321 INFO L130 PetriNetUnfolder]: 2553/12965 cut-off events. [2023-09-01 00:53:34,321 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:53:34,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15342 conditions, 12965 events. 2553/12965 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 130893 event pairs, 1291 based on Foata normal form. 0/9927 useless extension candidates. Maximal degree in co-relation 7998. Up to 2304 conditions per place. [2023-09-01 00:53:35,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 454662 [2023-09-01 00:53:45,426 INFO L134 LiptonReduction]: Checked pairs total: 1466457 [2023-09-01 00:53:45,427 INFO L136 LiptonReduction]: Total number of compositions: 648 [2023-09-01 00:53:45,428 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:53:45,429 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:53:45,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:53:45,544 INFO L130 PetriNetUnfolder]: 286/1171 cut-off events. [2023-09-01 00:53:45,544 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:53:45,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:53:45,544 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:53:45,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:53:45,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:53:45,545 INFO L85 PathProgramCache]: Analyzing trace with hash 198394060, now seen corresponding path program 1 times [2023-09-01 00:53:45,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:53:45,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017306698] [2023-09-01 00:53:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:53:45,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:53:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:45,572 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:53:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:53:45,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:53:45,599 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:53:45,600 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:53:45,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:53:45,600 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:53:45,600 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:53:45,601 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:53:45,601 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:53:45,648 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:53:45,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 725 places, 850 transitions, 1870 flow [2023-09-01 00:53:53,999 INFO L130 PetriNetUnfolder]: 5396/25145 cut-off events. [2023-09-01 00:53:53,999 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:53:54,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30351 conditions, 25145 events. 5396/25145 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 288119 event pairs, 3084 based on Foata normal form. 0/19496 useless extension candidates. Maximal degree in co-relation 15324. Up to 5120 conditions per place. [2023-09-01 00:53:54,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 725 places, 850 transitions, 1870 flow [2023-09-01 00:53:55,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 724 places, 848 transitions, 1866 flow [2023-09-01 00:53:55,478 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:53:55,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 724 places, 848 transitions, 1866 flow [2023-09-01 00:53:55,478 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 724 places, 848 transitions, 1866 flow [2023-09-01 00:53:55,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 724 places, 848 transitions, 1866 flow [2023-09-01 00:54:03,830 INFO L130 PetriNetUnfolder]: 5395/25143 cut-off events. [2023-09-01 00:54:03,830 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:54:04,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30349 conditions, 25143 events. 5395/25143 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 288152 event pairs, 3084 based on Foata normal form. 0/19495 useless extension candidates. Maximal degree in co-relation 15322. Up to 5120 conditions per place. [2023-09-01 00:54:06,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 552080 [2023-09-01 00:54:18,972 INFO L134 LiptonReduction]: Checked pairs total: 1801227 [2023-09-01 00:54:18,972 INFO L136 LiptonReduction]: Total number of compositions: 697 [2023-09-01 00:54:18,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:54:18,974 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:54:18,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:54:19,182 INFO L130 PetriNetUnfolder]: 362/1504 cut-off events. [2023-09-01 00:54:19,183 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:54:19,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:54:19,183 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:54:19,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:54:19,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:54:19,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1433780025, now seen corresponding path program 1 times [2023-09-01 00:54:19,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:54:19,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190281514] [2023-09-01 00:54:19,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:54:19,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:54:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:54:19,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:54:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:54:19,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:54:19,251 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:54:19,251 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:54:19,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:54:19,252 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:54:19,252 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:54:19,252 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:54:19,252 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:54:19,307 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:54:19,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 783 places, 919 transitions, 2036 flow [2023-09-01 00:54:37,372 INFO L130 PetriNetUnfolder]: 11566/49867 cut-off events. [2023-09-01 00:54:37,372 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:54:39,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61231 conditions, 49867 events. 11566/49867 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 635885 event pairs, 7181 based on Foata normal form. 0/39048 useless extension candidates. Maximal degree in co-relation 30329. Up to 11264 conditions per place. [2023-09-01 00:54:39,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 783 places, 919 transitions, 2036 flow [2023-09-01 00:54:41,141 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 782 places, 917 transitions, 2032 flow [2023-09-01 00:54:41,141 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:54:41,141 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 782 places, 917 transitions, 2032 flow [2023-09-01 00:54:41,142 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 782 places, 917 transitions, 2032 flow [2023-09-01 00:54:41,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 782 places, 917 transitions, 2032 flow [2023-09-01 00:55:01,248 INFO L130 PetriNetUnfolder]: 11565/49865 cut-off events. [2023-09-01 00:55:01,248 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:55:04,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61229 conditions, 49865 events. 11565/49865 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 636044 event pairs, 7181 based on Foata normal form. 0/39047 useless extension candidates. Maximal degree in co-relation 30327. Up to 11264 conditions per place. [2023-09-01 00:55:10,300 INFO L119 LiptonReduction]: Number of co-enabled transitions 658878 [2023-09-01 00:55:21,694 INFO L134 LiptonReduction]: Checked pairs total: 1953593 [2023-09-01 00:55:21,695 INFO L136 LiptonReduction]: Total number of compositions: 737 [2023-09-01 00:55:21,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:55:21,697 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:55:21,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:55:21,938 INFO L130 PetriNetUnfolder]: 507/2013 cut-off events. [2023-09-01 00:55:21,938 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:55:21,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:55:21,938 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:55:21,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:55:21,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:55:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1065144178, now seen corresponding path program 1 times [2023-09-01 00:55:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:55:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417943720] [2023-09-01 00:55:21,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:55:21,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:55:21,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:55:22,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:55:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:55:22,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:55:22,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:55:22,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:55:22,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:55:22,047 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:55:22,048 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:55:22,049 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:55:22,049 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:55:22,101 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:55:22,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 841 places, 988 transitions, 2204 flow [2023-09-01 00:56:02,380 INFO L130 PetriNetUnfolder]: 24904/100189 cut-off events. [2023-09-01 00:56:02,380 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:56:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124880 conditions, 100189 events. 24904/100189 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1406266 event pairs, 16398 based on Foata normal form. 0/79080 useless extension candidates. Maximal degree in co-relation 61207. Up to 24576 conditions per place. [2023-09-01 00:56:13,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 841 places, 988 transitions, 2204 flow [2023-09-01 00:56:17,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 840 places, 986 transitions, 2200 flow [2023-09-01 00:56:17,262 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:56:17,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 840 places, 986 transitions, 2200 flow [2023-09-01 00:56:17,263 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 840 places, 986 transitions, 2200 flow [2023-09-01 00:56:17,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 840 places, 986 transitions, 2200 flow [2023-09-01 00:56:58,137 INFO L130 PetriNetUnfolder]: 24903/100187 cut-off events. [2023-09-01 00:56:58,138 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:57:09,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124878 conditions, 100187 events. 24903/100187 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1406244 event pairs, 16398 based on Foata normal form. 0/79079 useless extension candidates. Maximal degree in co-relation 61205. Up to 24576 conditions per place. [2023-09-01 00:57:29,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 775056 [2023-09-01 00:57:43,548 INFO L134 LiptonReduction]: Checked pairs total: 2747704 [2023-09-01 00:57:43,548 INFO L136 LiptonReduction]: Total number of compositions: 800 [2023-09-01 00:57:43,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:57:43,550 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@29e9570, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:57:43,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:57:43,910 INFO L130 PetriNetUnfolder]: 743/2772 cut-off events. [2023-09-01 00:57:43,910 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:57:43,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:57:43,910 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 00:57:43,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:57:43,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:57:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash -581492063, now seen corresponding path program 1 times [2023-09-01 00:57:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:57:43,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44570064] [2023-09-01 00:57:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:57:43,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:57:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:57:43,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:57:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:57:43,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:57:43,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:57:43,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:57:43,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:57:43,991 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:57:43,994 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:57:43,994 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:57:43,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:57:44,054 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:57:44,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 899 places, 1057 transitions, 2374 flow