./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.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_10-ptrmunge_racefree.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 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 --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 02:43:50,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:43:50,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:43:50,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:43:50,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:43:50,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:43:50,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:43:50,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:43:50,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:43:50,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:43:50,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:43:50,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:43:50,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:43:50,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:43:50,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:43:50,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:43:50,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:43:50,243 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:43:50,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:43:50,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:43:50,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:43:50,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:43:50,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:43:50,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:43:50,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:43:50,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:43:50,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:43:50,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:43:50,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:43:50,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:43:50,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:43:50,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:43:50,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:43:50,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:43:50,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:43:50,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:43:50,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:43:50,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:43:50,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:43:50,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:43:50,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:43:50,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:43:50,310 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:43:50,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:43:50,311 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:43:50,311 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:43:50,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:43:50,311 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:43:50,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:43:50,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:43:50,312 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:43:50,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:43:50,312 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:43:50,312 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:43:50,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:43:50,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:43:50,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:43:50,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:43:50,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:43:50,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:43:50,314 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:43:50,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 337bc30baab893db6c1e898eac989d238a0e57740b5469c94ed68dbaffc92f80 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:43:50,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:43:50,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:43:50,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:43:50,567 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:43:50,567 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:43:50,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-29 02:43:51,479 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:43:52,036 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:43:52,038 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_10-ptrmunge_racefree.i [2023-08-29 02:43:52,049 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb77124d3/b1335252ad8141d086de507b23718871/FLAG8319071ae [2023-08-29 02:43:52,060 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb77124d3/b1335252ad8141d086de507b23718871 [2023-08-29 02:43:52,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:43:52,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:43:52,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:43:52,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:43:52,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:43:52,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a358fab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52, skipping insertion in model container [2023-08-29 02:43:52,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:43:52,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:43:52,373 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_10-ptrmunge_racefree.i[30176,30189] [2023-08-29 02:43:52,407 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:43:52,418 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:43:52,448 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_10-ptrmunge_racefree.i[30176,30189] [2023-08-29 02:43:52,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:43:52,491 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:43:52,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52 WrapperNode [2023-08-29 02:43:52,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:43:52,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:43:52,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:43:52,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:43:52,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,559 INFO L138 Inliner]: procedures = 172, calls = 52, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 288 [2023-08-29 02:43:52,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:43:52,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:43:52,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:43:52,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:43:52,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,616 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:43:52,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:43:52,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:43:52,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:43:52,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (1/1) ... [2023-08-29 02:43:52,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:43:52,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:43:52,658 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 02:43:52,673 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 02:43:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:43:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 02:43:52,683 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 02:43:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:43:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:43:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:43:52,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:43:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 02:43:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 02:43:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:43:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:43:52,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:43:52,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:43:52,685 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 02:43:52,841 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:43:52,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:43:53,223 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:43:53,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:43:53,233 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-29 02:43:53,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:43:53 BoogieIcfgContainer [2023-08-29 02:43:53,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:43:53,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:43:53,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:43:53,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:43:53,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:43:52" (1/3) ... [2023-08-29 02:43:53,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccfc6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:43:53, skipping insertion in model container [2023-08-29 02:43:53,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:43:52" (2/3) ... [2023-08-29 02:43:53,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ccfc6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:43:53, skipping insertion in model container [2023-08-29 02:43:53,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:43:53" (3/3) ... [2023-08-29 02:43:53,241 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_10-ptrmunge_racefree.i [2023-08-29 02:43:53,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:43:53,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:43:53,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 02:43:53,252 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:43:53,366 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 02:43:53,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 295 transitions, 612 flow [2023-08-29 02:43:53,559 INFO L130 PetriNetUnfolder]: 58/529 cut-off events. [2023-08-29 02:43:53,559 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:43:53,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 529 events. 58/529 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2652 event pairs, 0 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:43:53,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 295 transitions, 612 flow [2023-08-29 02:43:53,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 295 transitions, 612 flow [2023-08-29 02:43:53,579 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:43:53,590 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 295 transitions, 612 flow [2023-08-29 02:43:53,595 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 295 transitions, 612 flow [2023-08-29 02:43:53,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 295 transitions, 612 flow [2023-08-29 02:43:53,651 INFO L130 PetriNetUnfolder]: 58/529 cut-off events. [2023-08-29 02:43:53,651 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:43:53,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 529 events. 58/529 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2652 event pairs, 0 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:43:53,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 39668 [2023-08-29 02:43:57,423 INFO L134 LiptonReduction]: Checked pairs total: 157988 [2023-08-29 02:43:57,423 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-29 02:43:57,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:43:57,436 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;@593fabe4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:43:57,436 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-29 02:43:57,442 INFO L130 PetriNetUnfolder]: 9/84 cut-off events. [2023-08-29 02:43:57,442 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:43:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:57,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:57,443 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 02:43:57,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:57,447 INFO L85 PathProgramCache]: Analyzing trace with hash -255985751, now seen corresponding path program 1 times [2023-08-29 02:43:57,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:57,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998417568] [2023-08-29 02:43:57,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:57,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:57,644 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 02:43:57,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:57,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998417568] [2023-08-29 02:43:57,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998417568] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:43:57,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:43:57,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:43:57,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320600346] [2023-08-29 02:43:57,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:43:57,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:43:57,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:57,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:43:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:43:57,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 467 [2023-08-29 02:43:57,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 151 transitions, 324 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 02:43:57,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:57,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 467 [2023-08-29 02:43:57,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:43:58,888 INFO L130 PetriNetUnfolder]: 5252/13058 cut-off events. [2023-08-29 02:43:58,888 INFO L131 PetriNetUnfolder]: For 204/308 co-relation queries the response was YES. [2023-08-29 02:43:58,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21096 conditions, 13058 events. 5252/13058 cut-off events. For 204/308 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 121774 event pairs, 4263 based on Foata normal form. 1348/12537 useless extension candidates. Maximal degree in co-relation 20216. Up to 7877 conditions per place. [2023-08-29 02:43:58,946 INFO L137 encePairwiseOnDemand]: 442/467 looper letters, 69 selfloop transitions, 2 changer transitions 0/147 dead transitions. [2023-08-29 02:43:58,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 147 transitions, 458 flow [2023-08-29 02:43:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:43:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:43:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 876 transitions. [2023-08-29 02:43:58,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6252676659528907 [2023-08-29 02:43:58,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 876 transitions. [2023-08-29 02:43:58,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 876 transitions. [2023-08-29 02:43:58,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:43:58,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 876 transitions. [2023-08-29 02:43:58,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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 02:43:58,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 02:43:58,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 02:43:58,970 INFO L175 Difference]: Start difference. First operand has 128 places, 151 transitions, 324 flow. Second operand 3 states and 876 transitions. [2023-08-29 02:43:58,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 147 transitions, 458 flow [2023-08-29 02:43:58,974 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 02:43:58,976 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 288 flow [2023-08-29 02:43:58,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, 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 02:43:58,980 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 3 predicate places. [2023-08-29 02:43:58,980 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 288 flow [2023-08-29 02:43:58,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 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 02:43:58,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:43:58,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:43:58,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:43:58,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === 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 02:43:58,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:43:58,982 INFO L85 PathProgramCache]: Analyzing trace with hash -32606403, now seen corresponding path program 1 times [2023-08-29 02:43:58,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:43:58,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026146277] [2023-08-29 02:43:58,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:43:58,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:43:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:43:59,263 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 02:43:59,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:43:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026146277] [2023-08-29 02:43:59,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026146277] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:43:59,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:43:59,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:43:59,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423475427] [2023-08-29 02:43:59,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:43:59,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:43:59,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:43:59,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:43:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:43:59,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 467 [2023-08-29 02:43:59,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 288 flow. Second operand has 6 states, 6 states have (on average 224.83333333333334) internal successors, (1349), 6 states have internal predecessors, (1349), 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 02:43:59,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:43:59,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 467 [2023-08-29 02:43:59,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:44:01,799 INFO L130 PetriNetUnfolder]: 18689/34381 cut-off events. [2023-08-29 02:44:01,799 INFO L131 PetriNetUnfolder]: For 509/515 co-relation queries the response was YES. [2023-08-29 02:44:01,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63883 conditions, 34381 events. 18689/34381 cut-off events. For 509/515 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 278606 event pairs, 9306 based on Foata normal form. 0/28955 useless extension candidates. Maximal degree in co-relation 62257. Up to 19276 conditions per place. [2023-08-29 02:44:01,932 INFO L137 encePairwiseOnDemand]: 439/467 looper letters, 203 selfloop transitions, 49 changer transitions 0/300 dead transitions. [2023-08-29 02:44:01,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 300 transitions, 1196 flow [2023-08-29 02:44:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:44:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:44:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1593 transitions. [2023-08-29 02:44:01,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5685224839400428 [2023-08-29 02:44:01,936 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1593 transitions. [2023-08-29 02:44:01,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1593 transitions. [2023-08-29 02:44:01,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:44:01,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1593 transitions. [2023-08-29 02:44:01,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.5) internal successors, (1593), 6 states have internal predecessors, (1593), 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 02:44:01,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 02:44:01,943 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 02:44:01,943 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 288 flow. Second operand 6 states and 1593 transitions. [2023-08-29 02:44:01,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 300 transitions, 1196 flow [2023-08-29 02:44:01,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 300 transitions, 1184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:44:01,952 INFO L231 Difference]: Finished difference. Result has 139 places, 175 transitions, 622 flow [2023-08-29 02:44:01,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=129, 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=622, PETRI_PLACES=139, PETRI_TRANSITIONS=175} [2023-08-29 02:44:01,953 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 11 predicate places. [2023-08-29 02:44:01,954 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 175 transitions, 622 flow [2023-08-29 02:44:01,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.83333333333334) internal successors, (1349), 6 states have internal predecessors, (1349), 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 02:44:01,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:44:01,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:44:01,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:44:01,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === 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 02:44:01,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:44:01,957 INFO L85 PathProgramCache]: Analyzing trace with hash -92823221, now seen corresponding path program 1 times [2023-08-29 02:44:01,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:44:01,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766354603] [2023-08-29 02:44:01,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:01,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:44:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:02,009 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 02:44:02,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:44:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766354603] [2023-08-29 02:44:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766354603] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:44:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121889914] [2023-08-29 02:44:02,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:02,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:44:02,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:44:02,027 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 02:44:02,028 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 02:44:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:02,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 02:44:02,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:44:02,133 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 02:44:02,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:44:02,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121889914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:44:02,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:44:02,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-29 02:44:02,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452844425] [2023-08-29 02:44:02,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:44:02,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:44:02,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:44:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:44:02,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:44:02,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 467 [2023-08-29 02:44:02,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 175 transitions, 622 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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 02:44:02,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:44:02,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 467 [2023-08-29 02:44:02,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:44:03,860 INFO L130 PetriNetUnfolder]: 9058/22289 cut-off events. [2023-08-29 02:44:03,861 INFO L131 PetriNetUnfolder]: For 4315/4719 co-relation queries the response was YES. [2023-08-29 02:44:03,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43960 conditions, 22289 events. 9058/22289 cut-off events. For 4315/4719 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 222051 event pairs, 5338 based on Foata normal form. 44/19259 useless extension candidates. Maximal degree in co-relation 41998. Up to 11351 conditions per place. [2023-08-29 02:44:03,963 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 110 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2023-08-29 02:44:03,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 222 transitions, 1000 flow [2023-08-29 02:44:03,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:44:03,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:44:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 860 transitions. [2023-08-29 02:44:03,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6138472519628837 [2023-08-29 02:44:03,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 860 transitions. [2023-08-29 02:44:03,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 860 transitions. [2023-08-29 02:44:03,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:44:03,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 860 transitions. [2023-08-29 02:44:03,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 286.6666666666667) internal successors, (860), 3 states have internal predecessors, (860), 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 02:44:03,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 02:44:03,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 467.0) internal successors, (1868), 4 states have internal predecessors, (1868), 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 02:44:03,970 INFO L175 Difference]: Start difference. First operand has 139 places, 175 transitions, 622 flow. Second operand 3 states and 860 transitions. [2023-08-29 02:44:03,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 222 transitions, 1000 flow [2023-08-29 02:44:03,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 222 transitions, 1000 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:44:03,994 INFO L231 Difference]: Finished difference. Result has 142 places, 175 transitions, 630 flow [2023-08-29 02:44:03,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=630, PETRI_PLACES=142, PETRI_TRANSITIONS=175} [2023-08-29 02:44:03,995 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, 14 predicate places. [2023-08-29 02:44:03,995 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 175 transitions, 630 flow [2023-08-29 02:44:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 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 02:44:03,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:44:03,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:44:04,001 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 02:44:04,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:44:04,201 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 02:44:04,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:44:04,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1270901919, now seen corresponding path program 1 times [2023-08-29 02:44:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:44:04,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812896294] [2023-08-29 02:44:04,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:04,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:44:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:04,246 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 02:44:04,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:44:04,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812896294] [2023-08-29 02:44:04,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812896294] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:44:04,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979446738] [2023-08-29 02:44:04,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:04,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:44:04,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:44:04,250 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 02:44:04,252 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 02:44:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:04,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:44:04,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:44:04,357 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 02:44:04,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:44:04,374 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 02:44:04,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979446738] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:44:04,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:44:04,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:44:04,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590120202] [2023-08-29 02:44:04,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:44:04,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:44:04,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:44:04,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:44:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:44:04,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 467 [2023-08-29 02:44:04,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 175 transitions, 630 flow. Second operand has 7 states, 7 states have (on average 258.7142857142857) internal successors, (1811), 7 states have internal predecessors, (1811), 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 02:44:04,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:44:04,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 467 [2023-08-29 02:44:04,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:44:04,433 INFO L130 PetriNetUnfolder]: 36/165 cut-off events. [2023-08-29 02:44:04,433 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-08-29 02:44:04,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 165 events. 36/165 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 410 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 02:44:04,434 INFO L137 encePairwiseOnDemand]: 464/467 looper letters, 23 selfloop transitions, 2 changer transitions 20/67 dead transitions. [2023-08-29 02:44:04,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 293 flow [2023-08-29 02:44:04,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:44:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:44:04,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1064 transitions. [2023-08-29 02:44:04,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.569593147751606 [2023-08-29 02:44:04,437 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1064 transitions. [2023-08-29 02:44:04,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1064 transitions. [2023-08-29 02:44:04,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:44:04,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1064 transitions. [2023-08-29 02:44:04,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:44:04,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 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 02:44:04,442 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 467.0) internal successors, (2335), 5 states have internal predecessors, (2335), 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 02:44:04,442 INFO L175 Difference]: Start difference. First operand has 142 places, 175 transitions, 630 flow. Second operand 4 states and 1064 transitions. [2023-08-29 02:44:04,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 293 flow [2023-08-29 02:44:04,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 67 transitions, 217 flow, removed 5 selfloop flow, removed 11 redundant places. [2023-08-29 02:44:04,444 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 81 flow [2023-08-29 02:44:04,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=57, PETRI_TRANSITIONS=36} [2023-08-29 02:44:04,445 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -71 predicate places. [2023-08-29 02:44:04,446 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 81 flow [2023-08-29 02:44:04,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 258.7142857142857) internal successors, (1811), 7 states have internal predecessors, (1811), 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 02:44:04,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:44:04,447 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 02:44:04,451 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 02:44:04,651 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 02:44:04,651 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 02:44:04,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:44:04,652 INFO L85 PathProgramCache]: Analyzing trace with hash 627126536, now seen corresponding path program 1 times [2023-08-29 02:44:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:44:04,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299642406] [2023-08-29 02:44:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:04,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:44:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:04,861 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 02:44:04,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:44:04,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299642406] [2023-08-29 02:44:04,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299642406] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:44:04,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:44:04,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:44:04,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608825315] [2023-08-29 02:44:04,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:44:04,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:44:04,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:44:04,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:44:04,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:44:05,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 467 [2023-08-29 02:44:05,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 81 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 02:44:05,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:44:05,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 467 [2023-08-29 02:44:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:44:05,089 INFO L130 PetriNetUnfolder]: 50/147 cut-off events. [2023-08-29 02:44:05,089 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-29 02:44:05,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 147 events. 50/147 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 244 event pairs, 40 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 308. Up to 106 conditions per place. [2023-08-29 02:44:05,090 INFO L137 encePairwiseOnDemand]: 461/467 looper letters, 32 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-08-29 02:44:05,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 177 flow [2023-08-29 02:44:05,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:44:05,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:44:05,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1256 transitions. [2023-08-29 02:44:05,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44825124910778014 [2023-08-29 02:44:05,094 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1256 transitions. [2023-08-29 02:44:05,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1256 transitions. [2023-08-29 02:44:05,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:44:05,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1256 transitions. [2023-08-29 02:44:05,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 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 02:44:05,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 02:44:05,101 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 02:44:05,101 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 81 flow. Second operand 6 states and 1256 transitions. [2023-08-29 02:44:05,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 177 flow [2023-08-29 02:44:05,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:44:05,102 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 86 flow [2023-08-29 02:44:05,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=47, PETRI_TRANSITIONS=35} [2023-08-29 02:44:05,104 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -81 predicate places. [2023-08-29 02:44:05,104 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 86 flow [2023-08-29 02:44:05,104 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 02:44:05,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:44:05,104 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 02:44:05,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:44:05,105 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 02:44:05,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:44:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1335635628, now seen corresponding path program 1 times [2023-08-29 02:44:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:44:05,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794628529] [2023-08-29 02:44:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:05,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:44:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:05,385 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 02:44:05,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:44:05,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794628529] [2023-08-29 02:44:05,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794628529] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:44:05,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:44:05,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:44:05,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626341041] [2023-08-29 02:44:05,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:44:05,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:44:05,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:44:05,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:44:05,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:44:05,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 467 [2023-08-29 02:44:05,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 207.83333333333334) internal successors, (1247), 6 states have internal predecessors, (1247), 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 02:44:05,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:44:05,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 467 [2023-08-29 02:44:05,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:44:05,758 INFO L130 PetriNetUnfolder]: 50/144 cut-off events. [2023-08-29 02:44:05,759 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:44:05,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 144 events. 50/144 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 238 event pairs, 42 based on Foata normal form. 3/147 useless extension candidates. Maximal degree in co-relation 319. Up to 111 conditions per place. [2023-08-29 02:44:05,759 INFO L137 encePairwiseOnDemand]: 462/467 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-29 02:44:05,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 178 flow [2023-08-29 02:44:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:44:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:44:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1256 transitions. [2023-08-29 02:44:05,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44825124910778014 [2023-08-29 02:44:05,762 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1256 transitions. [2023-08-29 02:44:05,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1256 transitions. [2023-08-29 02:44:05,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:44:05,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1256 transitions. [2023-08-29 02:44:05,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.33333333333334) internal successors, (1256), 6 states have internal predecessors, (1256), 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 02:44:05,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 02:44:05,769 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 467.0) internal successors, (3269), 7 states have internal predecessors, (3269), 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 02:44:05,769 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 86 flow. Second operand 6 states and 1256 transitions. [2023-08-29 02:44:05,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 178 flow [2023-08-29 02:44:05,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:44:05,770 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2023-08-29 02:44:05,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=467, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=46, PETRI_TRANSITIONS=0} [2023-08-29 02:44:05,772 INFO L281 CegarLoopForPetriNet]: 128 programPoint places, -82 predicate places. [2023-08-29 02:44:05,772 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2023-08-29 02:44:05,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.83333333333334) internal successors, (1247), 6 states have internal predecessors, (1247), 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 02:44:05,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (21 of 22 remaining) [2023-08-29 02:44:05,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-29 02:44:05,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-29 02:44:05,775 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-29 02:44:05,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-29 02:44:05,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-29 02:44:05,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-29 02:44:05,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-29 02:44:05,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-29 02:44:05,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-29 02:44:05,776 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-29 02:44:05,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-29 02:44:05,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-29 02:44:05,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-08-29 02:44:05,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-08-29 02:44:05,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-29 02:44:05,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-29 02:44:05,777 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-29 02:44:05,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-29 02:44:05,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-29 02:44:05,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-29 02:44:05,781 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-29 02:44:05,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:44:05,782 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 02:44:05,788 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 02:44:05,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 295 transitions, 612 flow [2023-08-29 02:44:05,826 INFO L130 PetriNetUnfolder]: 58/529 cut-off events. [2023-08-29 02:44:05,827 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:44:05,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 529 events. 58/529 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2652 event pairs, 0 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:44:05,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 295 transitions, 612 flow [2023-08-29 02:44:05,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 295 transitions, 612 flow [2023-08-29 02:44:05,837 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:44:05,837 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 295 transitions, 612 flow [2023-08-29 02:44:05,838 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 295 transitions, 612 flow [2023-08-29 02:44:05,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 295 transitions, 612 flow [2023-08-29 02:44:05,887 INFO L130 PetriNetUnfolder]: 58/529 cut-off events. [2023-08-29 02:44:05,887 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 02:44:05,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 529 events. 58/529 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2652 event pairs, 0 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 293. Up to 8 conditions per place. [2023-08-29 02:44:05,908 INFO L119 LiptonReduction]: Number of co-enabled transitions 39668 [2023-08-29 02:44:09,431 INFO L134 LiptonReduction]: Checked pairs total: 175803 [2023-08-29 02:44:09,431 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-08-29 02:44:09,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:44:09,432 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;@593fabe4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:44:09,433 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-29 02:44:09,434 INFO L130 PetriNetUnfolder]: 1/22 cut-off events. [2023-08-29 02:44:09,434 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:44:09,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:44:09,435 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:44:09,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:44:09,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:44:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -904512858, now seen corresponding path program 1 times [2023-08-29 02:44:09,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:44:09,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110858928] [2023-08-29 02:44:09,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:44:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:44:09,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:44:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:44:09,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:44:09,459 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:44:09,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-29 02:44:09,460 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-29 02:44:09,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:44:09,460 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:44:09,460 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-29 02:44:09,461 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:44:09,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:44:09,512 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-29 02:44:09,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 489 transitions, 1026 flow [2023-08-29 02:44:09,704 INFO L130 PetriNetUnfolder]: 197/1561 cut-off events. [2023-08-29 02:44:09,704 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:44:09,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1561 events. 197/1561 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10965 event pairs, 1 based on Foata normal form. 0/1305 useless extension candidates. Maximal degree in co-relation 942. Up to 32 conditions per place. [2023-08-29 02:44:09,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 489 transitions, 1026 flow [2023-08-29 02:44:09,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 438 places, 489 transitions, 1026 flow [2023-08-29 02:44:09,750 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:44:09,750 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 438 places, 489 transitions, 1026 flow [2023-08-29 02:44:09,750 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 438 places, 489 transitions, 1026 flow [2023-08-29 02:44:09,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 489 transitions, 1026 flow [2023-08-29 02:44:09,943 INFO L130 PetriNetUnfolder]: 197/1561 cut-off events. [2023-08-29 02:44:09,943 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2023-08-29 02:44:09,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1561 events. 197/1561 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10965 event pairs, 1 based on Foata normal form. 0/1305 useless extension candidates. Maximal degree in co-relation 942. Up to 32 conditions per place. [2023-08-29 02:44:10,056 INFO L119 LiptonReduction]: Number of co-enabled transitions 153784 [2023-08-29 02:44:14,670 INFO L134 LiptonReduction]: Checked pairs total: 739396 [2023-08-29 02:44:14,670 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-29 02:44:14,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:44:14,671 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;@593fabe4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:44:14,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-29 02:44:14,675 INFO L130 PetriNetUnfolder]: 9/82 cut-off events. [2023-08-29 02:44:14,675 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:44:14,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:44:14,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:44:14,676 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 02:44:14,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:44:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash -608860263, now seen corresponding path program 1 times [2023-08-29 02:44:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:44:14,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892491172] [2023-08-29 02:44:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:44:14,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:44:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:44:14,694 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 02:44:14,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:44:14,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892491172] [2023-08-29 02:44:14,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892491172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:44:14,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:44:14,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:44:14,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554877934] [2023-08-29 02:44:14,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:44:14,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:44:14,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:44:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:44:14,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:44:14,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 747 [2023-08-29 02:44:14,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 272 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 422.3333333333333) internal successors, (1267), 3 states have internal predecessors, (1267), 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 02:44:14,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:44:14,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 747 [2023-08-29 02:44:14,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand