./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.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 f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:51:10,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:51:10,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:51:10,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:51:10,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:51:10,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:51:10,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:51:10,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:51:10,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:51:10,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:51:10,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:51:10,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:51:10,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:51:10,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:51:10,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:51:10,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:51:10,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:51:10,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:51:10,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:51:10,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:51:10,641 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:51:10,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:51:10,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:51:10,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:51:10,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:51:10,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:51:10,651 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:51:10,651 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:51:10,652 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:51:10,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:51:10,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:51:10,654 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:51:10,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:51:10,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:51:10,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:51:10,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:51:10,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:51:10,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:51:10,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:51:10,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:51:10,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:51:10,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:51:10,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:51:10,687 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:51:10,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:51:10,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:51:10,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:51:10,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:51:10,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:51:10,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:51:10,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:51:10,690 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:51:10,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:51:10,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:51:10,691 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:51:10,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:51:10,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:51:10,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:51:10,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:51:10,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:51:10,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:51:10,692 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:51:10,693 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:51:10,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:51:10,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:51:10,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:51:10,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:51:10,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:51:10,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:51:10,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:10,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:51:10,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:51:10,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:51:10,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:51:10,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:51:10,695 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:51:10,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:51:10,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:51:10,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f70125267ee7251a74a40ef1ba0ea3ced14d0fe45e7a9ea5a666e1eecab0c01c [2022-04-18 15:51:10,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:51:10,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:51:10,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:51:10,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:51:10,969 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:51:10,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2022-04-18 15:51:11,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e820154/f4185ec2c4e149a1b262d272320bd5c7/FLAGfac5853fa [2022-04-18 15:51:11,529 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:51:11,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2022-04-18 15:51:11,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e820154/f4185ec2c4e149a1b262d272320bd5c7/FLAGfac5853fa [2022-04-18 15:51:12,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2e820154/f4185ec2c4e149a1b262d272320bd5c7 [2022-04-18 15:51:12,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:51:12,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:51:12,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:12,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:51:12,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:51:12,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d55a34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12, skipping insertion in model container [2022-04-18 15:51:12,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:51:12,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:51:12,433 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2022-04-18 15:51:12,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:12,484 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:51:12,524 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i[47038,47051] [2022-04-18 15:51:12,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:12,593 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:51:12,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12 WrapperNode [2022-04-18 15:51:12,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:12,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:12,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:51:12,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:51:12,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,711 INFO L137 Inliner]: procedures = 279, calls = 88, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 589 [2022-04-18 15:51:12,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:12,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:51:12,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:51:12,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:51:12,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:51:12,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:51:12,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:51:12,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:51:12,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (1/1) ... [2022-04-18 15:51:12,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:12,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:12,845 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) [2022-04-18 15:51:12,867 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 [2022-04-18 15:51:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:51:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 15:51:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 15:51:12,894 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 15:51:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:51:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:51:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 15:51:12,895 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 15:51:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:51:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:51:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 15:51:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:51:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 15:51:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2022-04-18 15:51:12,896 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2022-04-18 15:51:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:51:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:51:12,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:51:12,898 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:51:13,110 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:51:13,111 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:51:13,802 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:51:13,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:51:13,815 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2022-04-18 15:51:13,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:13 BoogieIcfgContainer [2022-04-18 15:51:13,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:51:13,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:51:13,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:51:13,822 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:51:13,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:51:12" (1/3) ... [2022-04-18 15:51:13,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a26b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:13, skipping insertion in model container [2022-04-18 15:51:13,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:12" (2/3) ... [2022-04-18 15:51:13,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11a26b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:13, skipping insertion in model container [2022-04-18 15:51:13,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:13" (3/3) ... [2022-04-18 15:51:13,825 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2022-04-18 15:51:13,829 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:51:13,829 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:51:13,830 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-04-18 15:51:13,830 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:51:13,960 INFO L135 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2022-04-18 15:51:14,001 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:51:14,007 INFO L340 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 [2022-04-18 15:51:14,007 INFO L341 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-04-18 15:51:14,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 618 places, 660 transitions, 1362 flow [2022-04-18 15:51:14,784 INFO L129 PetriNetUnfolder]: 189/2316 cut-off events. [2022-04-18 15:51:14,784 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-04-18 15:51:14,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2377 conditions, 2316 events. 189/2316 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 16876 event pairs, 0 based on Foata normal form. 0/1982 useless extension candidates. Maximal degree in co-relation 1180. Up to 16 conditions per place. [2022-04-18 15:51:14,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 618 places, 660 transitions, 1362 flow [2022-04-18 15:51:14,890 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 618 places, 660 transitions, 1362 flow [2022-04-18 15:51:14,896 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2022-04-18 15:51:14,896 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:51:14,897 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:14,898 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:14,899 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2022-04-18 15:51:14,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:14,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1990370346, now seen corresponding path program 1 times [2022-04-18 15:51:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:14,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633294633] [2022-04-18 15:51:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:15,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:15,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:15,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633294633] [2022-04-18 15:51:15,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633294633] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:15,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:15,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:51:15,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493625976] [2022-04-18 15:51:15,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:15,155 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:15,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:15,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:15,186 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 660 [2022-04-18 15:51:15,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 660 transitions, 1362 flow. Second operand has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 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) [2022-04-18 15:51:15,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:15,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 660 [2022-04-18 15:51:15,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:18,380 INFO L129 PetriNetUnfolder]: 553/9904 cut-off events. [2022-04-18 15:51:18,381 INFO L130 PetriNetUnfolder]: For 562/928 co-relation queries the response was YES. [2022-04-18 15:51:18,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10812 conditions, 9904 events. 553/9904 cut-off events. For 562/928 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 106331 event pairs, 330 based on Foata normal form. 920/9670 useless extension candidates. Maximal degree in co-relation 7992. Up to 683 conditions per place. [2022-04-18 15:51:18,591 INFO L132 encePairwiseOnDemand]: 626/660 looper letters, 27 selfloop transitions, 2 changer transitions 0/626 dead transitions. [2022-04-18 15:51:18,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 626 transitions, 1352 flow [2022-04-18 15:51:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:18,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1852 transitions. [2022-04-18 15:51:18,617 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9353535353535354 [2022-04-18 15:51:18,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1852 transitions. [2022-04-18 15:51:18,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1852 transitions. [2022-04-18 15:51:18,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:18,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1852 transitions. [2022-04-18 15:51:18,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 617.3333333333334) internal successors, (1852), 3 states have internal predecessors, (1852), 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) [2022-04-18 15:51:18,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 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) [2022-04-18 15:51:18,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 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) [2022-04-18 15:51:18,648 INFO L186 Difference]: Start difference. First operand has 618 places, 660 transitions, 1362 flow. Second operand 3 states and 1852 transitions. [2022-04-18 15:51:18,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 626 transitions, 1352 flow [2022-04-18 15:51:18,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 626 transitions, 1352 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:51:18,668 INFO L242 Difference]: Finished difference. Result has 617 places, 626 transitions, 1298 flow [2022-04-18 15:51:18,671 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1298, PETRI_PLACES=617, PETRI_TRANSITIONS=626} [2022-04-18 15:51:18,677 INFO L335 CegarLoopForPetriNet]: 618 programPoint places, -1 predicate places. [2022-04-18 15:51:18,677 INFO L478 AbstractCegarLoop]: Abstraction has has 617 places, 626 transitions, 1298 flow [2022-04-18 15:51:18,679 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 598.3333333333334) internal successors, (1795), 3 states have internal predecessors, (1795), 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) [2022-04-18 15:51:18,679 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:18,679 INFO L255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:18,680 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:51:18,680 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2022-04-18 15:51:18,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:18,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1566030423, now seen corresponding path program 1 times [2022-04-18 15:51:18,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:18,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35864459] [2022-04-18 15:51:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:18,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:18,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:18,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35864459] [2022-04-18 15:51:18,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35864459] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:18,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:18,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:51:18,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304673843] [2022-04-18 15:51:18,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:18,787 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:18,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:18,792 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 600 out of 660 [2022-04-18 15:51:18,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 626 transitions, 1298 flow. Second operand has 3 states, 3 states have (on average 601.3333333333334) internal successors, (1804), 3 states have internal predecessors, (1804), 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) [2022-04-18 15:51:18,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:18,795 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 600 of 660 [2022-04-18 15:51:18,795 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:20,615 INFO L129 PetriNetUnfolder]: 340/7998 cut-off events. [2022-04-18 15:51:20,615 INFO L130 PetriNetUnfolder]: For 385/529 co-relation queries the response was YES. [2022-04-18 15:51:20,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8513 conditions, 7998 events. 340/7998 cut-off events. For 385/529 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 80089 event pairs, 146 based on Foata normal form. 0/7213 useless extension candidates. Maximal degree in co-relation 8454. Up to 348 conditions per place. [2022-04-18 15:51:20,778 INFO L132 encePairwiseOnDemand]: 655/660 looper letters, 21 selfloop transitions, 1 changer transitions 0/622 dead transitions. [2022-04-18 15:51:20,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 622 transitions, 1334 flow [2022-04-18 15:51:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1826 transitions. [2022-04-18 15:51:20,783 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9222222222222223 [2022-04-18 15:51:20,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1826 transitions. [2022-04-18 15:51:20,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1826 transitions. [2022-04-18 15:51:20,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:20,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1826 transitions. [2022-04-18 15:51:20,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 608.6666666666666) internal successors, (1826), 3 states have internal predecessors, (1826), 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) [2022-04-18 15:51:20,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 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) [2022-04-18 15:51:20,795 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 660.0) internal successors, (2640), 4 states have internal predecessors, (2640), 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) [2022-04-18 15:51:20,795 INFO L186 Difference]: Start difference. First operand has 617 places, 626 transitions, 1298 flow. Second operand 3 states and 1826 transitions. [2022-04-18 15:51:20,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 622 transitions, 1334 flow [2022-04-18 15:51:20,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 622 transitions, 1330 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:51:20,808 INFO L242 Difference]: Finished difference. Result has 613 places, 622 transitions, 1288 flow [2022-04-18 15:51:20,809 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=660, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1288, PETRI_PLACES=613, PETRI_TRANSITIONS=622} [2022-04-18 15:51:20,810 INFO L335 CegarLoopForPetriNet]: 618 programPoint places, -5 predicate places. [2022-04-18 15:51:20,810 INFO L478 AbstractCegarLoop]: Abstraction has has 613 places, 622 transitions, 1288 flow [2022-04-18 15:51:20,811 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 601.3333333333334) internal successors, (1804), 3 states have internal predecessors, (1804), 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) [2022-04-18 15:51:20,812 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:20,812 INFO L255 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, 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] [2022-04-18 15:51:20,812 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:51:20,812 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 63 more)] === [2022-04-18 15:51:20,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:20,813 INFO L85 PathProgramCache]: Analyzing trace with hash -201828572, now seen corresponding path program 1 times [2022-04-18 15:51:20,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:20,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411159457] [2022-04-18 15:51:20,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:20,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:20,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411159457] [2022-04-18 15:51:20,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411159457] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:20,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:20,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:20,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824332984] [2022-04-18 15:51:20,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:20,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:20,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:20,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:20,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:20,947 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 660 [2022-04-18 15:51:20,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 622 transitions, 1288 flow. Second operand has 6 states, 6 states have (on average 418.5) internal successors, (2511), 6 states have internal predecessors, (2511), 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) [2022-04-18 15:51:20,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:20,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 660 [2022-04-18 15:51:20,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand