./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_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_36-indirect_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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --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 02:51:46,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:51:46,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:51:47,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:51:47,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:51:47,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:51:47,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:51:47,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:51:47,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:51:47,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:51:47,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:51:47,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:51:47,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:51:47,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:51:47,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:51:47,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:51:47,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:51:47,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:51:47,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:51:47,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:51:47,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:51:47,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:51:47,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:51:47,035 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:51:47,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:51:47,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:51:47,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:51:47,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:51:47,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:51:47,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:51:47,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:51:47,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:51:47,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:51:47,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:51:47,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:51:47,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:51:47,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:51:47,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:51:47,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:51:47,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:51:47,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:51:47,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:51:47,092 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:51:47,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:51:47,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:51:47,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:51:47,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:51:47,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:51:47,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:51:47,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:51:47,094 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:51:47,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:51:47,095 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:51:47,095 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:51:47,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:51:47,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:51:47,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:51:47,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:51:47,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:51:47,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:51:47,096 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:51:47,096 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:51:47,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:51:47,097 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:51:47,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:51:47,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:51:47,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:51:47,097 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:51:47,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:51:47,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:51:47,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:51:47,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:51:47,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:51:47,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:51:47,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:51:47,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:51:47,099 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:51:47,099 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:51:47,099 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:51:47,099 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:51:47,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:51:47,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:51:47,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:51:47,430 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:51:47,430 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:51:47,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-29 02:51:48,621 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:51:48,889 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:51:48,899 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-29 02:51:48,914 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dcc9ff89/0234f130200f4b1e9ab54c2d11a9228c/FLAGbb889ce80 [2023-08-29 02:51:48,929 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dcc9ff89/0234f130200f4b1e9ab54c2d11a9228c [2023-08-29 02:51:48,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:51:48,932 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:51:48,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:51:48,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:51:48,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:51:48,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:51:48" (1/1) ... [2023-08-29 02:51:48,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b607b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:48, skipping insertion in model container [2023-08-29 02:51:48,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:51:48" (1/1) ... [2023-08-29 02:51:48,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:51:48,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:51:49,308 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_36-indirect_racefree.i[30176,30189] [2023-08-29 02:51:49,364 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:51:49,388 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:51:49,434 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_36-indirect_racefree.i[30176,30189] [2023-08-29 02:51:49,444 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:51:49,489 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:51:49,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49 WrapperNode [2023-08-29 02:51:49,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:51:49,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:51:49,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:51:49,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:51:49,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,562 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-08-29 02:51:49,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:51:49,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:51:49,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:51:49,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:51:49,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,604 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:51:49,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:51:49,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:51:49,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:51:49,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (1/1) ... [2023-08-29 02:51:49,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:51:49,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:51:49,642 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 02:51:49,663 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 02:51:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:51:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:51:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:51:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:51:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:51:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:51:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:51:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:51:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:51:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:51:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:51:49,677 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 02:51:49,808 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:51:49,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:51:50,128 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:51:50,137 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:51:50,137 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-29 02:51:50,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:51:50 BoogieIcfgContainer [2023-08-29 02:51:50,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:51:50,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:51:50,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:51:50,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:51:50,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:51:48" (1/3) ... [2023-08-29 02:51:50,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c51b60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:51:50, skipping insertion in model container [2023-08-29 02:51:50,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:51:49" (2/3) ... [2023-08-29 02:51:50,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c51b60f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:51:50, skipping insertion in model container [2023-08-29 02:51:50,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:51:50" (3/3) ... [2023-08-29 02:51:50,147 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-08-29 02:51:50,158 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:51:50,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:51:50,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-29 02:51:50,166 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:51:50,266 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 02:51:50,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:50,432 INFO L130 PetriNetUnfolder]: 17/221 cut-off events. [2023-08-29 02:51:50,432 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:50,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 221 events. 17/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 651 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-29 02:51:50,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:50,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:50,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:51:50,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:50,477 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:50,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:50,525 INFO L130 PetriNetUnfolder]: 17/221 cut-off events. [2023-08-29 02:51:50,525 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:50,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 221 events. 17/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 651 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-29 02:51:50,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 7260 [2023-08-29 02:51:53,925 INFO L134 LiptonReduction]: Checked pairs total: 31024 [2023-08-29 02:51:53,925 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-08-29 02:51:53,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:51:53,943 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;@676dc08f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:51:53,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-29 02:51:53,945 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:51:53,945 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:51:53,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:53,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:51:53,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:53,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash 617, now seen corresponding path program 1 times [2023-08-29 02:51:53,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:53,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160747864] [2023-08-29 02:51:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:53,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:54,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:54,048 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 02:51:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160747864] [2023-08-29 02:51:54,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160747864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:54,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:54,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:51:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327266310] [2023-08-29 02:51:54,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:54,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:51:54,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:54,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:51:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:51:54,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 297 [2023-08-29 02:51:54,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 76 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 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 02:51:54,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:54,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 297 [2023-08-29 02:51:54,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:54,242 INFO L130 PetriNetUnfolder]: 131/563 cut-off events. [2023-08-29 02:51:54,242 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:54,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 563 events. 131/563 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2886 event pairs, 130 based on Foata normal form. 25/539 useless extension candidates. Maximal degree in co-relation 819. Up to 297 conditions per place. [2023-08-29 02:51:54,250 INFO L137 encePairwiseOnDemand]: 282/297 looper letters, 27 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2023-08-29 02:51:54,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 61 transitions, 184 flow [2023-08-29 02:51:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:51:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:51:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 358 transitions. [2023-08-29 02:51:54,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6026936026936027 [2023-08-29 02:51:54,270 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 358 transitions. [2023-08-29 02:51:54,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 358 transitions. [2023-08-29 02:51:54,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:54,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 358 transitions. [2023-08-29 02:51:54,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 179.0) internal successors, (358), 2 states have internal predecessors, (358), 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 02:51:54,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 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 02:51:54,287 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 297.0) internal successors, (891), 3 states have internal predecessors, (891), 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 02:51:54,288 INFO L175 Difference]: Start difference. First operand has 69 places, 76 transitions, 160 flow. Second operand 2 states and 358 transitions. [2023-08-29 02:51:54,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 61 transitions, 184 flow [2023-08-29 02:51:54,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:51:54,295 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 130 flow [2023-08-29 02:51:54,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2023-08-29 02:51:54,300 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -5 predicate places. [2023-08-29 02:51:54,301 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 130 flow [2023-08-29 02:51:54,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 158.5) internal successors, (317), 2 states have internal predecessors, (317), 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 02:51:54,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:54,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:54,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:51:54,303 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:54,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:54,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1437150075, now seen corresponding path program 1 times [2023-08-29 02:51:54,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:54,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162313272] [2023-08-29 02:51:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:54,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:54,434 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 02:51:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162313272] [2023-08-29 02:51:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162313272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:51:54,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634290280] [2023-08-29 02:51:54,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:54,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:51:54,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:54,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:51:54,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:51:54,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 297 [2023-08-29 02:51:54,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 02:51:54,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:54,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 297 [2023-08-29 02:51:54,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:54,571 INFO L130 PetriNetUnfolder]: 130/486 cut-off events. [2023-08-29 02:51:54,571 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 02:51:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 486 events. 130/486 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2478 event pairs, 0 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 793. Up to 275 conditions per place. [2023-08-29 02:51:54,574 INFO L137 encePairwiseOnDemand]: 294/297 looper letters, 39 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2023-08-29 02:51:54,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 240 flow [2023-08-29 02:51:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:51:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:51:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2023-08-29 02:51:54,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656565656565656 [2023-08-29 02:51:54,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2023-08-29 02:51:54,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2023-08-29 02:51:54,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:54,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2023-08-29 02:51:54,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 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 02:51:54,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 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 02:51:54,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 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 02:51:54,581 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 130 flow. Second operand 3 states and 504 transitions. [2023-08-29 02:51:54,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 240 flow [2023-08-29 02:51:54,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 75 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:51:54,584 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 138 flow [2023-08-29 02:51:54,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-08-29 02:51:54,585 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -2 predicate places. [2023-08-29 02:51:54,586 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 138 flow [2023-08-29 02:51:54,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 02:51:54,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:54,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:51:54,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:54,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:54,587 INFO L85 PathProgramCache]: Analyzing trace with hash -893648067, now seen corresponding path program 1 times [2023-08-29 02:51:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745481968] [2023-08-29 02:51:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:54,954 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 02:51:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745481968] [2023-08-29 02:51:54,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745481968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:54,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:54,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:51:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340882154] [2023-08-29 02:51:54,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:54,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:51:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:54,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:51:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:51:55,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 297 [2023-08-29 02:51:55,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 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 02:51:55,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:55,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 297 [2023-08-29 02:51:55,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:55,327 INFO L130 PetriNetUnfolder]: 280/704 cut-off events. [2023-08-29 02:51:55,327 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-29 02:51:55,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 704 events. 280/704 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3093 event pairs, 170 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 1401. Up to 375 conditions per place. [2023-08-29 02:51:55,331 INFO L137 encePairwiseOnDemand]: 285/297 looper letters, 72 selfloop transitions, 10 changer transitions 0/99 dead transitions. [2023-08-29 02:51:55,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 99 transitions, 398 flow [2023-08-29 02:51:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:51:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:51:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 888 transitions. [2023-08-29 02:51:55,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2023-08-29 02:51:55,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 888 transitions. [2023-08-29 02:51:55,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 888 transitions. [2023-08-29 02:51:55,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:55,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 888 transitions. [2023-08-29 02:51:55,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 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 02:51:55,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 02:51:55,341 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 02:51:55,341 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 138 flow. Second operand 6 states and 888 transitions. [2023-08-29 02:51:55,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 99 transitions, 398 flow [2023-08-29 02:51:55,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 99 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:51:55,347 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 150 flow [2023-08-29 02:51:55,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2023-08-29 02:51:55,348 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -1 predicate places. [2023-08-29 02:51:55,349 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 150 flow [2023-08-29 02:51:55,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 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 02:51:55,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:55,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:55,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 02:51:55,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:55,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:55,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1616529121, now seen corresponding path program 1 times [2023-08-29 02:51:55,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:55,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520153103] [2023-08-29 02:51:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:55,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:55,424 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 02:51:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:55,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520153103] [2023-08-29 02:51:55,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520153103] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:51:55,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879637292] [2023-08-29 02:51:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:55,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:51:55,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:51:55,433 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 02:51:55,457 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 02:51:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:55,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:51:55,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:51:55,604 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 02:51:55,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:51:55,633 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 02:51:55,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879637292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:51:55,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:51:55,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:51:55,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466871997] [2023-08-29 02:51:55,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:51:55,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:51:55,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:51:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:51:55,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 297 [2023-08-29 02:51:55,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 155.28571428571428) internal successors, (1087), 7 states have internal predecessors, (1087), 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 02:51:55,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:55,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 297 [2023-08-29 02:51:55,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:55,725 INFO L130 PetriNetUnfolder]: 26/104 cut-off events. [2023-08-29 02:51:55,727 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-29 02:51:55,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 104 events. 26/104 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 200 event pairs, 0 based on Foata normal form. 14/114 useless extension candidates. Maximal degree in co-relation 218. Up to 54 conditions per place. [2023-08-29 02:51:55,728 INFO L137 encePairwiseOnDemand]: 294/297 looper letters, 23 selfloop transitions, 2 changer transitions 6/52 dead transitions. [2023-08-29 02:51:55,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 52 transitions, 197 flow [2023-08-29 02:51:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:51:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:51:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 644 transitions. [2023-08-29 02:51:55,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5420875420875421 [2023-08-29 02:51:55,730 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 644 transitions. [2023-08-29 02:51:55,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 644 transitions. [2023-08-29 02:51:55,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:55,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 644 transitions. [2023-08-29 02:51:55,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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 02:51:55,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 02:51:55,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 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 02:51:55,736 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 150 flow. Second operand 4 states and 644 transitions. [2023-08-29 02:51:55,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 52 transitions, 197 flow [2023-08-29 02:51:55,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 171 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 02:51:55,738 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 79 flow [2023-08-29 02:51:55,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=79, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2023-08-29 02:51:55,740 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -24 predicate places. [2023-08-29 02:51:55,740 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 79 flow [2023-08-29 02:51:55,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 155.28571428571428) internal successors, (1087), 7 states have internal predecessors, (1087), 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 02:51:55,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:55,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:51:55,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 02:51:55,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:51:55,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:55,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:55,968 INFO L85 PathProgramCache]: Analyzing trace with hash -882116110, now seen corresponding path program 1 times [2023-08-29 02:51:55,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164415671] [2023-08-29 02:51:55,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:55,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:56,286 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 02:51:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164415671] [2023-08-29 02:51:56,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164415671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:56,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:56,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:51:56,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418848044] [2023-08-29 02:51:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:56,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:51:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:51:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:51:56,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 297 [2023-08-29 02:51:56,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 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 02:51:56,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:56,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 297 [2023-08-29 02:51:56,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:56,562 INFO L130 PetriNetUnfolder]: 50/143 cut-off events. [2023-08-29 02:51:56,562 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-08-29 02:51:56,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 143 events. 50/143 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 241 event pairs, 42 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 305. Up to 111 conditions per place. [2023-08-29 02:51:56,563 INFO L137 encePairwiseOnDemand]: 291/297 looper letters, 32 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-08-29 02:51:56,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 175 flow [2023-08-29 02:51:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:51:56,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:51:56,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2023-08-29 02:51:56,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44219977553310885 [2023-08-29 02:51:56,567 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2023-08-29 02:51:56,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2023-08-29 02:51:56,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:56,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2023-08-29 02:51:56,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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 02:51:56,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 02:51:56,574 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 02:51:56,574 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 6 states and 788 transitions. [2023-08-29 02:51:56,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 175 flow [2023-08-29 02:51:56,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:51:56,576 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 84 flow [2023-08-29 02:51:56,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-29 02:51:56,578 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -25 predicate places. [2023-08-29 02:51:56,579 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 84 flow [2023-08-29 02:51:56,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 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 02:51:56,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:51:56,580 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] [2023-08-29 02:51:56,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:51:56,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 02:51:56,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:51:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash -852590779, now seen corresponding path program 1 times [2023-08-29 02:51:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:51:56,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873797985] [2023-08-29 02:51:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:51:56,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:51:56,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:51:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 02:51:56,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:51:56,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873797985] [2023-08-29 02:51:56,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873797985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:51:56,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:51:56,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:51:56,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544487918] [2023-08-29 02:51:56,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:51:56,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:51:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:51:56,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:51:56,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:51:57,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 297 [2023-08-29 02:51:57,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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 02:51:57,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:51:57,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 297 [2023-08-29 02:51:57,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:51:57,077 INFO L130 PetriNetUnfolder]: 50/140 cut-off events. [2023-08-29 02:51:57,077 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:51:57,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 140 events. 50/140 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 233 event pairs, 42 based on Foata normal form. 3/142 useless extension candidates. Maximal degree in co-relation 316. Up to 111 conditions per place. [2023-08-29 02:51:57,078 INFO L137 encePairwiseOnDemand]: 292/297 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2023-08-29 02:51:57,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 176 flow [2023-08-29 02:51:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:51:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:51:57,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 788 transitions. [2023-08-29 02:51:57,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44219977553310885 [2023-08-29 02:51:57,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 788 transitions. [2023-08-29 02:51:57,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 788 transitions. [2023-08-29 02:51:57,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:51:57,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 788 transitions. [2023-08-29 02:51:57,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.33333333333334) internal successors, (788), 6 states have internal predecessors, (788), 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 02:51:57,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 02:51:57,086 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 02:51:57,086 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 84 flow. Second operand 6 states and 788 transitions. [2023-08-29 02:51:57,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 176 flow [2023-08-29 02:51:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:51:57,087 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-29 02:51:57,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=297, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-29 02:51:57,088 INFO L281 CegarLoopForPetriNet]: 69 programPoint places, -26 predicate places. [2023-08-29 02:51:57,088 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-29 02:51:57,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.83333333333334) internal successors, (779), 6 states have internal predecessors, (779), 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 02:51:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 18 remaining) [2023-08-29 02:51:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2023-08-29 02:51:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2023-08-29 02:51:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2023-08-29 02:51:57,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2023-08-29 02:51:57,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2023-08-29 02:51:57,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2023-08-29 02:51:57,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2023-08-29 02:51:57,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2023-08-29 02:51:57,093 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2023-08-29 02:51:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:51:57,094 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-29 02:51:57,095 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 (1/2) [2023-08-29 02:51:57,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:57,128 INFO L130 PetriNetUnfolder]: 17/221 cut-off events. [2023-08-29 02:51:57,129 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:51:57,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 221 events. 17/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 651 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-29 02:51:57,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 172 transitions, 352 flow [2023-08-29 02:51:57,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 164 transitions, 333 flow [2023-08-29 02:51:57,131 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:51:57,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 164 transitions, 333 flow [2023-08-29 02:51:57,131 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 164 transitions, 333 flow [2023-08-29 02:51:57,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 164 transitions, 333 flow [2023-08-29 02:51:57,151 INFO L130 PetriNetUnfolder]: 16/213 cut-off events. [2023-08-29 02:51:57,151 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:51:57,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 213 events. 16/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 613 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-29 02:51:57,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 7260 [2023-08-29 02:52:00,094 INFO L134 LiptonReduction]: Checked pairs total: 30634 [2023-08-29 02:52:00,095 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-29 02:52:00,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:52:00,097 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;@676dc08f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:00,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:52:00,100 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2023-08-29 02:52:00,100 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:52:00,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:00,100 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:52:00,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:52:00,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash 106625748, now seen corresponding path program 1 times [2023-08-29 02:52:00,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:00,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011531300] [2023-08-29 02:52:00,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:00,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:00,118 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:52:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:00,140 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:52:00,140 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:52:00,141 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:52:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:52:00,141 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:52:00,142 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:52:00,142 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:52:00,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:52:00,167 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 02:52:00,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:00,215 INFO L130 PetriNetUnfolder]: 31/368 cut-off events. [2023-08-29 02:52:00,216 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:00,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 368 events. 31/368 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1395 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-08-29 02:52:00,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:00,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:00,227 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:52:00,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:00,228 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:00,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:00,265 INFO L130 PetriNetUnfolder]: 31/368 cut-off events. [2023-08-29 02:52:00,265 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:00,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 368 events. 31/368 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1395 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-08-29 02:52:00,284 INFO L119 LiptonReduction]: Number of co-enabled transitions 24684 [2023-08-29 02:52:03,430 INFO L134 LiptonReduction]: Checked pairs total: 141467 [2023-08-29 02:52:03,430 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-29 02:52:03,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:52:03,434 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;@676dc08f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:03,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-08-29 02:52:03,436 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:52:03,436 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:52:03,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:03,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:52:03,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:03,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:03,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1180, now seen corresponding path program 1 times [2023-08-29 02:52:03,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:03,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654274187] [2023-08-29 02:52:03,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:03,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:03,444 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 02:52:03,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:03,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654274187] [2023-08-29 02:52:03,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654274187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:03,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:03,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:52:03,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931924343] [2023-08-29 02:52:03,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:03,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:52:03,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:03,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:52:03,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:52:03,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 380 [2023-08-29 02:52:03,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 130 transitions, 278 flow. Second operand has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 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 02:52:03,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:03,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 380 [2023-08-29 02:52:03,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:04,303 INFO L130 PetriNetUnfolder]: 3147/8736 cut-off events. [2023-08-29 02:52:04,303 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2023-08-29 02:52:04,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13859 conditions, 8736 events. 3147/8736 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 80071 event pairs, 3132 based on Foata normal form. 733/8581 useless extension candidates. Maximal degree in co-relation 9747. Up to 5043 conditions per place. [2023-08-29 02:52:04,359 INFO L137 encePairwiseOnDemand]: 362/380 looper letters, 39 selfloop transitions, 0 changer transitions 0/112 dead transitions. [2023-08-29 02:52:04,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 320 flow [2023-08-29 02:52:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:52:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:52:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 493 transitions. [2023-08-29 02:52:04,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486842105263158 [2023-08-29 02:52:04,361 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 493 transitions. [2023-08-29 02:52:04,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 493 transitions. [2023-08-29 02:52:04,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:04,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 493 transitions. [2023-08-29 02:52:04,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 246.5) internal successors, (493), 2 states have internal predecessors, (493), 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 02:52:04,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 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 02:52:04,364 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 380.0) internal successors, (1140), 3 states have internal predecessors, (1140), 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 02:52:04,365 INFO L175 Difference]: Start difference. First operand has 119 places, 130 transitions, 278 flow. Second operand 2 states and 493 transitions. [2023-08-29 02:52:04,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 320 flow [2023-08-29 02:52:04,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:04,368 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 242 flow [2023-08-29 02:52:04,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=242, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2023-08-29 02:52:04,369 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -3 predicate places. [2023-08-29 02:52:04,369 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 242 flow [2023-08-29 02:52:04,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 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 02:52:04,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:04,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:04,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:52:04,370 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:04,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash -683325464, now seen corresponding path program 1 times [2023-08-29 02:52:04,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:04,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752637323] [2023-08-29 02:52:04,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:04,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:04,388 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 02:52:04,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:04,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752637323] [2023-08-29 02:52:04,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752637323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:04,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:04,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:04,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887445438] [2023-08-29 02:52:04,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:04,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:04,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:04,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:04,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:04,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 380 [2023-08-29 02:52:04,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 02:52:04,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:04,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 380 [2023-08-29 02:52:04,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:05,533 INFO L130 PetriNetUnfolder]: 4793/11789 cut-off events. [2023-08-29 02:52:05,534 INFO L131 PetriNetUnfolder]: For 89/89 co-relation queries the response was YES. [2023-08-29 02:52:05,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19499 conditions, 11789 events. 4793/11789 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 104541 event pairs, 1833 based on Foata normal form. 0/10933 useless extension candidates. Maximal degree in co-relation 19494. Up to 7431 conditions per place. [2023-08-29 02:52:05,649 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 58 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2023-08-29 02:52:05,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 123 transitions, 389 flow [2023-08-29 02:52:05,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:52:05,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:52:05,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 679 transitions. [2023-08-29 02:52:05,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956140350877193 [2023-08-29 02:52:05,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 679 transitions. [2023-08-29 02:52:05,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 679 transitions. [2023-08-29 02:52:05,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:05,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 679 transitions. [2023-08-29 02:52:05,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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 02:52:05,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 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 02:52:05,656 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 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 02:52:05,657 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 242 flow. Second operand 3 states and 679 transitions. [2023-08-29 02:52:05,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 123 transitions, 389 flow [2023-08-29 02:52:05,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 123 transitions, 389 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:05,660 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 248 flow [2023-08-29 02:52:05,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2023-08-29 02:52:05,661 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -4 predicate places. [2023-08-29 02:52:05,661 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 248 flow [2023-08-29 02:52:05,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 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 02:52:05,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:05,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:05,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 02:52:05,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:05,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:05,663 INFO L85 PathProgramCache]: Analyzing trace with hash -106045999, now seen corresponding path program 1 times [2023-08-29 02:52:05,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:05,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468700023] [2023-08-29 02:52:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:05,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:05,685 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 02:52:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468700023] [2023-08-29 02:52:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468700023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:05,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:05,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:05,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052006394] [2023-08-29 02:52:05,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:05,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:05,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:05,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:05,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:05,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 380 [2023-08-29 02:52:05,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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 02:52:05,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:05,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 380 [2023-08-29 02:52:05,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:06,677 INFO L130 PetriNetUnfolder]: 3259/9564 cut-off events. [2023-08-29 02:52:06,678 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2023-08-29 02:52:06,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15115 conditions, 9564 events. 3259/9564 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 92018 event pairs, 1551 based on Foata normal form. 0/8873 useless extension candidates. Maximal degree in co-relation 15109. Up to 5251 conditions per place. [2023-08-29 02:52:06,732 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 52 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-08-29 02:52:06,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 384 flow [2023-08-29 02:52:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:52:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:52:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-29 02:52:06,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6105263157894737 [2023-08-29 02:52:06,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-29 02:52:06,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-29 02:52:06,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:06,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-29 02:52:06,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 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 02:52:06,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 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 02:52:06,740 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 380.0) internal successors, (1520), 4 states have internal predecessors, (1520), 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 02:52:06,740 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 248 flow. Second operand 3 states and 696 transitions. [2023-08-29 02:52:06,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 384 flow [2023-08-29 02:52:06,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 384 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:06,744 INFO L231 Difference]: Finished difference. Result has 118 places, 111 transitions, 260 flow [2023-08-29 02:52:06,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=118, PETRI_TRANSITIONS=111} [2023-08-29 02:52:06,745 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -1 predicate places. [2023-08-29 02:52:06,745 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 111 transitions, 260 flow [2023-08-29 02:52:06,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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 02:52:06,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:06,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:06,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 02:52:06,746 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:06,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1472149405, now seen corresponding path program 1 times [2023-08-29 02:52:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:06,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580616314] [2023-08-29 02:52:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:06,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:06,783 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 02:52:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580616314] [2023-08-29 02:52:06,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580616314] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:52:06,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203360292] [2023-08-29 02:52:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:06,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:52:06,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:52:06,789 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 02:52:06,793 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 02:52:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:06,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:52:06,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:52:06,880 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 02:52:06,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:52:06,900 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 02:52:06,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203360292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:52:06,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:52:06,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:52:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722060088] [2023-08-29 02:52:06,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:52:06,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:52:06,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:06,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:52:06,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:52:06,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 380 [2023-08-29 02:52:06,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 111 transitions, 260 flow. Second operand has 7 states, 7 states have (on average 215.28571428571428) internal successors, (1507), 7 states have internal predecessors, (1507), 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 02:52:06,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:06,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 380 [2023-08-29 02:52:06,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:07,210 INFO L130 PetriNetUnfolder]: 827/2005 cut-off events. [2023-08-29 02:52:07,210 INFO L131 PetriNetUnfolder]: For 428/428 co-relation queries the response was YES. [2023-08-29 02:52:07,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 2005 events. 827/2005 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13100 event pairs, 0 based on Foata normal form. 193/2128 useless extension candidates. Maximal degree in co-relation 4074. Up to 1006 conditions per place. [2023-08-29 02:52:07,221 INFO L137 encePairwiseOnDemand]: 377/380 looper letters, 67 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2023-08-29 02:52:07,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 127 transitions, 429 flow [2023-08-29 02:52:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:52:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:52:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1135 transitions. [2023-08-29 02:52:07,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5973684210526315 [2023-08-29 02:52:07,224 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1135 transitions. [2023-08-29 02:52:07,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1135 transitions. [2023-08-29 02:52:07,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:07,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1135 transitions. [2023-08-29 02:52:07,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 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 02:52:07,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 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 02:52:07,232 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 380.0) internal successors, (2280), 6 states have internal predecessors, (2280), 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 02:52:07,232 INFO L175 Difference]: Start difference. First operand has 118 places, 111 transitions, 260 flow. Second operand 5 states and 1135 transitions. [2023-08-29 02:52:07,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 127 transitions, 429 flow [2023-08-29 02:52:07,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 127 transitions, 425 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 02:52:07,236 INFO L231 Difference]: Finished difference. Result has 100 places, 88 transitions, 208 flow [2023-08-29 02:52:07,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=100, PETRI_TRANSITIONS=88} [2023-08-29 02:52:07,238 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -19 predicate places. [2023-08-29 02:52:07,238 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 88 transitions, 208 flow [2023-08-29 02:52:07,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.28571428571428) internal successors, (1507), 7 states have internal predecessors, (1507), 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 02:52:07,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:07,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:07,248 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 02:52:07,445 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,SelfDestructingSolverStorable10 [2023-08-29 02:52:07,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:07,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1178078001, now seen corresponding path program 1 times [2023-08-29 02:52:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:07,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19663432] [2023-08-29 02:52:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:07,666 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 02:52:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19663432] [2023-08-29 02:52:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19663432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:07,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:07,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504855986] [2023-08-29 02:52:07,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:07,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:07,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:07,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:07,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:07,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 380 [2023-08-29 02:52:07,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 88 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 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 02:52:07,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:07,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 380 [2023-08-29 02:52:07,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:09,413 INFO L130 PetriNetUnfolder]: 7886/14170 cut-off events. [2023-08-29 02:52:09,413 INFO L131 PetriNetUnfolder]: For 5254/5254 co-relation queries the response was YES. [2023-08-29 02:52:09,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30731 conditions, 14170 events. 7886/14170 cut-off events. For 5254/5254 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 100089 event pairs, 2529 based on Foata normal form. 0/13783 useless extension candidates. Maximal degree in co-relation 30723. Up to 5412 conditions per place. [2023-08-29 02:52:09,525 INFO L137 encePairwiseOnDemand]: 336/380 looper letters, 230 selfloop transitions, 84 changer transitions 0/336 dead transitions. [2023-08-29 02:52:09,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 336 transitions, 1392 flow [2023-08-29 02:52:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2023-08-29 02:52:09,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894736842105263 [2023-08-29 02:52:09,530 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1344 transitions. [2023-08-29 02:52:09,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1344 transitions. [2023-08-29 02:52:09,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:09,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1344 transitions. [2023-08-29 02:52:09,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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 02:52:09,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:09,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:09,539 INFO L175 Difference]: Start difference. First operand has 100 places, 88 transitions, 208 flow. Second operand 6 states and 1344 transitions. [2023-08-29 02:52:09,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 336 transitions, 1392 flow [2023-08-29 02:52:09,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 336 transitions, 1369 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-29 02:52:09,547 INFO L231 Difference]: Finished difference. Result has 107 places, 180 transitions, 833 flow [2023-08-29 02:52:09,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=833, PETRI_PLACES=107, PETRI_TRANSITIONS=180} [2023-08-29 02:52:09,548 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -12 predicate places. [2023-08-29 02:52:09,548 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 180 transitions, 833 flow [2023-08-29 02:52:09,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 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 02:52:09,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:09,549 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] [2023-08-29 02:52:09,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 02:52:09,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:09,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1279399372, now seen corresponding path program 1 times [2023-08-29 02:52:09,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:09,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953001028] [2023-08-29 02:52:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:09,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:09,742 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 02:52:09,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:09,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953001028] [2023-08-29 02:52:09,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953001028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:09,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:09,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206127265] [2023-08-29 02:52:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:09,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:09,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 380 [2023-08-29 02:52:09,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 180 transitions, 833 flow. Second operand has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 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 02:52:09,933 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:09,933 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 380 [2023-08-29 02:52:09,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:11,839 INFO L130 PetriNetUnfolder]: 8981/16120 cut-off events. [2023-08-29 02:52:11,840 INFO L131 PetriNetUnfolder]: For 8795/8933 co-relation queries the response was YES. [2023-08-29 02:52:11,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45183 conditions, 16120 events. 8981/16120 cut-off events. For 8795/8933 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 115909 event pairs, 5056 based on Foata normal form. 147/16210 useless extension candidates. Maximal degree in co-relation 45172. Up to 12052 conditions per place. [2023-08-29 02:52:11,941 INFO L137 encePairwiseOnDemand]: 353/380 looper letters, 236 selfloop transitions, 86 changer transitions 0/347 dead transitions. [2023-08-29 02:52:11,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 347 transitions, 2169 flow [2023-08-29 02:52:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1192 transitions. [2023-08-29 02:52:11,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228070175438596 [2023-08-29 02:52:11,946 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1192 transitions. [2023-08-29 02:52:11,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1192 transitions. [2023-08-29 02:52:11,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:11,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1192 transitions. [2023-08-29 02:52:11,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.66666666666666) internal successors, (1192), 6 states have internal predecessors, (1192), 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 02:52:11,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:11,954 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:11,954 INFO L175 Difference]: Start difference. First operand has 107 places, 180 transitions, 833 flow. Second operand 6 states and 1192 transitions. [2023-08-29 02:52:11,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 347 transitions, 2169 flow [2023-08-29 02:52:11,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 347 transitions, 2169 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:11,966 INFO L231 Difference]: Finished difference. Result has 117 places, 271 transitions, 1705 flow [2023-08-29 02:52:11,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1705, PETRI_PLACES=117, PETRI_TRANSITIONS=271} [2023-08-29 02:52:11,967 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -2 predicate places. [2023-08-29 02:52:11,967 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 271 transitions, 1705 flow [2023-08-29 02:52:11,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.66666666666666) internal successors, (1006), 6 states have internal predecessors, (1006), 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 02:52:11,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:11,968 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 02:52:11,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 02:52:11,968 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:11,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:11,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2138944640, now seen corresponding path program 1 times [2023-08-29 02:52:11,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:11,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599470754] [2023-08-29 02:52:11,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:11,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:52:12,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:12,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599470754] [2023-08-29 02:52:12,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599470754] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:12,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:12,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:12,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887594037] [2023-08-29 02:52:12,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:12,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:12,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:12,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:12,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:12,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 380 [2023-08-29 02:52:12,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 271 transitions, 1705 flow. Second operand has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 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 02:52:12,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:12,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 380 [2023-08-29 02:52:12,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:14,456 INFO L130 PetriNetUnfolder]: 10308/18422 cut-off events. [2023-08-29 02:52:14,456 INFO L131 PetriNetUnfolder]: For 20980/21178 co-relation queries the response was YES. [2023-08-29 02:52:14,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59169 conditions, 18422 events. 10308/18422 cut-off events. For 20980/21178 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 134593 event pairs, 5425 based on Foata normal form. 165/18512 useless extension candidates. Maximal degree in co-relation 59153. Up to 13762 conditions per place. [2023-08-29 02:52:14,582 INFO L137 encePairwiseOnDemand]: 353/380 looper letters, 323 selfloop transitions, 101 changer transitions 0/449 dead transitions. [2023-08-29 02:52:14,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 449 transitions, 3417 flow [2023-08-29 02:52:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1192 transitions. [2023-08-29 02:52:14,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228070175438596 [2023-08-29 02:52:14,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1192 transitions. [2023-08-29 02:52:14,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1192 transitions. [2023-08-29 02:52:14,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:14,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1192 transitions. [2023-08-29 02:52:14,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 198.66666666666666) internal successors, (1192), 6 states have internal predecessors, (1192), 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 02:52:14,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:14,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:14,609 INFO L175 Difference]: Start difference. First operand has 117 places, 271 transitions, 1705 flow. Second operand 6 states and 1192 transitions. [2023-08-29 02:52:14,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 449 transitions, 3417 flow [2023-08-29 02:52:14,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 449 transitions, 3401 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:14,652 INFO L231 Difference]: Finished difference. Result has 127 places, 370 transitions, 2765 flow [2023-08-29 02:52:14,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2765, PETRI_PLACES=127, PETRI_TRANSITIONS=370} [2023-08-29 02:52:14,654 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, 8 predicate places. [2023-08-29 02:52:14,654 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 370 transitions, 2765 flow [2023-08-29 02:52:14,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 167.83333333333334) internal successors, (1007), 6 states have internal predecessors, (1007), 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 02:52:14,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:14,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 02:52:14,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 02:52:14,656 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:14,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -721298852, now seen corresponding path program 1 times [2023-08-29 02:52:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:14,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629161385] [2023-08-29 02:52:14,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:14,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:14,774 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 02:52:14,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:14,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629161385] [2023-08-29 02:52:14,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629161385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:52:14,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253936145] [2023-08-29 02:52:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:14,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:52:14,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:52:14,781 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:52:14,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 02:52:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:14,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 02:52:14,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:52:14,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 02:52:15,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 02:52:15,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 02:52:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 02:52:15,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:52:15,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253936145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:15,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:52:15,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-29 02:52:15,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887327780] [2023-08-29 02:52:15,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 02:52:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:15,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 02:52:15,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-29 02:52:15,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 380 [2023-08-29 02:52:15,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 370 transitions, 2765 flow. Second operand has 5 states, 5 states have (on average 205.4) internal successors, (1027), 5 states have internal predecessors, (1027), 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 02:52:15,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:15,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 380 [2023-08-29 02:52:15,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:15,387 INFO L130 PetriNetUnfolder]: 423/1557 cut-off events. [2023-08-29 02:52:15,388 INFO L131 PetriNetUnfolder]: For 1534/1534 co-relation queries the response was YES. [2023-08-29 02:52:15,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4490 conditions, 1557 events. 423/1557 cut-off events. For 1534/1534 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9042 event pairs, 99 based on Foata normal form. 108/1665 useless extension candidates. Maximal degree in co-relation 4469. Up to 612 conditions per place. [2023-08-29 02:52:15,395 INFO L137 encePairwiseOnDemand]: 371/380 looper letters, 32 selfloop transitions, 9 changer transitions 0/90 dead transitions. [2023-08-29 02:52:15,395 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 90 transitions, 524 flow [2023-08-29 02:52:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:52:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:52:15,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 854 transitions. [2023-08-29 02:52:15,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5618421052631579 [2023-08-29 02:52:15,397 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 854 transitions. [2023-08-29 02:52:15,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 854 transitions. [2023-08-29 02:52:15,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:15,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 854 transitions. [2023-08-29 02:52:15,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 02:52:15,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 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 02:52:15,402 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 380.0) internal successors, (1900), 5 states have internal predecessors, (1900), 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 02:52:15,402 INFO L175 Difference]: Start difference. First operand has 127 places, 370 transitions, 2765 flow. Second operand 4 states and 854 transitions. [2023-08-29 02:52:15,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 90 transitions, 524 flow [2023-08-29 02:52:15,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 90 transitions, 296 flow, removed 54 selfloop flow, removed 30 redundant places. [2023-08-29 02:52:15,411 INFO L231 Difference]: Finished difference. Result has 94 places, 82 transitions, 207 flow [2023-08-29 02:52:15,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=207, PETRI_PLACES=94, PETRI_TRANSITIONS=82} [2023-08-29 02:52:15,412 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -25 predicate places. [2023-08-29 02:52:15,412 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 82 transitions, 207 flow [2023-08-29 02:52:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 205.4) internal successors, (1027), 5 states have internal predecessors, (1027), 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 02:52:15,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:15,413 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, 1, 1, 1] [2023-08-29 02:52:15,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 02:52:15,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:52:15,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:15,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:15,620 INFO L85 PathProgramCache]: Analyzing trace with hash -985254922, now seen corresponding path program 1 times [2023-08-29 02:52:15,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:15,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108671] [2023-08-29 02:52:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:15,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:15,905 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 02:52:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:15,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108671] [2023-08-29 02:52:15,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108671] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:15,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:15,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:15,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753032722] [2023-08-29 02:52:15,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:15,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:15,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:15,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:16,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 380 [2023-08-29 02:52:16,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 82 transitions, 207 flow. Second operand has 6 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 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 02:52:16,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:16,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 380 [2023-08-29 02:52:16,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:16,369 INFO L130 PetriNetUnfolder]: 932/1996 cut-off events. [2023-08-29 02:52:16,369 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-08-29 02:52:16,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 1996 events. 932/1996 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9594 event pairs, 828 based on Foata normal form. 0/1978 useless extension candidates. Maximal degree in co-relation 4340. Up to 1617 conditions per place. [2023-08-29 02:52:16,377 INFO L137 encePairwiseOnDemand]: 374/380 looper letters, 74 selfloop transitions, 5 changer transitions 7/105 dead transitions. [2023-08-29 02:52:16,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 105 transitions, 461 flow [2023-08-29 02:52:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1071 transitions. [2023-08-29 02:52:16,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4697368421052632 [2023-08-29 02:52:16,382 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1071 transitions. [2023-08-29 02:52:16,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1071 transitions. [2023-08-29 02:52:16,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:16,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1071 transitions. [2023-08-29 02:52:16,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.5) internal successors, (1071), 6 states have internal predecessors, (1071), 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 02:52:16,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:16,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:16,389 INFO L175 Difference]: Start difference. First operand has 94 places, 82 transitions, 207 flow. Second operand 6 states and 1071 transitions. [2023-08-29 02:52:16,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 105 transitions, 461 flow [2023-08-29 02:52:16,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 105 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:52:16,392 INFO L231 Difference]: Finished difference. Result has 96 places, 78 transitions, 199 flow [2023-08-29 02:52:16,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=96, PETRI_TRANSITIONS=78} [2023-08-29 02:52:16,393 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -23 predicate places. [2023-08-29 02:52:16,394 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 78 transitions, 199 flow [2023-08-29 02:52:16,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.83333333333334) internal successors, (1019), 6 states have internal predecessors, (1019), 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 02:52:16,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:16,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2023-08-29 02:52:16,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 02:52:16,395 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 02:52:16,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:16,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1035999210, now seen corresponding path program 1 times [2023-08-29 02:52:16,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:16,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106469643] [2023-08-29 02:52:16,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:16,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:52:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106469643] [2023-08-29 02:52:16,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106469643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:16,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:16,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:52:16,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75021597] [2023-08-29 02:52:16,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:16,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:52:16,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:52:16,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:52:16,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 380 [2023-08-29 02:52:16,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 78 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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 02:52:16,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:16,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 380 [2023-08-29 02:52:16,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:17,055 INFO L130 PetriNetUnfolder]: 704/1546 cut-off events. [2023-08-29 02:52:17,056 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2023-08-29 02:52:17,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 1546 events. 704/1546 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7199 event pairs, 637 based on Foata normal form. 15/1549 useless extension candidates. Maximal degree in co-relation 3380. Up to 1261 conditions per place. [2023-08-29 02:52:17,058 INFO L137 encePairwiseOnDemand]: 375/380 looper letters, 0 selfloop transitions, 0 changer transitions 93/93 dead transitions. [2023-08-29 02:52:17,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 93 transitions, 387 flow [2023-08-29 02:52:17,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:52:17,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:52:17,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1064 transitions. [2023-08-29 02:52:17,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-29 02:52:17,062 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1064 transitions. [2023-08-29 02:52:17,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1064 transitions. [2023-08-29 02:52:17,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:17,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1064 transitions. [2023-08-29 02:52:17,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 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 02:52:17,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:17,067 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 380.0) internal successors, (2660), 7 states have internal predecessors, (2660), 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 02:52:17,067 INFO L175 Difference]: Start difference. First operand has 96 places, 78 transitions, 199 flow. Second operand 6 states and 1064 transitions. [2023-08-29 02:52:17,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 93 transitions, 387 flow [2023-08-29 02:52:17,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 377 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 02:52:17,069 INFO L231 Difference]: Finished difference. Result has 92 places, 0 transitions, 0 flow [2023-08-29 02:52:17,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=380, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=92, PETRI_TRANSITIONS=0} [2023-08-29 02:52:17,069 INFO L281 CegarLoopForPetriNet]: 119 programPoint places, -27 predicate places. [2023-08-29 02:52:17,069 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 0 transitions, 0 flow [2023-08-29 02:52:17,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.0) internal successors, (1020), 6 states have internal predecessors, (1020), 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 02:52:17,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 24 remaining) [2023-08-29 02:52:17,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-08-29 02:52:17,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-08-29 02:52:17,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-08-29 02:52:17,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-08-29 02:52:17,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-08-29 02:52:17,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (15 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-08-29 02:52:17,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-08-29 02:52:17,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-08-29 02:52:17,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-08-29 02:52:17,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-08-29 02:52:17,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-08-29 02:52:17,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-08-29 02:52:17,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-08-29 02:52:17,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-29 02:52:17,072 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:17,073 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,SAFE,SAFE (1/2) [2023-08-29 02:52:17,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:17,108 INFO L130 PetriNetUnfolder]: 31/368 cut-off events. [2023-08-29 02:52:17,108 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:17,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 368 events. 31/368 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1395 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-08-29 02:52:17,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 240 transitions, 498 flow [2023-08-29 02:52:17,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:17,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:52:17,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:17,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:17,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-29 02:52:17,145 INFO L130 PetriNetUnfolder]: 31/365 cut-off events. [2023-08-29 02:52:17,145 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:52:17,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 365 events. 31/365 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1388 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-08-29 02:52:17,157 INFO L119 LiptonReduction]: Number of co-enabled transitions 24684 [2023-08-29 02:52:19,863 INFO L134 LiptonReduction]: Checked pairs total: 141573 [2023-08-29 02:52:19,864 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-29 02:52:19,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:52:19,865 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;@676dc08f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:19,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:52:19,871 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2023-08-29 02:52:19,871 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:52:19,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:19,871 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:52:19,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:52:19,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 327816861, now seen corresponding path program 1 times [2023-08-29 02:52:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:19,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196278068] [2023-08-29 02:52:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:19,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:52:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:52:19,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:52:19,902 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:52:19,902 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:52:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-29 02:52:19,903 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:52:19,903 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:52:19,903 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:52:19,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:52:19,943 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 02:52:19,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 308 transitions, 646 flow [2023-08-29 02:52:20,028 INFO L130 PetriNetUnfolder]: 50/558 cut-off events. [2023-08-29 02:52:20,029 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:52:20,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 558 events. 50/558 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2421 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 376. Up to 16 conditions per place. [2023-08-29 02:52:20,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 308 transitions, 646 flow [2023-08-29 02:52:20,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 308 transitions, 646 flow [2023-08-29 02:52:20,043 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:52:20,043 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 308 transitions, 646 flow [2023-08-29 02:52:20,043 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 308 transitions, 646 flow [2023-08-29 02:52:20,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 308 transitions, 646 flow [2023-08-29 02:52:20,123 INFO L130 PetriNetUnfolder]: 50/558 cut-off events. [2023-08-29 02:52:20,125 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:52:20,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 558 events. 50/558 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2421 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 376. Up to 16 conditions per place. [2023-08-29 02:52:20,154 INFO L119 LiptonReduction]: Number of co-enabled transitions 50688 [2023-08-29 02:52:23,170 INFO L134 LiptonReduction]: Checked pairs total: 347099 [2023-08-29 02:52:23,171 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-29 02:52:23,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:52:23,172 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;@676dc08f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:52:23,172 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-29 02:52:23,172 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 02:52:23,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:52:23,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:23,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 02:52:23,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:52:23,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:23,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1844, now seen corresponding path program 1 times [2023-08-29 02:52:23,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:23,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444044844] [2023-08-29 02:52:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:23,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:23,178 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 02:52:23,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:23,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444044844] [2023-08-29 02:52:23,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444044844] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:23,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:23,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 02:52:23,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724560400] [2023-08-29 02:52:23,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:23,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 02:52:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:23,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 02:52:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 02:52:23,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 278 out of 470 [2023-08-29 02:52:23,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 179 transitions, 388 flow. Second operand has 2 states, 2 states have (on average 278.5) internal successors, (557), 2 states have internal predecessors, (557), 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 02:52:23,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:23,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 278 of 470 [2023-08-29 02:52:23,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:33,156 INFO L130 PetriNetUnfolder]: 58616/118648 cut-off events. [2023-08-29 02:52:33,156 INFO L131 PetriNetUnfolder]: For 1935/1935 co-relation queries the response was YES. [2023-08-29 02:52:33,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201680 conditions, 118648 events. 58616/118648 cut-off events. For 1935/1935 co-relation queries the response was YES. Maximal size of possible extension queue 2449. Compared 1332303 event pairs, 58405 based on Foata normal form. 14185/122355 useless extension candidates. Maximal degree in co-relation 109052. Up to 81675 conditions per place. [2023-08-29 02:52:33,929 INFO L137 encePairwiseOnDemand]: 446/470 looper letters, 52 selfloop transitions, 0 changer transitions 0/155 dead transitions. [2023-08-29 02:52:33,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 155 transitions, 444 flow [2023-08-29 02:52:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 02:52:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 02:52:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 632 transitions. [2023-08-29 02:52:33,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6723404255319149 [2023-08-29 02:52:33,931 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 632 transitions. [2023-08-29 02:52:33,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 632 transitions. [2023-08-29 02:52:33,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:33,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 632 transitions. [2023-08-29 02:52:33,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 316.0) internal successors, (632), 2 states have internal predecessors, (632), 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 02:52:33,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 470.0) internal successors, (1410), 3 states have internal predecessors, (1410), 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 02:52:33,934 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 470.0) internal successors, (1410), 3 states have internal predecessors, (1410), 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 02:52:33,934 INFO L175 Difference]: Start difference. First operand has 163 places, 179 transitions, 388 flow. Second operand 2 states and 632 transitions. [2023-08-29 02:52:33,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 155 transitions, 444 flow [2023-08-29 02:52:33,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 155 transitions, 444 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:33,939 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 340 flow [2023-08-29 02:52:33,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=340, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2023-08-29 02:52:33,940 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, -3 predicate places. [2023-08-29 02:52:33,940 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 340 flow [2023-08-29 02:52:33,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 278.5) internal successors, (557), 2 states have internal predecessors, (557), 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 02:52:33,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:33,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:33,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-29 02:52:33,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:52:33,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:33,941 INFO L85 PathProgramCache]: Analyzing trace with hash -980125113, now seen corresponding path program 1 times [2023-08-29 02:52:33,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:33,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893896215] [2023-08-29 02:52:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:33,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:33,973 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 02:52:33,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:33,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893896215] [2023-08-29 02:52:33,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893896215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:33,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:33,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:33,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375351808] [2023-08-29 02:52:33,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:33,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:33,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:33,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:33,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:33,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 470 [2023-08-29 02:52:33,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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 02:52:33,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:33,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 470 [2023-08-29 02:52:33,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:52:49,125 INFO L130 PetriNetUnfolder]: 102030/196664 cut-off events. [2023-08-29 02:52:49,126 INFO L131 PetriNetUnfolder]: For 2642/2642 co-relation queries the response was YES. [2023-08-29 02:52:49,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339828 conditions, 196664 events. 102030/196664 cut-off events. For 2642/2642 co-relation queries the response was YES. Maximal size of possible extension queue 3540. Compared 2200688 event pairs, 54751 based on Foata normal form. 0/182545 useless extension candidates. Maximal degree in co-relation 339822. Up to 140685 conditions per place. [2023-08-29 02:52:50,527 INFO L137 encePairwiseOnDemand]: 461/470 looper letters, 75 selfloop transitions, 3 changer transitions 0/167 dead transitions. [2023-08-29 02:52:50,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 167 transitions, 532 flow [2023-08-29 02:52:50,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:52:50,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:52:50,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2023-08-29 02:52:50,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6106382978723405 [2023-08-29 02:52:50,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2023-08-29 02:52:50,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2023-08-29 02:52:50,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:52:50,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2023-08-29 02:52:50,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 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 02:52:50,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 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 02:52:50,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 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 02:52:50,692 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 340 flow. Second operand 3 states and 861 transitions. [2023-08-29 02:52:50,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 167 transitions, 532 flow [2023-08-29 02:52:50,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 167 transitions, 532 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:52:50,702 INFO L231 Difference]: Finished difference. Result has 157 places, 152 transitions, 349 flow [2023-08-29 02:52:50,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=349, PETRI_PLACES=157, PETRI_TRANSITIONS=152} [2023-08-29 02:52:50,703 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, -6 predicate places. [2023-08-29 02:52:50,703 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 152 transitions, 349 flow [2023-08-29 02:52:50,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.3333333333333) internal successors, (784), 3 states have internal predecessors, (784), 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 02:52:50,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:52:50,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:52:50,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-29 02:52:50,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:52:50,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:52:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1582732754, now seen corresponding path program 1 times [2023-08-29 02:52:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:52:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568248238] [2023-08-29 02:52:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:52:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:52:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:52:50,728 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 02:52:50,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:52:50,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568248238] [2023-08-29 02:52:50,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568248238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:52:50,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:52:50,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:52:50,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764706339] [2023-08-29 02:52:50,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:52:50,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:52:50,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:52:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:52:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:52:50,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 470 [2023-08-29 02:52:50,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 152 transitions, 349 flow. Second operand has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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 02:52:50,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:52:50,742 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 470 [2023-08-29 02:52:50,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:53:01,985 INFO L130 PetriNetUnfolder]: 62314/133431 cut-off events. [2023-08-29 02:53:01,985 INFO L131 PetriNetUnfolder]: For 4341/4341 co-relation queries the response was YES. [2023-08-29 02:53:02,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224973 conditions, 133431 events. 62314/133431 cut-off events. For 4341/4341 co-relation queries the response was YES. Maximal size of possible extension queue 2660. Compared 1588499 event pairs, 40803 based on Foata normal form. 0/124581 useless extension candidates. Maximal degree in co-relation 224966. Up to 87398 conditions per place. [2023-08-29 02:53:02,959 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 65 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-08-29 02:53:02,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 166 transitions, 511 flow [2023-08-29 02:53:02,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:53:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:53:02,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 889 transitions. [2023-08-29 02:53:02,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6304964539007092 [2023-08-29 02:53:02,962 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 889 transitions. [2023-08-29 02:53:02,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 889 transitions. [2023-08-29 02:53:02,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:53:02,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 889 transitions. [2023-08-29 02:53:02,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 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 02:53:02,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 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 02:53:02,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 470.0) internal successors, (1880), 4 states have internal predecessors, (1880), 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 02:53:02,966 INFO L175 Difference]: Start difference. First operand has 157 places, 152 transitions, 349 flow. Second operand 3 states and 889 transitions. [2023-08-29 02:53:02,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 166 transitions, 511 flow [2023-08-29 02:53:02,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 166 transitions, 511 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:53:02,971 INFO L231 Difference]: Finished difference. Result has 160 places, 153 transitions, 361 flow [2023-08-29 02:53:02,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=361, PETRI_PLACES=160, PETRI_TRANSITIONS=153} [2023-08-29 02:53:02,972 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, -3 predicate places. [2023-08-29 02:53:02,972 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 153 transitions, 361 flow [2023-08-29 02:53:02,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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 02:53:02,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:53:02,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:53:02,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-29 02:53:02,973 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:53:02,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:53:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1083635368, now seen corresponding path program 1 times [2023-08-29 02:53:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:53:02,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704887363] [2023-08-29 02:53:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:53:02,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:53:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:53:03,005 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 02:53:03,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:53:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704887363] [2023-08-29 02:53:03,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704887363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:53:03,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826110672] [2023-08-29 02:53:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:53:03,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:53:03,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:53:03,008 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:53:03,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 02:53:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:53:03,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:53:03,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:53:03,149 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 02:53:03,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:53:03,168 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 02:53:03,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826110672] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:53:03,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:53:03,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:53:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692312114] [2023-08-29 02:53:03,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:53:03,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:53:03,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:53:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:53:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:53:03,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 470 [2023-08-29 02:53:03,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 153 transitions, 361 flow. Second operand has 7 states, 7 states have (on average 275.14285714285717) internal successors, (1926), 7 states have internal predecessors, (1926), 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 02:53:03,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:53:03,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 470 [2023-08-29 02:53:03,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:53:06,591 INFO L130 PetriNetUnfolder]: 18569/39634 cut-off events. [2023-08-29 02:53:06,591 INFO L131 PetriNetUnfolder]: For 7904/7904 co-relation queries the response was YES. [2023-08-29 02:53:06,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72531 conditions, 39634 events. 18569/39634 cut-off events. For 7904/7904 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 406204 event pairs, 2124 based on Foata normal form. 2707/41698 useless extension candidates. Maximal degree in co-relation 72522. Up to 18532 conditions per place. [2023-08-29 02:53:06,844 INFO L137 encePairwiseOnDemand]: 467/470 looper letters, 118 selfloop transitions, 4 changer transitions 0/207 dead transitions. [2023-08-29 02:53:06,844 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 207 transitions, 714 flow [2023-08-29 02:53:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:53:06,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:53:06,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1760 transitions. [2023-08-29 02:53:06,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.624113475177305 [2023-08-29 02:53:06,848 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1760 transitions. [2023-08-29 02:53:06,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1760 transitions. [2023-08-29 02:53:06,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:53:06,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1760 transitions. [2023-08-29 02:53:06,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.3333333333333) internal successors, (1760), 6 states have internal predecessors, (1760), 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 02:53:06,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 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 02:53:06,856 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 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 02:53:06,857 INFO L175 Difference]: Start difference. First operand has 160 places, 153 transitions, 361 flow. Second operand 6 states and 1760 transitions. [2023-08-29 02:53:06,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 207 transitions, 714 flow [2023-08-29 02:53:06,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 207 transitions, 706 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 02:53:06,868 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 306 flow [2023-08-29 02:53:06,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=306, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2023-08-29 02:53:06,869 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, -20 predicate places. [2023-08-29 02:53:06,869 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 306 flow [2023-08-29 02:53:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 275.14285714285717) internal successors, (1926), 7 states have internal predecessors, (1926), 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 02:53:06,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:53:06,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:53:06,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 02:53:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:53:07,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:53:07,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:53:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash -305324498, now seen corresponding path program 1 times [2023-08-29 02:53:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:53:07,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740953643] [2023-08-29 02:53:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:53:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:53:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:53:07,224 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 02:53:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:53:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740953643] [2023-08-29 02:53:07,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740953643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:53:07,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:53:07,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:53:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071408732] [2023-08-29 02:53:07,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:53:07,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:53:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:53:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:53:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:53:07,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 470 [2023-08-29 02:53:07,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 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 02:53:07,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:53:07,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 470 [2023-08-29 02:53:07,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:54:24,333 INFO L130 PetriNetUnfolder]: 590126/881568 cut-off events. [2023-08-29 02:54:24,333 INFO L131 PetriNetUnfolder]: For 247097/247097 co-relation queries the response was YES. [2023-08-29 02:54:26,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876788 conditions, 881568 events. 590126/881568 cut-off events. For 247097/247097 co-relation queries the response was YES. Maximal size of possible extension queue 10802. Compared 8042189 event pairs, 142080 based on Foata normal form. 0/850630 useless extension candidates. Maximal degree in co-relation 1876779. Up to 279054 conditions per place. [2023-08-29 02:54:30,496 INFO L137 encePairwiseOnDemand]: 404/470 looper letters, 346 selfloop transitions, 126 changer transitions 0/504 dead transitions. [2023-08-29 02:54:30,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 504 transitions, 2094 flow [2023-08-29 02:54:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:54:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:54:30,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1727 transitions. [2023-08-29 02:54:30,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124113475177305 [2023-08-29 02:54:30,500 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1727 transitions. [2023-08-29 02:54:30,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1727 transitions. [2023-08-29 02:54:30,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:54:30,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1727 transitions. [2023-08-29 02:54:30,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 287.8333333333333) internal successors, (1727), 6 states have internal predecessors, (1727), 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 02:54:30,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 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 02:54:30,508 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 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 02:54:30,508 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 306 flow. Second operand 6 states and 1727 transitions. [2023-08-29 02:54:30,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 504 transitions, 2094 flow [2023-08-29 02:54:30,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 504 transitions, 2061 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-08-29 02:54:30,548 INFO L231 Difference]: Finished difference. Result has 150 places, 268 transitions, 1245 flow [2023-08-29 02:54:30,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1245, PETRI_PLACES=150, PETRI_TRANSITIONS=268} [2023-08-29 02:54:30,549 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, -13 predicate places. [2023-08-29 02:54:30,549 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 268 transitions, 1245 flow [2023-08-29 02:54:30,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 211.66666666666666) internal successors, (1270), 6 states have internal predecessors, (1270), 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 02:54:30,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:54:30,550 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] [2023-08-29 02:54:30,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-29 02:54:30,550 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:54:30,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:54:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1430816555, now seen corresponding path program 1 times [2023-08-29 02:54:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:54:30,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552476383] [2023-08-29 02:54:30,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:54:30,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:54:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:54:30,727 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 02:54:30,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:54:30,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552476383] [2023-08-29 02:54:30,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552476383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:54:30,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:54:30,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:54:30,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727427659] [2023-08-29 02:54:30,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:54:30,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:54:30,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:54:30,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:54:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:54:31,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 470 [2023-08-29 02:54:31,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 268 transitions, 1245 flow. Second operand has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 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 02:54:31,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:54:31,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 470 [2023-08-29 02:54:31,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:56:33,586 INFO L130 PetriNetUnfolder]: 695485/1047167 cut-off events. [2023-08-29 02:56:33,586 INFO L131 PetriNetUnfolder]: For 698073/709950 co-relation queries the response was YES. [2023-08-29 02:56:40,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2998536 conditions, 1047167 events. 695485/1047167 cut-off events. For 698073/709950 co-relation queries the response was YES. Maximal size of possible extension queue 13723. Compared 9821628 event pairs, 343916 based on Foata normal form. 5856/1045830 useless extension candidates. Maximal degree in co-relation 2998524. Up to 791111 conditions per place. [2023-08-29 02:56:46,768 INFO L137 encePairwiseOnDemand]: 423/470 looper letters, 475 selfloop transitions, 368 changer transitions 0/880 dead transitions. [2023-08-29 02:56:46,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 880 transitions, 5949 flow [2023-08-29 02:56:46,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 02:56:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 02:56:46,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1580 transitions. [2023-08-29 02:56:46,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602836879432624 [2023-08-29 02:56:46,773 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1580 transitions. [2023-08-29 02:56:46,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1580 transitions. [2023-08-29 02:56:46,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:56:46,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1580 transitions. [2023-08-29 02:56:46,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.3333333333333) internal successors, (1580), 6 states have internal predecessors, (1580), 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 02:56:46,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 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 02:56:46,809 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 470.0) internal successors, (3290), 7 states have internal predecessors, (3290), 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 02:56:46,809 INFO L175 Difference]: Start difference. First operand has 150 places, 268 transitions, 1245 flow. Second operand 6 states and 1580 transitions. [2023-08-29 02:56:46,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 880 transitions, 5949 flow [2023-08-29 02:56:47,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 880 transitions, 5949 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:56:47,015 INFO L231 Difference]: Finished difference. Result has 159 places, 683 transitions, 5199 flow [2023-08-29 02:56:47,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=470, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5199, PETRI_PLACES=159, PETRI_TRANSITIONS=683} [2023-08-29 02:56:47,017 INFO L281 CegarLoopForPetriNet]: 163 programPoint places, -4 predicate places. [2023-08-29 02:56:47,017 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 683 transitions, 5199 flow [2023-08-29 02:56:47,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 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 02:56:47,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:56:47,018 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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 02:56:47,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-29 02:56:47,018 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 02:56:47,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:56:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash -792159532, now seen corresponding path program 1 times [2023-08-29 02:56:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:56:47,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606230644] [2023-08-29 02:56:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:56:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:56:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:56:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 02:56:47,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:56:47,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606230644] [2023-08-29 02:56:47,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606230644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:56:47,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:56:47,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 02:56:47,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509164704] [2023-08-29 02:56:47,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:56:47,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 02:56:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:56:47,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 02:56:47,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 02:56:47,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 470 [2023-08-29 02:56:47,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 683 transitions, 5199 flow. Second operand has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 02:56:47,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:56:47,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 470 [2023-08-29 02:56:47,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand