./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:43:40,080 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:43:40,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:43:40,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:43:40,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:43:40,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:43:40,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:43:40,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:43:40,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:43:40,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:43:40,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:43:40,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:43:40,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:43:40,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:43:40,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:43:40,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:43:40,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:43:40,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:43:40,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:43:40,172 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:43:40,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:43:40,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:43:40,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:43:40,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:43:40,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:43:40,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:43:40,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:43:40,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:43:40,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:43:40,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:43:40,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:43:40,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:43:40,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:43:40,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:43:40,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:43:40,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:43:40,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:43:40,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:43:40,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:43:40,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:43:40,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:43:40,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:43:40,220 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:43:40,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:43:40,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:43:40,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:43:40,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:43:40,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:43:40,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:43:40,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:43:40,223 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:43:40,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:43:40,224 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:43:40,224 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:43:40,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:43:40,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:43:40,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:43:40,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:43:40,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:43:40,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:43:40,225 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:43:40,225 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:43:40,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:43:40,225 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:43:40,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:43:40,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:43:40,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:43:40,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:43:40,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:43:40,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:43:40,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:43:40,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:43:40,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:43:40,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:43:40,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:43:40,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:43:40,227 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:43:40,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:43:40,228 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:43:40,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b88fee59ad03447f68c116aa52c40e006cc633d8116aa4d446048afd18fa64f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:43:40,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:43:40,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:43:40,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:43:40,581 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:43:40,582 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:43:40,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-29 02:43:41,655 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:43:41,872 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:43:41,872 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_09-ptrmunge_racing.i [2023-08-29 02:43:41,885 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e2c9666/f0d2e25e282844a19b225d4fff666fcd/FLAG1535c0839 [2023-08-29 02:43:41,896 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35e2c9666/f0d2e25e282844a19b225d4fff666fcd [2023-08-29 02:43:41,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:43:41,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:43:41,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:43:41,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:43:41,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:43:41,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:43:41" (1/1) ... [2023-08-29 02:43:41,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b8fd62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:41, skipping insertion in model container [2023-08-29 02:43:41,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:43:41" (1/1) ... [2023-08-29 02:43:41,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:43:41,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:43:42,109 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_09-ptrmunge_racing.i[30176,30189] [2023-08-29 02:43:42,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:43:42,151 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:43:42,182 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_09-ptrmunge_racing.i[30176,30189] [2023-08-29 02:43:42,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:43:42,223 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:43:42,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42 WrapperNode [2023-08-29 02:43:42,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:43:42,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:43:42,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:43:42,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:43:42,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,286 INFO L138 Inliner]: procedures = 172, calls = 50, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 286 [2023-08-29 02:43:42,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:43:42,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:43:42,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:43:42,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:43:42,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,343 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:43:42,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:43:42,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:43:42,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:43:42,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (1/1) ... [2023-08-29 02:43:42,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:43:42,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:43:42,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 02:43:42,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 02:43:42,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:43:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 02:43:42,467 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 02:43:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:43:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:43:42,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:43:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:43:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 02:43:42,468 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 02:43:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:43:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:43:42,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:43:42,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:43:42,470 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 02:43:42,611 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:43:42,612 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:43:42,988 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:43:42,994 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:43:42,995 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-29 02:43:42,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:43:42 BoogieIcfgContainer [2023-08-29 02:43:42,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:43:42,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:43:42,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:43:43,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:43:43,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:43:41" (1/3) ... [2023-08-29 02:43:43,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4943c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:43:43, skipping insertion in model container [2023-08-29 02:43:43,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:42" (2/3) ... [2023-08-29 02:43:43,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4943c11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:43:43, skipping insertion in model container [2023-08-29 02:43:43,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:43:42" (3/3) ... [2023-08-29 02:43:43,002 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_09-ptrmunge_racing.i [2023-08-29 02:43:43,006 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:43:43,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:43:43,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 02:43:43,012 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:43:43,104 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 02:43:43,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:43,291 INFO L130 PetriNetUnfolder]: 58/527 cut-off events. [2023-08-29 02:43:43,292 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:43:43,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 527 events. 58/527 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2659 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:43:43,305 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:43,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:43,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:43:43,349 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:43,351 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:43,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:43,429 INFO L130 PetriNetUnfolder]: 58/527 cut-off events. [2023-08-29 02:43:43,429 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:43:43,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 527 events. 58/527 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2659 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:43:43,451 INFO L119 LiptonReduction]: Number of co-enabled transitions 39668 [2023-08-29 02:43:47,225 INFO L134 LiptonReduction]: Checked pairs total: 156555 [2023-08-29 02:43:47,225 INFO L136 LiptonReduction]: Total number of compositions: 167 [2023-08-29 02:43:47,235 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:43:47,241 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7235c1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:43:47,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 02:43:47,248 INFO L130 PetriNetUnfolder]: 9/84 cut-off events. [2023-08-29 02:43:47,248 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:43:47,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:47,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:47,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:43:47,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1710706118, now seen corresponding path program 1 times [2023-08-29 02:43:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:47,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127896639] [2023-08-29 02:43:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:47,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:43:47,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:47,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127896639] [2023-08-29 02:43:47,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127896639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:43:47,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:43:47,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:43:47,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680409929] [2023-08-29 02:43:47,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:43:47,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:43:47,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:43:47,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:43:47,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 460 [2023-08-29 02:43:47,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 150 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:47,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:47,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 460 [2023-08-29 02:43:47,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:43:48,562 INFO L130 PetriNetUnfolder]: 5105/12988 cut-off events. [2023-08-29 02:43:48,562 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2023-08-29 02:43:48,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21038 conditions, 12988 events. 5105/12988 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 124545 event pairs, 2261 based on Foata normal form. 1221/12387 useless extension candidates. Maximal degree in co-relation 20166. Up to 7877 conditions per place. [2023-08-29 02:43:48,623 INFO L137 encePairwiseOnDemand]: 436/460 looper letters, 69 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-29 02:43:48,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 147 transitions, 458 flow [2023-08-29 02:43:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:43:48,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:43:48,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 869 transitions. [2023-08-29 02:43:48,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6297101449275362 [2023-08-29 02:43:48,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 869 transitions. [2023-08-29 02:43:48,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 869 transitions. [2023-08-29 02:43:48,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:43:48,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 869 transitions. [2023-08-29 02:43:48,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 289.6666666666667) internal successors, (869), 3 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:48,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:48,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:48,651 INFO L175 Difference]: Start difference. First operand has 128 places, 150 transitions, 322 flow. Second operand 3 states and 869 transitions. [2023-08-29 02:43:48,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 147 transitions, 458 flow [2023-08-29 02:43:48,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 147 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:43:48,658 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 288 flow [2023-08-29 02:43:48,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2023-08-29 02:43:48,662 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 3 predicate places. [2023-08-29 02:43:48,662 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 288 flow [2023-08-29 02:43:48,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:48,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:48,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:48,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:43:48,663 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:43:48,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:48,664 INFO L85 PathProgramCache]: Analyzing trace with hash 474303619, now seen corresponding path program 1 times [2023-08-29 02:43:48,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:48,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607496918] [2023-08-29 02:43:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:48,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:43:48,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:48,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607496918] [2023-08-29 02:43:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607496918] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:43:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698533952] [2023-08-29 02:43:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:43:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:43:48,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:43:48,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 02:43:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:48,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 02:43:48,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:43:48,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:43:48,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:43:48,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698533952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:43:48,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:43:48,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 02:43:48,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723742006] [2023-08-29 02:43:48,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:43:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:43:48,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:43:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:43:48,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 460 [2023-08-29 02:43:48,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:48,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:48,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 460 [2023-08-29 02:43:48,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:43:50,322 INFO L130 PetriNetUnfolder]: 5215/12986 cut-off events. [2023-08-29 02:43:50,322 INFO L131 PetriNetUnfolder]: For 302/442 co-relation queries the response was YES. [2023-08-29 02:43:50,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21104 conditions, 12986 events. 5215/12986 cut-off events. For 302/442 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 122236 event pairs, 3791 based on Foata normal form. 0/10930 useless extension candidates. Maximal degree in co-relation 20953. Up to 7179 conditions per place. [2023-08-29 02:43:50,391 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 86 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2023-08-29 02:43:50,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 164 transitions, 534 flow [2023-08-29 02:43:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:43:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:43:50,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 854 transitions. [2023-08-29 02:43:50,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.618840579710145 [2023-08-29 02:43:50,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 854 transitions. [2023-08-29 02:43:50,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 854 transitions. [2023-08-29 02:43:50,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:43:50,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 854 transitions. [2023-08-29 02:43:50,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 284.6666666666667) internal successors, (854), 3 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:50,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:50,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 460.0) internal successors, (1840), 4 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:50,402 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 288 flow. Second operand 3 states and 854 transitions. [2023-08-29 02:43:50,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 164 transitions, 534 flow [2023-08-29 02:43:50,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 164 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:43:50,408 INFO L231 Difference]: Finished difference. Result has 132 places, 129 transitions, 292 flow [2023-08-29 02:43:50,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=292, PETRI_PLACES=132, PETRI_TRANSITIONS=129} [2023-08-29 02:43:50,409 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 4 predicate places. [2023-08-29 02:43:50,410 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 129 transitions, 292 flow [2023-08-29 02:43:50,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 257.3333333333333) internal successors, (772), 3 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:50,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:50,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:50,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 02:43:50,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:43:50,618 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr4ASSERT_VIOLATIONDATA_RACE === [t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:43:50,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash 179042226, now seen corresponding path program 1 times [2023-08-29 02:43:50,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:50,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597623314] [2023-08-29 02:43:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:50,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:43:50,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:50,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597623314] [2023-08-29 02:43:50,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597623314] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:43:50,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:43:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:43:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742497029] [2023-08-29 02:43:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:43:50,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:43:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:50,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:43:50,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:43:51,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 460 [2023-08-29 02:43:51,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 129 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:51,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:51,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 460 [2023-08-29 02:43:51,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:43:53,748 INFO L130 PetriNetUnfolder]: 18663/34671 cut-off events. [2023-08-29 02:43:53,748 INFO L131 PetriNetUnfolder]: For 3090/3157 co-relation queries the response was YES. [2023-08-29 02:43:53,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67765 conditions, 34671 events. 18663/34671 cut-off events. For 3090/3157 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 286312 event pairs, 9291 based on Foata normal form. 3/30362 useless extension candidates. Maximal degree in co-relation 65710. Up to 19260 conditions per place. [2023-08-29 02:43:53,949 INFO L137 encePairwiseOnDemand]: 432/460 looper letters, 203 selfloop transitions, 49 changer transitions 0/300 dead transitions. [2023-08-29 02:43:53,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 300 transitions, 1224 flow [2023-08-29 02:43:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:43:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:43:53,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2023-08-29 02:43:53,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5728260869565217 [2023-08-29 02:43:53,953 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2023-08-29 02:43:53,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2023-08-29 02:43:53,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:43:53,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2023-08-29 02:43:53,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:53,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:53,961 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:53,961 INFO L175 Difference]: Start difference. First operand has 132 places, 129 transitions, 292 flow. Second operand 6 states and 1581 transitions. [2023-08-29 02:43:53,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 300 transitions, 1224 flow [2023-08-29 02:43:53,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 300 transitions, 1204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:43:53,973 INFO L231 Difference]: Finished difference. Result has 140 places, 175 transitions, 626 flow [2023-08-29 02:43:53,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=626, PETRI_PLACES=140, PETRI_TRANSITIONS=175} [2023-08-29 02:43:53,974 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 12 predicate places. [2023-08-29 02:43:53,974 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 175 transitions, 626 flow [2023-08-29 02:43:53,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.83333333333334) internal successors, (1337), 6 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:53,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:53,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:53,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 02:43:53,975 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:43:53,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:53,976 INFO L85 PathProgramCache]: Analyzing trace with hash -328725330, now seen corresponding path program 1 times [2023-08-29 02:43:53,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:53,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299617348] [2023-08-29 02:43:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:53,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:43:54,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:54,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299617348] [2023-08-29 02:43:54,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299617348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:43:54,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559343713] [2023-08-29 02:43:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:54,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:43:54,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:43:54,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:43:54,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 02:43:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:54,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:43:54,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:43:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:43:54,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:43:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:43:54,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559343713] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:43:54,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:43:54,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:43:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391685595] [2023-08-29 02:43:54,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:43:54,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:43:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:43:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:43:54,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 460 [2023-08-29 02:43:54,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 175 transitions, 626 flow. Second operand has 7 states, 7 states have (on average 256.7142857142857) internal successors, (1797), 7 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:54,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:54,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 460 [2023-08-29 02:43:54,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:43:54,243 INFO L130 PetriNetUnfolder]: 36/165 cut-off events. [2023-08-29 02:43:54,243 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2023-08-29 02:43:54,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 165 events. 36/165 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 419 event pairs, 14 based on Foata normal form. 19/178 useless extension candidates. Maximal degree in co-relation 357. Up to 74 conditions per place. [2023-08-29 02:43:54,244 INFO L137 encePairwiseOnDemand]: 457/460 looper letters, 23 selfloop transitions, 2 changer transitions 20/67 dead transitions. [2023-08-29 02:43:54,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 293 flow [2023-08-29 02:43:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:43:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:43:54,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1056 transitions. [2023-08-29 02:43:54,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739130434782609 [2023-08-29 02:43:54,247 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1056 transitions. [2023-08-29 02:43:54,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1056 transitions. [2023-08-29 02:43:54,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:43:54,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1056 transitions. [2023-08-29 02:43:54,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 264.0) internal successors, (1056), 4 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:54,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:54,253 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 460.0) internal successors, (2300), 5 states have internal predecessors, (2300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:54,253 INFO L175 Difference]: Start difference. First operand has 140 places, 175 transitions, 626 flow. Second operand 4 states and 1056 transitions. [2023-08-29 02:43:54,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 293 flow [2023-08-29 02:43:54,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 217 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-29 02:43:54,255 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 81 flow [2023-08-29 02:43:54,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2023-08-29 02:43:54,255 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -72 predicate places. [2023-08-29 02:43:54,256 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 81 flow [2023-08-29 02:43:54,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 256.7142857142857) internal successors, (1797), 7 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:54,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:54,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:54,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 02:43:54,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-29 02:43:54,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr1ASSERT_VIOLATIONDATA_RACE === [t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:43:54,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash 901017102, now seen corresponding path program 1 times [2023-08-29 02:43:54,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:54,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694799774] [2023-08-29 02:43:54,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:54,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:54,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:43:54,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:54,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694799774] [2023-08-29 02:43:54,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694799774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:43:54,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:43:54,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:43:54,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753069936] [2023-08-29 02:43:54,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:43:54,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:43:54,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:54,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:43:54,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:43:55,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 460 [2023-08-29 02:43:55,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:55,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 460 [2023-08-29 02:43:55,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:43:55,038 INFO L130 PetriNetUnfolder]: 50/146 cut-off events. [2023-08-29 02:43:55,039 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-29 02:43:55,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 146 events. 50/146 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 235 event pairs, 40 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 306. Up to 106 conditions per place. [2023-08-29 02:43:55,039 INFO L137 encePairwiseOnDemand]: 454/460 looper letters, 32 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-08-29 02:43:55,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 177 flow [2023-08-29 02:43:55,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:43:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:43:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1244 transitions. [2023-08-29 02:43:55,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45072463768115945 [2023-08-29 02:43:55,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1244 transitions. [2023-08-29 02:43:55,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1244 transitions. [2023-08-29 02:43:55,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:43:55,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1244 transitions. [2023-08-29 02:43:55,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.33333333333334) internal successors, (1244), 6 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,062 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,062 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 81 flow. Second operand 6 states and 1244 transitions. [2023-08-29 02:43:55,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 177 flow [2023-08-29 02:43:55,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:43:55,063 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 86 flow [2023-08-29 02:43:55,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=86, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-08-29 02:43:55,064 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -82 predicate places. [2023-08-29 02:43:55,064 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 86 flow [2023-08-29 02:43:55,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:55,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:55,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:43:55,065 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr3ASSERT_VIOLATIONDATA_RACE === [t1_funErr2ASSERT_VIOLATIONDATA_RACE, t1_funErr3ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-29 02:43:55,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:55,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1955525874, now seen corresponding path program 1 times [2023-08-29 02:43:55,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:55,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898230980] [2023-08-29 02:43:55,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:55,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:55,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:43:55,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:55,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898230980] [2023-08-29 02:43:55,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898230980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:43:55,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:43:55,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:43:55,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146680701] [2023-08-29 02:43:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:43:55,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:43:55,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:43:55,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:43:55,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 460 [2023-08-29 02:43:55,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:55,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 460 [2023-08-29 02:43:55,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:43:55,550 INFO L130 PetriNetUnfolder]: 50/143 cut-off events. [2023-08-29 02:43:55,551 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:43:55,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 143 events. 50/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 229 event pairs, 42 based on Foata normal form. 3/146 useless extension candidates. Maximal degree in co-relation 317. Up to 111 conditions per place. [2023-08-29 02:43:55,551 INFO L137 encePairwiseOnDemand]: 455/460 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-29 02:43:55,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 178 flow [2023-08-29 02:43:55,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:43:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:43:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1244 transitions. [2023-08-29 02:43:55,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45072463768115945 [2023-08-29 02:43:55,554 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1244 transitions. [2023-08-29 02:43:55,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1244 transitions. [2023-08-29 02:43:55,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:43:55,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1244 transitions. [2023-08-29 02:43:55,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.33333333333334) internal successors, (1244), 6 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 460.0) internal successors, (3220), 7 states have internal predecessors, (3220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,559 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 86 flow. Second operand 6 states and 1244 transitions. [2023-08-29 02:43:55,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 178 flow [2023-08-29 02:43:55,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:43:55,560 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-29 02:43:55,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=460, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-29 02:43:55,561 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -83 predicate places. [2023-08-29 02:43:55,561 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-29 02:43:55,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:43:55,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-29 02:43:55,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 02:43:55,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 02:43:55,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 02:43:55,564 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 02:43:55,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 02:43:55,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 02:43:55,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 02:43:55,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 02:43:55,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 02:43:55,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 02:43:55,565 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 02:43:55,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 02:43:55,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 02:43:55,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 02:43:55,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 02:43:55,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 02:43:55,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 02:43:55,566 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 02:43:55,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 02:43:55,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 02:43:55,567 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 02:43:55,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:43:55,567 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 02:43:55,569 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:43:55,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:55,608 INFO L130 PetriNetUnfolder]: 58/527 cut-off events. [2023-08-29 02:43:55,608 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:43:55,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 527 events. 58/527 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2659 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:43:55,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:55,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:55,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:43:55,614 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:55,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:55,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 293 transitions, 608 flow [2023-08-29 02:43:55,648 INFO L130 PetriNetUnfolder]: 58/527 cut-off events. [2023-08-29 02:43:55,648 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:43:55,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 527 events. 58/527 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2659 event pairs, 0 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:43:55,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 39668 [2023-08-29 02:43:58,447 INFO L134 LiptonReduction]: Checked pairs total: 174764 [2023-08-29 02:43:58,456 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-29 02:43:58,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:43:58,459 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7235c1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:43:58,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-29 02:43:58,462 INFO L130 PetriNetUnfolder]: 2/32 cut-off events. [2023-08-29 02:43:58,462 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:43:58,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:58,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:43:58,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:43:58,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:58,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1254655351, now seen corresponding path program 1 times [2023-08-29 02:43:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:58,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012342116] [2023-08-29 02:43:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:43:58,477 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:43:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:43:58,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:43:58,504 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:43:58,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-29 02:43:58,504 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-29 02:43:58,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:43:58,505 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:43:58,506 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-29 02:43:58,506 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:43:58,506 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:43:58,575 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-29 02:43:58,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 487 transitions, 1022 flow [2023-08-29 02:43:58,811 INFO L130 PetriNetUnfolder]: 197/1559 cut-off events. [2023-08-29 02:43:58,812 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:43:58,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 1559 events. 197/1559 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10989 event pairs, 1 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 940. Up to 32 conditions per place. [2023-08-29 02:43:58,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 436 places, 487 transitions, 1022 flow [2023-08-29 02:43:58,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 436 places, 487 transitions, 1022 flow [2023-08-29 02:43:58,851 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:43:58,851 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 436 places, 487 transitions, 1022 flow [2023-08-29 02:43:58,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 436 places, 487 transitions, 1022 flow [2023-08-29 02:43:58,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 436 places, 487 transitions, 1022 flow [2023-08-29 02:43:59,057 INFO L130 PetriNetUnfolder]: 197/1559 cut-off events. [2023-08-29 02:43:59,057 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:43:59,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 1559 events. 197/1559 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10989 event pairs, 1 based on Foata normal form. 0/1303 useless extension candidates. Maximal degree in co-relation 940. Up to 32 conditions per place. [2023-08-29 02:43:59,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 153784 [2023-08-29 02:44:03,296 INFO L134 LiptonReduction]: Checked pairs total: 739055 [2023-08-29 02:44:03,296 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-08-29 02:44:03,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:44:03,298 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7235c1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:44:03,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-29 02:44:03,302 INFO L130 PetriNetUnfolder]: 8/69 cut-off events. [2023-08-29 02:44:03,302 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:44:03,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:44:03,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:44:03,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr0ASSERT_VIOLATIONDATA_RACE, t1_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE (and 28 more)] === [2023-08-29 02:44:03,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:44:03,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1941909195, now seen corresponding path program 1 times [2023-08-29 02:44:03,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:44:03,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015579730] [2023-08-29 02:44:03,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:03,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:44:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:44:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:44:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015579730] [2023-08-29 02:44:03,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015579730] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:44:03,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:44:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:44:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874189351] [2023-08-29 02:44:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:44:03,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:44:03,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:44:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:44:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:44:03,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 419 out of 746 [2023-08-29 02:44:03,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 271 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 420.3333333333333) internal successors, (1261), 3 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:44:03,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:44:03,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 419 of 746 [2023-08-29 02:44:03,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand