./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:50:27,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:50:27,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:50:27,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:50:27,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:50:27,079 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:50:27,080 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:50:27,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:50:27,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:50:27,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:50:27,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:50:27,084 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:50:27,084 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:50:27,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:50:27,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:50:27,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:50:27,087 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:50:27,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:50:27,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:50:27,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:50:27,090 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:50:27,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:50:27,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:50:27,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:50:27,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:50:27,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:50:27,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:50:27,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:50:27,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:50:27,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:50:27,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:50:27,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:50:27,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:50:27,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:50:27,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:50:27,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:50:27,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:50:27,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:50:27,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:50:27,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:50:27,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:50:27,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:50:27,116 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:50:27,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:50:27,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:50:27,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:50:27,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:50:27,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:50:27,131 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:50:27,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:50:27,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:50:27,132 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:50:27,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:50:27,132 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:50:27,132 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:50:27,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:50:27,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:50:27,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:50:27,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:50:27,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:50:27,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:50:27,133 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:50:27,133 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:50:27,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:50:27,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:50:27,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:50:27,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:50:27,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:50:27,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:50:27,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:27,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:50:27,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:50:27,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:50:27,135 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:50:27,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:50:27,135 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:50:27,135 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:50:27,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:50:27,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2022-04-18 15:50:27,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:50:27,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:50:27,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:50:27,317 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:50:27,318 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:50:27,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-04-18 15:50:27,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e32bc88e/2ab12afb94aa45969f209cf19f9b7960/FLAG1d355bd18 [2022-04-18 15:50:27,815 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:50:27,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-04-18 15:50:27,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e32bc88e/2ab12afb94aa45969f209cf19f9b7960/FLAG1d355bd18 [2022-04-18 15:50:27,852 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e32bc88e/2ab12afb94aa45969f209cf19f9b7960 [2022-04-18 15:50:27,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:50:27,859 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:50:27,861 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:27,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:50:27,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:50:27,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:27" (1/1) ... [2022-04-18 15:50:27,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5314d95e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:27, skipping insertion in model container [2022-04-18 15:50:27,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:50:27" (1/1) ... [2022-04-18 15:50:27,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:50:27,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:50:28,221 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-04-18 15:50:28,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:28,265 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:50:28,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-04-18 15:50:28,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:50:28,340 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:50:28,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28 WrapperNode [2022-04-18 15:50:28,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:50:28,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:28,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:50:28,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:50:28,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,407 INFO L137 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 339 [2022-04-18 15:50:28,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:50:28,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:50:28,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:50:28,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:50:28,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:50:28,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:50:28,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:50:28,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:50:28,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (1/1) ... [2022-04-18 15:50:28,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:50:28,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:28,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:50:28,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:50:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:50:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:50:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:50:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:50:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:50:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:50:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:50:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:50:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:50:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:50:28,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:50:28,558 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:50:28,656 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:50:28,657 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:50:29,014 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:50:29,028 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:50:29,029 INFO L299 CfgBuilder]: Removed 35 assume(true) statements. [2022-04-18 15:50:29,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:29 BoogieIcfgContainer [2022-04-18 15:50:29,031 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:50:29,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:50:29,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:50:29,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:50:29,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:50:27" (1/3) ... [2022-04-18 15:50:29,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd7cdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:29, skipping insertion in model container [2022-04-18 15:50:29,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:50:28" (2/3) ... [2022-04-18 15:50:29,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd7cdd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:50:29, skipping insertion in model container [2022-04-18 15:50:29,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:50:29" (3/3) ... [2022-04-18 15:50:29,062 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2022-04-18 15:50:29,067 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:50:29,067 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:50:29,067 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-04-18 15:50:29,067 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:50:29,142 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:50:29,190 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:29,194 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:50:29,195 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 15:50:29,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 318 places, 360 transitions, 728 flow [2022-04-18 15:50:29,335 INFO L129 PetriNetUnfolder]: 73/571 cut-off events. [2022-04-18 15:50:29,335 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:29,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 571 events. 73/571 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3113 event pairs, 0 based on Foata normal form. 0/468 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2022-04-18 15:50:29,346 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 360 transitions, 728 flow [2022-04-18 15:50:29,360 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 360 transitions, 728 flow [2022-04-18 15:50:29,371 INFO L129 PetriNetUnfolder]: 17/150 cut-off events. [2022-04-18 15:50:29,372 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:50:29,372 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:29,373 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2022-04-18 15:50:29,373 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:29,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash 675582691, now seen corresponding path program 1 times [2022-04-18 15:50:29,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:29,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010123983] [2022-04-18 15:50:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:29,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:29,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:29,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010123983] [2022-04-18 15:50:29,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010123983] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:29,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:29,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:29,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916751016] [2022-04-18 15:50:29,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:29,562 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:29,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:29,592 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 360 [2022-04-18 15:50:29,609 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 360 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:29,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:29,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 360 [2022-04-18 15:50:29,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:29,693 INFO L129 PetriNetUnfolder]: 10/507 cut-off events. [2022-04-18 15:50:29,693 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 15:50:29,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 507 events. 10/507 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2394 event pairs, 0 based on Foata normal form. 62/524 useless extension candidates. Maximal degree in co-relation 282. Up to 10 conditions per place. [2022-04-18 15:50:29,699 INFO L132 encePairwiseOnDemand]: 319/360 looper letters, 11 selfloop transitions, 2 changer transitions 0/323 dead transitions. [2022-04-18 15:50:29,699 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 323 transitions, 680 flow [2022-04-18 15:50:29,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 983 transitions. [2022-04-18 15:50:29,715 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9101851851851852 [2022-04-18 15:50:29,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 983 transitions. [2022-04-18 15:50:29,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 983 transitions. [2022-04-18 15:50:29,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:29,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 983 transitions. [2022-04-18 15:50:29,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 327.6666666666667) internal successors, (983), 3 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:29,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:29,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 360.0) internal successors, (1440), 4 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:29,735 INFO L186 Difference]: Start difference. First operand has 318 places, 360 transitions, 728 flow. Second operand 3 states and 983 transitions. [2022-04-18 15:50:29,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 323 transitions, 680 flow [2022-04-18 15:50:29,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 323 transitions, 680 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:29,748 INFO L242 Difference]: Finished difference. Result has 318 places, 320 transitions, 658 flow [2022-04-18 15:50:29,750 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=318, PETRI_TRANSITIONS=320} [2022-04-18 15:50:29,753 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 0 predicate places. [2022-04-18 15:50:29,753 INFO L478 AbstractCegarLoop]: Abstraction has has 318 places, 320 transitions, 658 flow [2022-04-18 15:50:29,754 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:29,754 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:29,754 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1] [2022-04-18 15:50:29,754 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:50:29,754 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:29,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:29,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1096004172, now seen corresponding path program 1 times [2022-04-18 15:50:29,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:29,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865026036] [2022-04-18 15:50:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:29,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:29,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865026036] [2022-04-18 15:50:29,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865026036] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332621931] [2022-04-18 15:50:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:29,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:29,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:29,866 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) [2022-04-18 15:50:29,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:50:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:29,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:50:29,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:30,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:30,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:30,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:30,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332621931] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:30,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:30,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:50:30,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902010179] [2022-04-18 15:50:30,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:30,160 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:50:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:30,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:50:30,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:50:30,163 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-04-18 15:50:30,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 320 transitions, 658 flow. Second operand has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:30,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-04-18 15:50:30,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:30,286 INFO L129 PetriNetUnfolder]: 10/514 cut-off events. [2022-04-18 15:50:30,286 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-04-18 15:50:30,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 514 events. 10/514 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2388 event pairs, 0 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 509. Up to 7 conditions per place. [2022-04-18 15:50:30,291 INFO L132 encePairwiseOnDemand]: 354/360 looper letters, 12 selfloop transitions, 9 changer transitions 0/330 dead transitions. [2022-04-18 15:50:30,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 330 transitions, 722 flow [2022-04-18 15:50:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:50:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:50:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2804 transitions. [2022-04-18 15:50:30,296 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8654320987654321 [2022-04-18 15:50:30,296 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2804 transitions. [2022-04-18 15:50:30,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2804 transitions. [2022-04-18 15:50:30,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:30,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2804 transitions. [2022-04-18 15:50:30,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 311.55555555555554) internal successors, (2804), 9 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,307 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 360.0) internal successors, (3600), 10 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,307 INFO L186 Difference]: Start difference. First operand has 318 places, 320 transitions, 658 flow. Second operand 9 states and 2804 transitions. [2022-04-18 15:50:30,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 330 transitions, 722 flow [2022-04-18 15:50:30,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 330 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:30,314 INFO L242 Difference]: Finished difference. Result has 328 places, 326 transitions, 706 flow [2022-04-18 15:50:30,314 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=706, PETRI_PLACES=328, PETRI_TRANSITIONS=326} [2022-04-18 15:50:30,315 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 10 predicate places. [2022-04-18 15:50:30,315 INFO L478 AbstractCegarLoop]: Abstraction has has 328 places, 326 transitions, 706 flow [2022-04-18 15:50:30,317 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.1) internal successors, (3111), 10 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,317 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:30,317 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-04-18 15:50:30,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:30,534 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:30,534 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:30,535 INFO L85 PathProgramCache]: Analyzing trace with hash 684620972, now seen corresponding path program 2 times [2022-04-18 15:50:30,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:30,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48751580] [2022-04-18 15:50:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:30,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:30,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:30,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48751580] [2022-04-18 15:50:30,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48751580] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:30,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346975273] [2022-04-18 15:50:30,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:50:30,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:30,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:30,640 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) [2022-04-18 15:50:30,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 15:50:30,702 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 15:50:30,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:30,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 15:50:30,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:30,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:30,894 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:30,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346975273] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:30,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:30,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-04-18 15:50:30,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177374347] [2022-04-18 15:50:30,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:30,896 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-18 15:50:30,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-18 15:50:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-18 15:50:30,901 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-04-18 15:50:30,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 326 transitions, 706 flow. Second operand has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:30,906 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:30,906 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-04-18 15:50:30,906 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:31,097 INFO L129 PetriNetUnfolder]: 10/534 cut-off events. [2022-04-18 15:50:31,097 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-04-18 15:50:31,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 534 events. 10/534 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2388 event pairs, 0 based on Foata normal form. 4/494 useless extension candidates. Maximal degree in co-relation 485. Up to 11 conditions per place. [2022-04-18 15:50:31,102 INFO L132 encePairwiseOnDemand]: 354/360 looper letters, 20 selfloop transitions, 21 changer transitions 0/350 dead transitions. [2022-04-18 15:50:31,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 350 transitions, 896 flow [2022-04-18 15:50:31,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-18 15:50:31,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-04-18 15:50:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6534 transitions. [2022-04-18 15:50:31,111 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8642857142857143 [2022-04-18 15:50:31,112 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6534 transitions. [2022-04-18 15:50:31,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6534 transitions. [2022-04-18 15:50:31,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:31,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6534 transitions. [2022-04-18 15:50:31,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 311.14285714285717) internal successors, (6534), 21 states have internal predecessors, (6534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,132 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 360.0) internal successors, (7920), 22 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,133 INFO L186 Difference]: Start difference. First operand has 328 places, 326 transitions, 706 flow. Second operand 21 states and 6534 transitions. [2022-04-18 15:50:31,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 350 transitions, 896 flow [2022-04-18 15:50:31,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 350 transitions, 882 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:31,140 INFO L242 Difference]: Finished difference. Result has 352 places, 339 transitions, 830 flow [2022-04-18 15:50:31,141 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=830, PETRI_PLACES=352, PETRI_TRANSITIONS=339} [2022-04-18 15:50:31,141 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 34 predicate places. [2022-04-18 15:50:31,142 INFO L478 AbstractCegarLoop]: Abstraction has has 352 places, 339 transitions, 830 flow [2022-04-18 15:50:31,143 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 311.27777777777777) internal successors, (5603), 18 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,143 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:31,143 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 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] [2022-04-18 15:50:31,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:31,366 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-18 15:50:31,366 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:31,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1675253396, now seen corresponding path program 3 times [2022-04-18 15:50:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:31,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802095978] [2022-04-18 15:50:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:31,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:31,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802095978] [2022-04-18 15:50:31,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802095978] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:31,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397153802] [2022-04-18 15:50:31,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 15:50:31,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:31,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:31,537 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) [2022-04-18 15:50:31,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 15:50:31,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-04-18 15:50:31,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:31,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-18 15:50:31,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:31,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397153802] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:31,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:31,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-04-18 15:50:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279788227] [2022-04-18 15:50:31,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:31,906 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-18 15:50:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-18 15:50:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-04-18 15:50:31,911 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 360 [2022-04-18 15:50:31,916 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 339 transitions, 830 flow. Second operand has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:31,916 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:31,916 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 360 [2022-04-18 15:50:31,916 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:32,211 INFO L129 PetriNetUnfolder]: 10/549 cut-off events. [2022-04-18 15:50:32,211 INFO L130 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2022-04-18 15:50:32,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 549 events. 10/549 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2388 event pairs, 0 based on Foata normal form. 3/508 useless extension candidates. Maximal degree in co-relation 489. Up to 17 conditions per place. [2022-04-18 15:50:32,217 INFO L132 encePairwiseOnDemand]: 354/360 looper letters, 26 selfloop transitions, 30 changer transitions 0/365 dead transitions. [2022-04-18 15:50:32,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 365 transitions, 1088 flow [2022-04-18 15:50:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-18 15:50:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-04-18 15:50:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9329 transitions. [2022-04-18 15:50:32,229 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8637962962962963 [2022-04-18 15:50:32,229 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9329 transitions. [2022-04-18 15:50:32,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9329 transitions. [2022-04-18 15:50:32,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:32,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9329 transitions. [2022-04-18 15:50:32,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 310.96666666666664) internal successors, (9329), 30 states have internal predecessors, (9329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,281 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 360.0) internal successors, (11160), 31 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,282 INFO L186 Difference]: Start difference. First operand has 352 places, 339 transitions, 830 flow. Second operand 30 states and 9329 transitions. [2022-04-18 15:50:32,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 365 transitions, 1088 flow [2022-04-18 15:50:32,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 365 transitions, 1058 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-04-18 15:50:32,302 INFO L242 Difference]: Finished difference. Result has 379 places, 349 transitions, 958 flow [2022-04-18 15:50:32,303 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=360, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=958, PETRI_PLACES=379, PETRI_TRANSITIONS=349} [2022-04-18 15:50:32,304 INFO L335 CegarLoopForPetriNet]: 318 programPoint places, 61 predicate places. [2022-04-18 15:50:32,304 INFO L478 AbstractCegarLoop]: Abstraction has has 379 places, 349 transitions, 958 flow [2022-04-18 15:50:32,306 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 311.4347826086956) internal successors, (7163), 23 states have internal predecessors, (7163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,306 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:32,306 INFO L255 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 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] [2022-04-18 15:50:32,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:32,523 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:32,523 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:50:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:32,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1762761981, now seen corresponding path program 4 times [2022-04-18 15:50:32,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:32,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86079689] [2022-04-18 15:50:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:32,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:32,561 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:32,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:32,598 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:32,599 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:32,599 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-04-18 15:50:32,601 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2022-04-18 15:50:32,601 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2022-04-18 15:50:32,604 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2022-04-18 15:50:32,604 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2022-04-18 15:50:32,604 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2022-04-18 15:50:32,604 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2022-04-18 15:50:32,605 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2022-04-18 15:50:32,605 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2022-04-18 15:50:32,605 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2022-04-18 15:50:32,605 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2022-04-18 15:50:32,606 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2022-04-18 15:50:32,606 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2022-04-18 15:50:32,606 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2022-04-18 15:50:32,606 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2022-04-18 15:50:32,606 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2022-04-18 15:50:32,607 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2022-04-18 15:50:32,607 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2022-04-18 15:50:32,607 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2022-04-18 15:50:32,607 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2022-04-18 15:50:32,607 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2022-04-18 15:50:32,607 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2022-04-18 15:50:32,608 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:50:32,610 INFO L719 BasicCegarLoop]: Path program histogram: [4, 1] [2022-04-18 15:50:32,612 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:32,612 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:50:32,649 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:50:32,651 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:32,655 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:50:32,655 INFO L341 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-04-18 15:50:32,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 411 places, 466 transitions, 950 flow [2022-04-18 15:50:32,743 INFO L129 PetriNetUnfolder]: 118/919 cut-off events. [2022-04-18 15:50:32,743 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:50:32,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 919 events. 118/919 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5816 event pairs, 0 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 573. Up to 12 conditions per place. [2022-04-18 15:50:32,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 466 transitions, 950 flow [2022-04-18 15:50:32,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 466 transitions, 950 flow [2022-04-18 15:50:32,789 INFO L129 PetriNetUnfolder]: 17/147 cut-off events. [2022-04-18 15:50:32,789 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:32,789 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:32,789 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:32,790 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:32,790 INFO L85 PathProgramCache]: Analyzing trace with hash 692731205, now seen corresponding path program 1 times [2022-04-18 15:50:32,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:32,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602549793] [2022-04-18 15:50:32,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:32,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:32,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:32,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:32,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:32,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602549793] [2022-04-18 15:50:32,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602549793] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:32,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:32,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:32,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890344755] [2022-04-18 15:50:32,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:32,818 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:50:32,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:32,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:50:32,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:50:32,819 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 408 out of 466 [2022-04-18 15:50:32,820 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 466 transitions, 950 flow. Second operand has 2 states, 2 states have (on average 409.0) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,820 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:32,820 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 408 of 466 [2022-04-18 15:50:32,820 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:32,908 INFO L129 PetriNetUnfolder]: 17/810 cut-off events. [2022-04-18 15:50:32,908 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-04-18 15:50:32,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 810 events. 17/810 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4784 event pairs, 0 based on Foata normal form. 124/861 useless extension candidates. Maximal degree in co-relation 507. Up to 7 conditions per place. [2022-04-18 15:50:32,922 INFO L132 encePairwiseOnDemand]: 416/466 looper letters, 4 selfloop transitions, 0 changer transitions 0/412 dead transitions. [2022-04-18 15:50:32,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 412 transitions, 850 flow [2022-04-18 15:50:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:50:32,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:50:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 870 transitions. [2022-04-18 15:50:32,924 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9334763948497854 [2022-04-18 15:50:32,924 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 870 transitions. [2022-04-18 15:50:32,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 870 transitions. [2022-04-18 15:50:32,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:32,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 870 transitions. [2022-04-18 15:50:32,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 435.0) internal successors, (870), 2 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,927 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 466.0) internal successors, (1398), 3 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,927 INFO L186 Difference]: Start difference. First operand has 411 places, 466 transitions, 950 flow. Second operand 2 states and 870 transitions. [2022-04-18 15:50:32,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 412 transitions, 850 flow [2022-04-18 15:50:32,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 412 transitions, 850 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:32,933 INFO L242 Difference]: Finished difference. Result has 408 places, 412 transitions, 842 flow [2022-04-18 15:50:32,933 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=842, PETRI_PLACES=408, PETRI_TRANSITIONS=412} [2022-04-18 15:50:32,935 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, -3 predicate places. [2022-04-18 15:50:32,935 INFO L478 AbstractCegarLoop]: Abstraction has has 408 places, 412 transitions, 842 flow [2022-04-18 15:50:32,935 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 409.0) internal successors, (818), 2 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,936 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:32,936 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:32,936 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:50:32,936 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:32,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:32,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1992012664, now seen corresponding path program 1 times [2022-04-18 15:50:32,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:32,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312522345] [2022-04-18 15:50:32,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:32,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:32,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:32,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312522345] [2022-04-18 15:50:32,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312522345] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:32,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:32,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:32,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653245464] [2022-04-18 15:50:32,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:32,958 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:32,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:32,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:32,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:32,960 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-04-18 15:50:32,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 412 transitions, 842 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:32,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:32,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-04-18 15:50:32,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:33,060 INFO L129 PetriNetUnfolder]: 17/814 cut-off events. [2022-04-18 15:50:33,060 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-04-18 15:50:33,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 814 events. 17/814 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4781 event pairs, 0 based on Foata normal form. 0/741 useless extension candidates. Maximal degree in co-relation 842. Up to 14 conditions per place. [2022-04-18 15:50:33,076 INFO L132 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/416 dead transitions. [2022-04-18 15:50:33,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 416 transitions, 880 flow [2022-04-18 15:50:33,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:33,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-04-18 15:50:33,078 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-04-18 15:50:33,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-04-18 15:50:33,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-04-18 15:50:33,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:33,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-04-18 15:50:33,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,082 INFO L186 Difference]: Start difference. First operand has 408 places, 412 transitions, 842 flow. Second operand 3 states and 1219 transitions. [2022-04-18 15:50:33,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 416 transitions, 880 flow [2022-04-18 15:50:33,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 416 transitions, 880 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:33,088 INFO L242 Difference]: Finished difference. Result has 411 places, 413 transitions, 854 flow [2022-04-18 15:50:33,088 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=854, PETRI_PLACES=411, PETRI_TRANSITIONS=413} [2022-04-18 15:50:33,090 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 0 predicate places. [2022-04-18 15:50:33,090 INFO L478 AbstractCegarLoop]: Abstraction has has 411 places, 413 transitions, 854 flow [2022-04-18 15:50:33,090 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,090 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:33,090 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:33,090 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:50:33,090 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:33,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:33,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1902015645, now seen corresponding path program 1 times [2022-04-18 15:50:33,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:33,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461506664] [2022-04-18 15:50:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:33,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:33,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461506664] [2022-04-18 15:50:33,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461506664] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:33,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892896236] [2022-04-18 15:50:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:33,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:33,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:33,119 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) [2022-04-18 15:50:33,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 15:50:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:33,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 15:50:33,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:33,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:50:33,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:50:33,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892896236] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:33,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:50:33,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-18 15:50:33,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686823428] [2022-04-18 15:50:33,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:33,271 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:33,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:33,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:33,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:33,273 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 401 out of 466 [2022-04-18 15:50:33,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 413 transitions, 854 flow. Second operand has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:33,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 401 of 466 [2022-04-18 15:50:33,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:33,413 INFO L129 PetriNetUnfolder]: 13/649 cut-off events. [2022-04-18 15:50:33,414 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-04-18 15:50:33,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 649 events. 13/649 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3432 event pairs, 0 based on Foata normal form. 0/593 useless extension candidates. Maximal degree in co-relation 685. Up to 16 conditions per place. [2022-04-18 15:50:33,439 INFO L132 encePairwiseOnDemand]: 463/466 looper letters, 13 selfloop transitions, 2 changer transitions 0/417 dead transitions. [2022-04-18 15:50:33,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 417 transitions, 892 flow [2022-04-18 15:50:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:33,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1219 transitions. [2022-04-18 15:50:33,442 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8719599427753935 [2022-04-18 15:50:33,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1219 transitions. [2022-04-18 15:50:33,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1219 transitions. [2022-04-18 15:50:33,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:33,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1219 transitions. [2022-04-18 15:50:33,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 466.0) internal successors, (1864), 4 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,464 INFO L186 Difference]: Start difference. First operand has 411 places, 413 transitions, 854 flow. Second operand 3 states and 1219 transitions. [2022-04-18 15:50:33,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 417 transitions, 892 flow [2022-04-18 15:50:33,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 417 transitions, 890 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:33,469 INFO L242 Difference]: Finished difference. Result has 413 places, 414 transitions, 864 flow [2022-04-18 15:50:33,470 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=864, PETRI_PLACES=413, PETRI_TRANSITIONS=414} [2022-04-18 15:50:33,470 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-04-18 15:50:33,471 INFO L478 AbstractCegarLoop]: Abstraction has has 413 places, 414 transitions, 864 flow [2022-04-18 15:50:33,471 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 402.0) internal successors, (1206), 3 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,471 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:33,471 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-04-18 15:50:33,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:33,672 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:33,672 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:33,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:33,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1279722779, now seen corresponding path program 1 times [2022-04-18 15:50:33,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:33,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487260789] [2022-04-18 15:50:33,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:33,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:33,722 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:33,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:33,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487260789] [2022-04-18 15:50:33,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487260789] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:33,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283088224] [2022-04-18 15:50:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:33,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:33,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-18 15:50:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:33,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:50:33,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:33,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:33,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283088224] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:33,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:33,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:50:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930809260] [2022-04-18 15:50:33,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:33,966 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:50:33,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:50:33,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:50:33,968 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-04-18 15:50:33,970 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 414 transitions, 864 flow. Second operand has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:33,971 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:33,971 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-04-18 15:50:33,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:34,085 INFO L129 PetriNetUnfolder]: 13/656 cut-off events. [2022-04-18 15:50:34,085 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-04-18 15:50:34,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 711 conditions, 656 events. 13/656 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3422 event pairs, 0 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 703. Up to 11 conditions per place. [2022-04-18 15:50:34,102 INFO L132 encePairwiseOnDemand]: 460/466 looper letters, 14 selfloop transitions, 9 changer transitions 0/424 dead transitions. [2022-04-18 15:50:34,102 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 424 transitions, 932 flow [2022-04-18 15:50:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:50:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:50:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3625 transitions. [2022-04-18 15:50:34,143 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8643299952312827 [2022-04-18 15:50:34,143 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3625 transitions. [2022-04-18 15:50:34,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3625 transitions. [2022-04-18 15:50:34,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:34,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3625 transitions. [2022-04-18 15:50:34,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 402.77777777777777) internal successors, (3625), 9 states have internal predecessors, (3625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,153 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 466.0) internal successors, (4660), 10 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,153 INFO L186 Difference]: Start difference. First operand has 413 places, 414 transitions, 864 flow. Second operand 9 states and 3625 transitions. [2022-04-18 15:50:34,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 424 transitions, 932 flow [2022-04-18 15:50:34,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 424 transitions, 930 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:34,160 INFO L242 Difference]: Finished difference. Result has 423 places, 420 transitions, 912 flow [2022-04-18 15:50:34,161 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=912, PETRI_PLACES=423, PETRI_TRANSITIONS=420} [2022-04-18 15:50:34,162 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 12 predicate places. [2022-04-18 15:50:34,162 INFO L478 AbstractCegarLoop]: Abstraction has has 423 places, 420 transitions, 912 flow [2022-04-18 15:50:34,163 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 402.2) internal successors, (4022), 10 states have internal predecessors, (4022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,163 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:34,163 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-04-18 15:50:34,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:34,380 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:34,380 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:34,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:34,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1448737851, now seen corresponding path program 2 times [2022-04-18 15:50:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:34,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732346557] [2022-04-18 15:50:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:34,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:34,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732346557] [2022-04-18 15:50:34,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732346557] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:34,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746024231] [2022-04-18 15:50:34,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:50:34,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:34,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:34,438 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:34,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-18 15:50:34,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 15:50:34,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:34,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 15:50:34,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:34,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:34,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746024231] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:34,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:34,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-04-18 15:50:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799344127] [2022-04-18 15:50:34,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:34,751 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-18 15:50:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-18 15:50:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-18 15:50:34,754 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-04-18 15:50:34,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 420 transitions, 912 flow. Second operand has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:34,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:34,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-04-18 15:50:34,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:34,967 INFO L129 PetriNetUnfolder]: 13/676 cut-off events. [2022-04-18 15:50:34,967 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2022-04-18 15:50:34,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 676 events. 13/676 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3422 event pairs, 0 based on Foata normal form. 4/626 useless extension candidates. Maximal degree in co-relation 790. Up to 11 conditions per place. [2022-04-18 15:50:34,980 INFO L132 encePairwiseOnDemand]: 460/466 looper letters, 22 selfloop transitions, 21 changer transitions 0/444 dead transitions. [2022-04-18 15:50:34,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 444 transitions, 1106 flow [2022-04-18 15:50:34,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-18 15:50:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-04-18 15:50:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8447 transitions. [2022-04-18 15:50:34,991 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8631718781933374 [2022-04-18 15:50:34,991 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8447 transitions. [2022-04-18 15:50:34,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8447 transitions. [2022-04-18 15:50:34,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:34,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8447 transitions. [2022-04-18 15:50:35,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 402.23809523809524) internal successors, (8447), 21 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,065 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 466.0) internal successors, (10252), 22 states have internal predecessors, (10252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,066 INFO L186 Difference]: Start difference. First operand has 423 places, 420 transitions, 912 flow. Second operand 21 states and 8447 transitions. [2022-04-18 15:50:35,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 444 transitions, 1106 flow [2022-04-18 15:50:35,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 444 transitions, 1092 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:35,072 INFO L242 Difference]: Finished difference. Result has 447 places, 433 transitions, 1036 flow [2022-04-18 15:50:35,074 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1036, PETRI_PLACES=447, PETRI_TRANSITIONS=433} [2022-04-18 15:50:35,075 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 36 predicate places. [2022-04-18 15:50:35,082 INFO L478 AbstractCegarLoop]: Abstraction has has 447 places, 433 transitions, 1036 flow [2022-04-18 15:50:35,084 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 402.3333333333333) internal successors, (7242), 18 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,084 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:35,085 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-04-18 15:50:35,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-04-18 15:50:35,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:35,303 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:35,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash 738898555, now seen corresponding path program 3 times [2022-04-18 15:50:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:35,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120469853] [2022-04-18 15:50:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:35,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:35,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120469853] [2022-04-18 15:50:35,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120469853] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:35,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862242924] [2022-04-18 15:50:35,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 15:50:35,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:35,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:35,450 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:35,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-18 15:50:35,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-04-18 15:50:35,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:35,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-18 15:50:35,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:35,700 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:35,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:35,855 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-04-18 15:50:35,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862242924] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:35,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:35,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2022-04-18 15:50:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366927550] [2022-04-18 15:50:35,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:35,856 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-04-18 15:50:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-04-18 15:50:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2022-04-18 15:50:35,860 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 466 [2022-04-18 15:50:35,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 433 transitions, 1036 flow. Second operand has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:35,865 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:35,865 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 466 [2022-04-18 15:50:35,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:36,203 INFO L129 PetriNetUnfolder]: 13/691 cut-off events. [2022-04-18 15:50:36,203 INFO L130 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-04-18 15:50:36,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 691 events. 13/691 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3422 event pairs, 0 based on Foata normal form. 3/640 useless extension candidates. Maximal degree in co-relation 886. Up to 17 conditions per place. [2022-04-18 15:50:36,216 INFO L132 encePairwiseOnDemand]: 460/466 looper letters, 28 selfloop transitions, 30 changer transitions 0/459 dead transitions. [2022-04-18 15:50:36,216 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 459 transitions, 1298 flow [2022-04-18 15:50:36,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-18 15:50:36,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-04-18 15:50:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 12061 transitions. [2022-04-18 15:50:36,225 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8627324749642347 [2022-04-18 15:50:36,225 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 12061 transitions. [2022-04-18 15:50:36,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 12061 transitions. [2022-04-18 15:50:36,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:36,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 12061 transitions. [2022-04-18 15:50:36,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 402.03333333333336) internal successors, (12061), 30 states have internal predecessors, (12061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,253 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 466.0) internal successors, (14446), 31 states have internal predecessors, (14446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,253 INFO L186 Difference]: Start difference. First operand has 447 places, 433 transitions, 1036 flow. Second operand 30 states and 12061 transitions. [2022-04-18 15:50:36,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 459 transitions, 1298 flow [2022-04-18 15:50:36,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 459 transitions, 1268 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-04-18 15:50:36,260 INFO L242 Difference]: Finished difference. Result has 474 places, 443 transitions, 1164 flow [2022-04-18 15:50:36,261 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=466, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1164, PETRI_PLACES=474, PETRI_TRANSITIONS=443} [2022-04-18 15:50:36,261 INFO L335 CegarLoopForPetriNet]: 411 programPoint places, 63 predicate places. [2022-04-18 15:50:36,261 INFO L478 AbstractCegarLoop]: Abstraction has has 474 places, 443 transitions, 1164 flow [2022-04-18 15:50:36,263 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 402.4782608695652) internal successors, (9257), 23 states have internal predecessors, (9257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,263 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:36,263 INFO L255 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-04-18 15:50:36,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-18 15:50:36,477 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:36,477 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2022-04-18 15:50:36,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash -75184896, now seen corresponding path program 4 times [2022-04-18 15:50:36,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:36,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831966512] [2022-04-18 15:50:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:36,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:36,507 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:50:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:50:36,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:50:36,543 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:50:36,543 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 27 remaining) [2022-04-18 15:50:36,543 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2022-04-18 15:50:36,544 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2022-04-18 15:50:36,545 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2022-04-18 15:50:36,545 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:50:36,545 INFO L719 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2022-04-18 15:50:36,546 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:50:36,546 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:50:36,590 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:50:36,591 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:50:36,592 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:50:36,592 INFO L341 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2022-04-18 15:50:36,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 504 places, 572 transitions, 1174 flow [2022-04-18 15:50:36,804 INFO L129 PetriNetUnfolder]: 168/1312 cut-off events. [2022-04-18 15:50:36,804 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:50:36,833 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1340 conditions, 1312 events. 168/1312 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8787 event pairs, 1 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 927. Up to 16 conditions per place. [2022-04-18 15:50:36,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 572 transitions, 1174 flow [2022-04-18 15:50:36,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 572 transitions, 1174 flow [2022-04-18 15:50:36,855 INFO L129 PetriNetUnfolder]: 19/160 cut-off events. [2022-04-18 15:50:36,856 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:50:36,856 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:36,856 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:36,856 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:36,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2135795003, now seen corresponding path program 1 times [2022-04-18 15:50:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:36,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125574127] [2022-04-18 15:50:36,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:36,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:36,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:36,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:36,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125574127] [2022-04-18 15:50:36,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125574127] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:36,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:36,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:36,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384974138] [2022-04-18 15:50:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:36,869 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:50:36,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:50:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:50:36,871 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 499 out of 572 [2022-04-18 15:50:36,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 572 transitions, 1174 flow. Second operand has 2 states, 2 states have (on average 500.0) internal successors, (1000), 2 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:36,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:36,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 499 of 572 [2022-04-18 15:50:36,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:37,063 INFO L129 PetriNetUnfolder]: 27/1160 cut-off events. [2022-04-18 15:50:37,063 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-04-18 15:50:37,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 1160 events. 27/1160 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7586 event pairs, 1 based on Foata normal form. 250/1305 useless extension candidates. Maximal degree in co-relation 824. Up to 16 conditions per place. [2022-04-18 15:50:37,082 INFO L132 encePairwiseOnDemand]: 510/572 looper letters, 6 selfloop transitions, 0 changer transitions 0/505 dead transitions. [2022-04-18 15:50:37,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 505 transitions, 1052 flow [2022-04-18 15:50:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:50:37,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:50:37,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1066 transitions. [2022-04-18 15:50:37,084 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9318181818181818 [2022-04-18 15:50:37,084 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1066 transitions. [2022-04-18 15:50:37,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1066 transitions. [2022-04-18 15:50:37,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:37,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1066 transitions. [2022-04-18 15:50:37,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 533.0) internal successors, (1066), 2 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,088 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 572.0) internal successors, (1716), 3 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,088 INFO L186 Difference]: Start difference. First operand has 504 places, 572 transitions, 1174 flow. Second operand 2 states and 1066 transitions. [2022-04-18 15:50:37,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 505 transitions, 1052 flow [2022-04-18 15:50:37,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 505 transitions, 1052 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:37,093 INFO L242 Difference]: Finished difference. Result has 500 places, 505 transitions, 1040 flow [2022-04-18 15:50:37,093 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1040, PETRI_PLACES=500, PETRI_TRANSITIONS=505} [2022-04-18 15:50:37,094 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, -4 predicate places. [2022-04-18 15:50:37,094 INFO L478 AbstractCegarLoop]: Abstraction has has 500 places, 505 transitions, 1040 flow [2022-04-18 15:50:37,094 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 500.0) internal successors, (1000), 2 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,094 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:37,094 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:37,094 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-04-18 15:50:37,094 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash 207046708, now seen corresponding path program 1 times [2022-04-18 15:50:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:37,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540928727] [2022-04-18 15:50:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:37,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:37,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540928727] [2022-04-18 15:50:37,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540928727] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:37,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:37,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:50:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469859358] [2022-04-18 15:50:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:37,110 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:37,112 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-04-18 15:50:37,113 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 505 transitions, 1040 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,113 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:37,113 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-04-18 15:50:37,113 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:37,347 INFO L129 PetriNetUnfolder]: 27/1164 cut-off events. [2022-04-18 15:50:37,348 INFO L130 PetriNetUnfolder]: For 49/49 co-relation queries the response was YES. [2022-04-18 15:50:37,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 1164 events. 27/1164 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7584 event pairs, 1 based on Foata normal form. 0/1059 useless extension candidates. Maximal degree in co-relation 1214. Up to 23 conditions per place. [2022-04-18 15:50:37,378 INFO L132 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/509 dead transitions. [2022-04-18 15:50:37,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 509 transitions, 1082 flow [2022-04-18 15:50:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-04-18 15:50:37,380 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-04-18 15:50:37,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-04-18 15:50:37,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-04-18 15:50:37,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:37,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-04-18 15:50:37,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,384 INFO L186 Difference]: Start difference. First operand has 500 places, 505 transitions, 1040 flow. Second operand 3 states and 1494 transitions. [2022-04-18 15:50:37,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 509 transitions, 1082 flow [2022-04-18 15:50:37,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 509 transitions, 1082 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:50:37,390 INFO L242 Difference]: Finished difference. Result has 503 places, 506 transitions, 1052 flow [2022-04-18 15:50:37,391 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1052, PETRI_PLACES=503, PETRI_TRANSITIONS=506} [2022-04-18 15:50:37,391 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, -1 predicate places. [2022-04-18 15:50:37,391 INFO L478 AbstractCegarLoop]: Abstraction has has 503 places, 506 transitions, 1052 flow [2022-04-18 15:50:37,391 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:37,392 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:37,392 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-04-18 15:50:37,392 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:37,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:37,392 INFO L85 PathProgramCache]: Analyzing trace with hash 322414749, now seen corresponding path program 1 times [2022-04-18 15:50:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:37,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804555066] [2022-04-18 15:50:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:37,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:37,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:37,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804555066] [2022-04-18 15:50:37,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804555066] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:37,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658798927] [2022-04-18 15:50:37,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:37,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:37,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:37,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-18 15:50:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:37,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 15:50:37,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 15:50:37,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:50:37,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658798927] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:37,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:50:37,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-04-18 15:50:37,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970277838] [2022-04-18 15:50:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:37,548 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:37,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:37,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:50:37,549 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 492 out of 572 [2022-04-18 15:50:37,550 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 506 transitions, 1052 flow. Second operand has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,550 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:37,550 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 492 of 572 [2022-04-18 15:50:37,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:37,718 INFO L129 PetriNetUnfolder]: 23/999 cut-off events. [2022-04-18 15:50:37,719 INFO L130 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-04-18 15:50:37,743 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 999 events. 23/999 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6100 event pairs, 1 based on Foata normal form. 0/911 useless extension candidates. Maximal degree in co-relation 1062. Up to 30 conditions per place. [2022-04-18 15:50:37,748 INFO L132 encePairwiseOnDemand]: 569/572 looper letters, 15 selfloop transitions, 2 changer transitions 0/510 dead transitions. [2022-04-18 15:50:37,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 510 transitions, 1094 flow [2022-04-18 15:50:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:37,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-04-18 15:50:37,750 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8706293706293706 [2022-04-18 15:50:37,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-04-18 15:50:37,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-04-18 15:50:37,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:37,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-04-18 15:50:37,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 572.0) internal successors, (2288), 4 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,754 INFO L186 Difference]: Start difference. First operand has 503 places, 506 transitions, 1052 flow. Second operand 3 states and 1494 transitions. [2022-04-18 15:50:37,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 510 transitions, 1094 flow [2022-04-18 15:50:37,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 510 transitions, 1092 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:37,760 INFO L242 Difference]: Finished difference. Result has 505 places, 507 transitions, 1062 flow [2022-04-18 15:50:37,760 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1062, PETRI_PLACES=505, PETRI_TRANSITIONS=507} [2022-04-18 15:50:37,761 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, 1 predicate places. [2022-04-18 15:50:37,761 INFO L478 AbstractCegarLoop]: Abstraction has has 505 places, 507 transitions, 1062 flow [2022-04-18 15:50:37,761 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 493.0) internal successors, (1479), 3 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:37,761 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:37,761 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:37,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-18 15:50:37,978 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-18 15:50:37,978 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:37,979 INFO L85 PathProgramCache]: Analyzing trace with hash 775634102, now seen corresponding path program 1 times [2022-04-18 15:50:37,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:37,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882538101] [2022-04-18 15:50:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:37,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:38,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:38,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882538101] [2022-04-18 15:50:38,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882538101] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:38,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386687210] [2022-04-18 15:50:38,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:38,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:38,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:38,007 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:38,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-18 15:50:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:50:38,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:38,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:38,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:50:38,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:38,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386687210] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:50:38,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 15:50:38,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 15:50:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104186636] [2022-04-18 15:50:38,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 15:50:38,241 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 15:50:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 15:50:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 15:50:38,243 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 491 out of 572 [2022-04-18 15:50:38,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 507 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:38,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 491 of 572 [2022-04-18 15:50:38,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:38,500 INFO L129 PetriNetUnfolder]: 23/1006 cut-off events. [2022-04-18 15:50:38,500 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-04-18 15:50:38,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 1006 events. 23/1006 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6113 event pairs, 1 based on Foata normal form. 2/923 useless extension candidates. Maximal degree in co-relation 1077. Up to 20 conditions per place. [2022-04-18 15:50:38,531 INFO L132 encePairwiseOnDemand]: 566/572 looper letters, 16 selfloop transitions, 9 changer transitions 0/517 dead transitions. [2022-04-18 15:50:38,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 517 transitions, 1134 flow [2022-04-18 15:50:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:50:38,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:50:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 4446 transitions. [2022-04-18 15:50:38,535 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8636363636363636 [2022-04-18 15:50:38,535 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 4446 transitions. [2022-04-18 15:50:38,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 4446 transitions. [2022-04-18 15:50:38,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:38,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 4446 transitions. [2022-04-18 15:50:38,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 494.0) internal successors, (4446), 9 states have internal predecessors, (4446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,544 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 572.0) internal successors, (5720), 10 states have internal predecessors, (5720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,544 INFO L186 Difference]: Start difference. First operand has 505 places, 507 transitions, 1062 flow. Second operand 9 states and 4446 transitions. [2022-04-18 15:50:38,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 517 transitions, 1134 flow [2022-04-18 15:50:38,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 517 transitions, 1132 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:38,550 INFO L242 Difference]: Finished difference. Result has 515 places, 513 transitions, 1110 flow [2022-04-18 15:50:38,551 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=572, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1110, PETRI_PLACES=515, PETRI_TRANSITIONS=513} [2022-04-18 15:50:38,551 INFO L335 CegarLoopForPetriNet]: 504 programPoint places, 11 predicate places. [2022-04-18 15:50:38,552 INFO L478 AbstractCegarLoop]: Abstraction has has 515 places, 513 transitions, 1110 flow [2022-04-18 15:50:38,552 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 493.1) internal successors, (4931), 10 states have internal predecessors, (4931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:38,552 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:38,552 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:38,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-18 15:50:38,767 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-18 15:50:38,767 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2022-04-18 15:50:38,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash 554692374, now seen corresponding path program 2 times [2022-04-18 15:50:38,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:38,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717322285] [2022-04-18 15:50:38,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:38,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:38,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:38,844 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:38,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:38,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717322285] [2022-04-18 15:50:38,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717322285] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 15:50:38,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827186264] [2022-04-18 15:50:38,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:50:38,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:50:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:50:38,846 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:50:38,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-18 15:50:38,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 15:50:38,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:50:38,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:50:38,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:50:39,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-04-18 15:50:39,064 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 15:50:39,064 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:50:39,103 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 15:50:39,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:50:39,149 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 15:50:39,150 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:50:39,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-18 15:50:39,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:50:39,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827186264] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:39,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 15:50:39,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-04-18 15:50:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511405638] [2022-04-18 15:50:39,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:39,174 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:50:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:50:39,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-18 15:50:39,176 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 572 [2022-04-18 15:50:39,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 513 transitions, 1110 flow. Second operand has 6 states, 6 states have (on average 335.6666666666667) internal successors, (2014), 6 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:39,177 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:39,177 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 572 [2022-04-18 15:50:39,177 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand