./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.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 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 17:31:03,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 17:31:03,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 17:31:03,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 17:31:03,137 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 17:31:03,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 17:31:03,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 17:31:03,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 17:31:03,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 17:31:03,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 17:31:03,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 17:31:03,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 17:31:03,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 17:31:03,155 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 17:31:03,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 17:31:03,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 17:31:03,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 17:31:03,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 17:31:03,165 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 17:31:03,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 17:31:03,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 17:31:03,170 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 17:31:03,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 17:31:03,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 17:31:03,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 17:31:03,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 17:31:03,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 17:31:03,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 17:31:03,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 17:31:03,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 17:31:03,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 17:31:03,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 17:31:03,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 17:31:03,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 17:31:03,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 17:31:03,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 17:31:03,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 17:31:03,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 17:31:03,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 17:31:03,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 17:31:03,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 17:31:03,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 17:31:03,233 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 17:31:03,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 17:31:03,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 17:31:03,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 17:31:03,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 17:31:03,236 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 17:31:03,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 17:31:03,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 17:31:03,237 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 17:31:03,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 17:31:03,238 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 17:31:03,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 17:31:03,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 17:31:03,238 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 17:31:03,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 17:31:03,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 17:31:03,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 17:31:03,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 17:31:03,239 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 17:31:03,240 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 17:31:03,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 17:31:03,240 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 17:31:03,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 17:31:03,240 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 17:31:03,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 17:31:03,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 17:31:03,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:31:03,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 17:31:03,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 17:31:03,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 17:31:03,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 17:31:03,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 17:31:03,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 17:31:03,242 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 17:31:03,243 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 17:31:03,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 17:31:03,243 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 17:31:03,243 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d853145e48ada6aa212af657ef21b1dd6bc82cb156511f71c23f87b45f2510e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 17:31:03,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 17:31:03,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 17:31:03,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 17:31:03,556 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 17:31:03,556 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 17:31:03,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-08-29 17:31:04,631 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 17:31:04,893 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 17:31:04,894 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_04-funloop_hard1.i [2023-08-29 17:31:04,922 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55d1fe7d/de2eacc513744ed8b3dcda28cd4e6569/FLAGdbd6577e9 [2023-08-29 17:31:04,941 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55d1fe7d/de2eacc513744ed8b3dcda28cd4e6569 [2023-08-29 17:31:04,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 17:31:04,945 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 17:31:04,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 17:31:04,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 17:31:04,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 17:31:04,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:31:04" (1/1) ... [2023-08-29 17:31:04,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d4dfd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:04, skipping insertion in model container [2023-08-29 17:31:04,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:31:04" (1/1) ... [2023-08-29 17:31:04,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 17:31:05,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 17:31:05,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:31:05,439 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 17:31:05,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:31:05,577 INFO L208 MainTranslator]: Completed translation [2023-08-29 17:31:05,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05 WrapperNode [2023-08-29 17:31:05,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 17:31:05,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 17:31:05,579 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 17:31:05,579 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 17:31:05,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,654 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-08-29 17:31:05,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 17:31:05,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 17:31:05,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 17:31:05,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 17:31:05,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 17:31:05,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 17:31:05,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 17:31:05,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 17:31:05,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:31:05,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:05,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 17:31:05,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 17:31:05,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 17:31:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 17:31:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 17:31:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 17:31:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 17:31:05,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 17:31:05,791 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 17:31:05,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 17:31:05,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 17:31:05,792 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 17:31:05,941 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 17:31:05,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 17:31:06,167 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 17:31:06,174 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 17:31:06,175 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-29 17:31:06,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:31:06 BoogieIcfgContainer [2023-08-29 17:31:06,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 17:31:06,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 17:31:06,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 17:31:06,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 17:31:06,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:31:04" (1/3) ... [2023-08-29 17:31:06,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bb70ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:31:06, skipping insertion in model container [2023-08-29 17:31:06,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (2/3) ... [2023-08-29 17:31:06,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35bb70ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:31:06, skipping insertion in model container [2023-08-29 17:31:06,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:31:06" (3/3) ... [2023-08-29 17:31:06,195 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_04-funloop_hard1.i [2023-08-29 17:31:06,202 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 17:31:06,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 17:31:06,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 17:31:06,212 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 17:31:06,297 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 17:31:06,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 122 transitions, 249 flow [2023-08-29 17:31:06,432 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-29 17:31:06,433 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:06,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 6/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-29 17:31:06,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 122 transitions, 249 flow [2023-08-29 17:31:06,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 17:31:06,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,508 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-29 17:31:06,508 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:06,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 6/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-29 17:31:06,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 4588 [2023-08-29 17:31:08,027 INFO L134 LiptonReduction]: Checked pairs total: 14013 [2023-08-29 17:31:08,028 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-29 17:31:08,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 17:31:08,045 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@150882e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 17:31:08,046 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-29 17:31:08,052 INFO L130 PetriNetUnfolder]: 1/25 cut-off events. [2023-08-29 17:31:08,052 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:08,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:08,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:08,053 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:08,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1699604442, now seen corresponding path program 1 times [2023-08-29 17:31:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:08,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015399750] [2023-08-29 17:31:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:08,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:08,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015399750] [2023-08-29 17:31:08,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015399750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:08,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:08,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 17:31:08,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733365678] [2023-08-29 17:31:08,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:08,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 17:31:08,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:08,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 17:31:08,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 17:31:08,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 191 [2023-08-29 17:31:08,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:08,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 191 [2023-08-29 17:31:08,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:08,381 INFO L130 PetriNetUnfolder]: 106/409 cut-off events. [2023-08-29 17:31:08,381 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:08,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2223 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2023-08-29 17:31:08,385 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-29 17:31:08,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2023-08-29 17:31:08,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 17:31:08,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 17:31:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-29 17:31:08,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.643979057591623 [2023-08-29 17:31:08,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-29 17:31:08,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-29 17:31:08,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:08,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-29 17:31:08,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,411 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,413 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 369 transitions. [2023-08-29 17:31:08,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2023-08-29 17:31:08,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:08,418 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2023-08-29 17:31:08,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-29 17:31:08,423 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-29 17:31:08,423 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2023-08-29 17:31:08,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:08,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:08,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 17:31:08,424 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:08,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1558654883, now seen corresponding path program 1 times [2023-08-29 17:31:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:08,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096769538] [2023-08-29 17:31:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:08,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:08,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:08,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096769538] [2023-08-29 17:31:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096769538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:08,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974326597] [2023-08-29 17:31:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:08,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:08,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:08,551 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:08,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 17:31:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:08,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 17:31:08,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:08,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:08,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974326597] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:08,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:08,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 17:31:08,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736593606] [2023-08-29 17:31:08,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:08,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 17:31:08,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:08,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 17:31:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 17:31:08,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 191 [2023-08-29 17:31:08,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:08,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 191 [2023-08-29 17:31:08,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:08,899 INFO L130 PetriNetUnfolder]: 106/412 cut-off events. [2023-08-29 17:31:08,900 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:08,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 412 events. 106/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2237 event pairs, 84 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 631. Up to 213 conditions per place. [2023-08-29 17:31:08,904 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 24 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-29 17:31:08,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 194 flow [2023-08-29 17:31:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:08,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-08-29 17:31:08,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195462478184991 [2023-08-29 17:31:08,911 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-08-29 17:31:08,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-08-29 17:31:08,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:08,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-08-29 17:31:08,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,919 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,919 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 6 states and 710 transitions. [2023-08-29 17:31:08,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 194 flow [2023-08-29 17:31:08,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:08,921 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 156 flow [2023-08-29 17:31:08,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-29 17:31:08,922 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2023-08-29 17:31:08,923 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 156 flow [2023-08-29 17:31:08,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:08,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:08,927 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:08,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:09,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:09,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:09,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:09,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1832123143, now seen corresponding path program 2 times [2023-08-29 17:31:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:09,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700855034] [2023-08-29 17:31:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:09,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:09,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:09,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:09,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700855034] [2023-08-29 17:31:09,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700855034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:09,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563754770] [2023-08-29 17:31:09,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:31:09,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:09,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:09,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 17:31:09,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:31:09,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:09,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-29 17:31:09,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:09,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:31:09,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:09,557 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:31:09,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:09,599 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:31:09,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:09,624 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 17:31:09,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:09,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563754770] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:09,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:09,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-29 17:31:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496665912] [2023-08-29 17:31:09,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:31:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:31:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-29 17:31:09,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 191 [2023-08-29 17:31:09,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:09,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:09,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 191 [2023-08-29 17:31:09,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:10,484 INFO L130 PetriNetUnfolder]: 691/1606 cut-off events. [2023-08-29 17:31:10,485 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 17:31:10,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 1606 events. 691/1606 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8354 event pairs, 293 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2986. Up to 632 conditions per place. [2023-08-29 17:31:10,492 INFO L137 encePairwiseOnDemand]: 175/191 looper letters, 135 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2023-08-29 17:31:10,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 175 transitions, 712 flow [2023-08-29 17:31:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:31:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:31:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1070 transitions. [2023-08-29 17:31:10,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602094240837696 [2023-08-29 17:31:10,495 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1070 transitions. [2023-08-29 17:31:10,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1070 transitions. [2023-08-29 17:31:10,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:10,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1070 transitions. [2023-08-29 17:31:10,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:10,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:10,501 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:10,502 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 156 flow. Second operand 10 states and 1070 transitions. [2023-08-29 17:31:10,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 175 transitions, 712 flow [2023-08-29 17:31:10,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 175 transitions, 698 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:10,505 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 346 flow [2023-08-29 17:31:10,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-08-29 17:31:10,506 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-08-29 17:31:10,506 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 346 flow [2023-08-29 17:31:10,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:10,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:10,507 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:10,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-29 17:31:10,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-29 17:31:10,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:10,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1600781437, now seen corresponding path program 1 times [2023-08-29 17:31:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410789566] [2023-08-29 17:31:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:10,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:10,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:10,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410789566] [2023-08-29 17:31:10,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410789566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:10,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928218234] [2023-08-29 17:31:10,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:10,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:10,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:10,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:10,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 17:31:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:10,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 17:31:10,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:10,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:10,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928218234] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:10,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:10,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 17:31:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249866052] [2023-08-29 17:31:10,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:10,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 17:31:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:10,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 17:31:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 17:31:11,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 191 [2023-08-29 17:31:11,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 114.38461538461539) internal successors, (1487), 13 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:11,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:11,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 191 [2023-08-29 17:31:11,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:11,189 INFO L130 PetriNetUnfolder]: 305/1118 cut-off events. [2023-08-29 17:31:11,189 INFO L131 PetriNetUnfolder]: For 363/366 co-relation queries the response was YES. [2023-08-29 17:31:11,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1118 events. 305/1118 cut-off events. For 363/366 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6570 event pairs, 207 based on Foata normal form. 6/1082 useless extension candidates. Maximal degree in co-relation 2296. Up to 545 conditions per place. [2023-08-29 17:31:11,196 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 28 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-29 17:31:11,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 460 flow [2023-08-29 17:31:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:31:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:31:11,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1397 transitions. [2023-08-29 17:31:11,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095113438045375 [2023-08-29 17:31:11,200 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1397 transitions. [2023-08-29 17:31:11,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1397 transitions. [2023-08-29 17:31:11,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:11,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1397 transitions. [2023-08-29 17:31:11,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.41666666666667) internal successors, (1397), 12 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:11,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:11,207 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:11,207 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 346 flow. Second operand 12 states and 1397 transitions. [2023-08-29 17:31:11,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 460 flow [2023-08-29 17:31:11,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:11,212 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 429 flow [2023-08-29 17:31:11,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-08-29 17:31:11,213 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-08-29 17:31:11,214 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 429 flow [2023-08-29 17:31:11,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.38461538461539) internal successors, (1487), 13 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:11,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:11,215 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:11,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:11,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:11,421 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:11,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492163, now seen corresponding path program 2 times [2023-08-29 17:31:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:11,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921903905] [2023-08-29 17:31:11,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:11,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:11,796 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:11,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:11,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921903905] [2023-08-29 17:31:11,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921903905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:11,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:11,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:11,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847291999] [2023-08-29 17:31:11,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:11,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:11,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:11,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:11,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:11,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 191 [2023-08-29 17:31:11,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:11,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:11,988 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 191 [2023-08-29 17:31:11,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:12,461 INFO L130 PetriNetUnfolder]: 977/2350 cut-off events. [2023-08-29 17:31:12,462 INFO L131 PetriNetUnfolder]: For 2167/2181 co-relation queries the response was YES. [2023-08-29 17:31:12,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5852 conditions, 2350 events. 977/2350 cut-off events. For 2167/2181 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13825 event pairs, 394 based on Foata normal form. 0/2258 useless extension candidates. Maximal degree in co-relation 5770. Up to 1488 conditions per place. [2023-08-29 17:31:12,478 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 127 selfloop transitions, 46 changer transitions 0/192 dead transitions. [2023-08-29 17:31:12,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 192 transitions, 1083 flow [2023-08-29 17:31:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:12,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-08-29 17:31:12,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195462478184991 [2023-08-29 17:31:12,481 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-08-29 17:31:12,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-08-29 17:31:12,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:12,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-08-29 17:31:12,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:12,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:12,485 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:12,485 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 429 flow. Second operand 6 states and 710 transitions. [2023-08-29 17:31:12,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 192 transitions, 1083 flow [2023-08-29 17:31:12,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 192 transitions, 1035 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-29 17:31:12,493 INFO L231 Difference]: Finished difference. Result has 100 places, 131 transitions, 709 flow [2023-08-29 17:31:12,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=100, PETRI_TRANSITIONS=131} [2023-08-29 17:31:12,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2023-08-29 17:31:12,494 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 131 transitions, 709 flow [2023-08-29 17:31:12,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:12,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:12,494 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:12,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 17:31:12,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:12,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:12,495 INFO L85 PathProgramCache]: Analyzing trace with hash -303030028, now seen corresponding path program 1 times [2023-08-29 17:31:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:12,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698624514] [2023-08-29 17:31:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:12,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:12,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:12,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698624514] [2023-08-29 17:31:12,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698624514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:12,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:12,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139078039] [2023-08-29 17:31:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:12,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:12,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:12,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:12,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:12,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 191 [2023-08-29 17:31:12,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 131 transitions, 709 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:12,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:12,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 191 [2023-08-29 17:31:12,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:13,620 INFO L130 PetriNetUnfolder]: 1617/3419 cut-off events. [2023-08-29 17:31:13,622 INFO L131 PetriNetUnfolder]: For 4656/4688 co-relation queries the response was YES. [2023-08-29 17:31:13,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10819 conditions, 3419 events. 1617/3419 cut-off events. For 4656/4688 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19474 event pairs, 555 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 10757. Up to 2681 conditions per place. [2023-08-29 17:31:13,646 INFO L137 encePairwiseOnDemand]: 168/191 looper letters, 170 selfloop transitions, 89 changer transitions 8/274 dead transitions. [2023-08-29 17:31:13,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 274 transitions, 1793 flow [2023-08-29 17:31:13,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:13,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 689 transitions. [2023-08-29 17:31:13,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6012216404886562 [2023-08-29 17:31:13,649 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 689 transitions. [2023-08-29 17:31:13,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 689 transitions. [2023-08-29 17:31:13,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:13,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 689 transitions. [2023-08-29 17:31:13,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:13,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:13,653 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:13,654 INFO L175 Difference]: Start difference. First operand has 100 places, 131 transitions, 709 flow. Second operand 6 states and 689 transitions. [2023-08-29 17:31:13,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 274 transitions, 1793 flow [2023-08-29 17:31:13,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 274 transitions, 1793 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:13,667 INFO L231 Difference]: Finished difference. Result has 110 places, 214 transitions, 1483 flow [2023-08-29 17:31:13,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1483, PETRI_PLACES=110, PETRI_TRANSITIONS=214} [2023-08-29 17:31:13,668 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2023-08-29 17:31:13,669 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 214 transitions, 1483 flow [2023-08-29 17:31:13,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:13,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:13,669 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:13,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 17:31:13,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:13,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:13,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1952290432, now seen corresponding path program 1 times [2023-08-29 17:31:13,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:13,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088869906] [2023-08-29 17:31:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:13,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:13,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:13,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088869906] [2023-08-29 17:31:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088869906] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:13,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:13,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:13,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101235332] [2023-08-29 17:31:13,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:13,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:13,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:14,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 191 [2023-08-29 17:31:14,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 214 transitions, 1483 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:14,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:14,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 191 [2023-08-29 17:31:14,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:14,781 INFO L130 PetriNetUnfolder]: 1832/3823 cut-off events. [2023-08-29 17:31:14,782 INFO L131 PetriNetUnfolder]: For 9634/9714 co-relation queries the response was YES. [2023-08-29 17:31:14,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14678 conditions, 3823 events. 1832/3823 cut-off events. For 9634/9714 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 22002 event pairs, 612 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 14611. Up to 3283 conditions per place. [2023-08-29 17:31:14,815 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 229 selfloop transitions, 72 changer transitions 0/306 dead transitions. [2023-08-29 17:31:14,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 306 transitions, 2704 flow [2023-08-29 17:31:14,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:14,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:14,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 642 transitions. [2023-08-29 17:31:14,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602094240837696 [2023-08-29 17:31:14,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 642 transitions. [2023-08-29 17:31:14,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 642 transitions. [2023-08-29 17:31:14,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:14,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 642 transitions. [2023-08-29 17:31:14,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:14,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:14,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:14,822 INFO L175 Difference]: Start difference. First operand has 110 places, 214 transitions, 1483 flow. Second operand 6 states and 642 transitions. [2023-08-29 17:31:14,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 306 transitions, 2704 flow [2023-08-29 17:31:14,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 306 transitions, 2572 flow, removed 66 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:14,845 INFO L231 Difference]: Finished difference. Result has 120 places, 268 transitions, 2178 flow [2023-08-29 17:31:14,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=120, PETRI_TRANSITIONS=268} [2023-08-29 17:31:14,846 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2023-08-29 17:31:14,846 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 268 transitions, 2178 flow [2023-08-29 17:31:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:14,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:14,847 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:14,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 17:31:14,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:14,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash 422815756, now seen corresponding path program 1 times [2023-08-29 17:31:14,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732255227] [2023-08-29 17:31:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:14,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:15,320 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:15,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732255227] [2023-08-29 17:31:15,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732255227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146975637] [2023-08-29 17:31:15,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:15,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:15,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:15,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:15,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 17:31:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:15,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:15,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:15,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-29 17:31:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:15,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:15,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146975637] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:15,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:15,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:15,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820442465] [2023-08-29 17:31:15,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:15,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:15,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:15,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-29 17:31:15,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:15,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 268 transitions, 2178 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:15,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:15,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:15,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:16,650 INFO L130 PetriNetUnfolder]: 2389/6029 cut-off events. [2023-08-29 17:31:16,651 INFO L131 PetriNetUnfolder]: For 18507/18746 co-relation queries the response was YES. [2023-08-29 17:31:16,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23061 conditions, 6029 events. 2389/6029 cut-off events. For 18507/18746 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 44900 event pairs, 342 based on Foata normal form. 23/5928 useless extension candidates. Maximal degree in co-relation 22989. Up to 1652 conditions per place. [2023-08-29 17:31:16,712 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 129 selfloop transitions, 12 changer transitions 0/348 dead transitions. [2023-08-29 17:31:16,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 348 transitions, 3083 flow [2023-08-29 17:31:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 696 transitions. [2023-08-29 17:31:16,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073298429319371 [2023-08-29 17:31:16,715 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 696 transitions. [2023-08-29 17:31:16,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 696 transitions. [2023-08-29 17:31:16,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:16,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 696 transitions. [2023-08-29 17:31:16,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:16,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:16,719 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:16,719 INFO L175 Difference]: Start difference. First operand has 120 places, 268 transitions, 2178 flow. Second operand 6 states and 696 transitions. [2023-08-29 17:31:16,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 348 transitions, 3083 flow [2023-08-29 17:31:16,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 348 transitions, 2881 flow, removed 101 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:16,789 INFO L231 Difference]: Finished difference. Result has 128 places, 278 transitions, 2095 flow [2023-08-29 17:31:16,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=128, PETRI_TRANSITIONS=278} [2023-08-29 17:31:16,792 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2023-08-29 17:31:16,792 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 278 transitions, 2095 flow [2023-08-29 17:31:16,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:16,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:16,793 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:16,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:17,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:17,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:17,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1743318624, now seen corresponding path program 2 times [2023-08-29 17:31:17,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:17,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873472784] [2023-08-29 17:31:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:17,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:17,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:17,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873472784] [2023-08-29 17:31:17,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873472784] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:17,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745077635] [2023-08-29 17:31:17,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:31:17,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:17,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:17,532 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) [2023-08-29 17:31:17,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 17:31:17,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:31:17,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:17,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:17,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:17,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-29 17:31:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:17,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745077635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:17,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102684267] [2023-08-29 17:31:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:17,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:17,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:17,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-29 17:31:17,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:17,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 278 transitions, 2095 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:17,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:17,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:18,943 INFO L130 PetriNetUnfolder]: 2681/6686 cut-off events. [2023-08-29 17:31:18,943 INFO L131 PetriNetUnfolder]: For 18610/18859 co-relation queries the response was YES. [2023-08-29 17:31:18,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25962 conditions, 6686 events. 2681/6686 cut-off events. For 18610/18859 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 51069 event pairs, 383 based on Foata normal form. 31/6628 useless extension candidates. Maximal degree in co-relation 25885. Up to 1878 conditions per place. [2023-08-29 17:31:19,009 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 116 selfloop transitions, 19 changer transitions 0/342 dead transitions. [2023-08-29 17:31:19,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 342 transitions, 2888 flow [2023-08-29 17:31:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:19,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 688 transitions. [2023-08-29 17:31:19,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003490401396161 [2023-08-29 17:31:19,012 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 688 transitions. [2023-08-29 17:31:19,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 688 transitions. [2023-08-29 17:31:19,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:19,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 688 transitions. [2023-08-29 17:31:19,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:19,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:19,017 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:19,017 INFO L175 Difference]: Start difference. First operand has 128 places, 278 transitions, 2095 flow. Second operand 6 states and 688 transitions. [2023-08-29 17:31:19,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 342 transitions, 2888 flow [2023-08-29 17:31:19,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 342 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:19,077 INFO L231 Difference]: Finished difference. Result has 134 places, 287 transitions, 2236 flow [2023-08-29 17:31:19,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2236, PETRI_PLACES=134, PETRI_TRANSITIONS=287} [2023-08-29 17:31:19,079 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2023-08-29 17:31:19,079 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 287 transitions, 2236 flow [2023-08-29 17:31:19,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:19,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:19,080 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:19,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:19,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:19,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:19,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash -275928975, now seen corresponding path program 1 times [2023-08-29 17:31:19,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:19,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2852709] [2023-08-29 17:31:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:19,621 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:19,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:19,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2852709] [2023-08-29 17:31:19,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2852709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263467337] [2023-08-29 17:31:19,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:19,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:19,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:19,623 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) [2023-08-29 17:31:19,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 17:31:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:19,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:19,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:19,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-29 17:31:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:19,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:19,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263467337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:19,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:19,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:19,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350590518] [2023-08-29 17:31:19,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:19,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:19,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:19,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:19,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-29 17:31:19,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:19,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 287 transitions, 2236 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:19,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:19,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:19,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:20,988 INFO L130 PetriNetUnfolder]: 2367/6020 cut-off events. [2023-08-29 17:31:20,988 INFO L131 PetriNetUnfolder]: For 18090/18296 co-relation queries the response was YES. [2023-08-29 17:31:21,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23786 conditions, 6020 events. 2367/6020 cut-off events. For 18090/18296 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 45566 event pairs, 380 based on Foata normal form. 25/5969 useless extension candidates. Maximal degree in co-relation 23706. Up to 1708 conditions per place. [2023-08-29 17:31:21,049 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 118 selfloop transitions, 22 changer transitions 0/347 dead transitions. [2023-08-29 17:31:21,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 347 transitions, 3001 flow [2023-08-29 17:31:21,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 17:31:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 17:31:21,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2023-08-29 17:31:21,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5991024682124159 [2023-08-29 17:31:21,052 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2023-08-29 17:31:21,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2023-08-29 17:31:21,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:21,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2023-08-29 17:31:21,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:21,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:21,057 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:21,057 INFO L175 Difference]: Start difference. First operand has 134 places, 287 transitions, 2236 flow. Second operand 7 states and 801 transitions. [2023-08-29 17:31:21,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 347 transitions, 3001 flow [2023-08-29 17:31:21,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 347 transitions, 2987 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 17:31:21,109 INFO L231 Difference]: Finished difference. Result has 141 places, 290 transitions, 2326 flow [2023-08-29 17:31:21,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2326, PETRI_PLACES=141, PETRI_TRANSITIONS=290} [2023-08-29 17:31:21,111 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2023-08-29 17:31:21,111 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 290 transitions, 2326 flow [2023-08-29 17:31:21,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:21,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:21,113 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:21,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:21,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:21,321 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:21,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1455599038, now seen corresponding path program 3 times [2023-08-29 17:31:21,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:21,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834064460] [2023-08-29 17:31:21,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:21,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:21,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:21,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834064460] [2023-08-29 17:31:21,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834064460] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432842055] [2023-08-29 17:31:21,730 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:31:21,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:21,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:21,731 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) [2023-08-29 17:31:21,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 17:31:21,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 17:31:21,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:21,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:21,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:21,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-29 17:31:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:21,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432842055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:21,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:21,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:21,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745079134] [2023-08-29 17:31:21,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:21,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:21,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:21,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:21,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-29 17:31:22,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:22,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 290 transitions, 2326 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:22,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:22,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:22,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:22,934 INFO L130 PetriNetUnfolder]: 2450/6272 cut-off events. [2023-08-29 17:31:22,934 INFO L131 PetriNetUnfolder]: For 21097/21338 co-relation queries the response was YES. [2023-08-29 17:31:22,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25206 conditions, 6272 events. 2450/6272 cut-off events. For 21097/21338 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 50436 event pairs, 286 based on Foata normal form. 12/6191 useless extension candidates. Maximal degree in co-relation 25123. Up to 1680 conditions per place. [2023-08-29 17:31:23,002 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 130 selfloop transitions, 17 changer transitions 0/354 dead transitions. [2023-08-29 17:31:23,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 354 transitions, 3014 flow [2023-08-29 17:31:23,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:23,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2023-08-29 17:31:23,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090750436300174 [2023-08-29 17:31:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 698 transitions. [2023-08-29 17:31:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 698 transitions. [2023-08-29 17:31:23,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:23,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 698 transitions. [2023-08-29 17:31:23,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:23,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:23,009 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:23,010 INFO L175 Difference]: Start difference. First operand has 141 places, 290 transitions, 2326 flow. Second operand 6 states and 698 transitions. [2023-08-29 17:31:23,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 354 transitions, 3014 flow [2023-08-29 17:31:23,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 354 transitions, 2974 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 17:31:23,085 INFO L231 Difference]: Finished difference. Result has 145 places, 293 transitions, 2370 flow [2023-08-29 17:31:23,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2370, PETRI_PLACES=145, PETRI_TRANSITIONS=293} [2023-08-29 17:31:23,086 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2023-08-29 17:31:23,086 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 293 transitions, 2370 flow [2023-08-29 17:31:23,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:23,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:23,087 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:23,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-29 17:31:23,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:23,292 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:23,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1142554823, now seen corresponding path program 1 times [2023-08-29 17:31:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832391710] [2023-08-29 17:31:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:23,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:23,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-08-29 17:31:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:23,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832391710] [2023-08-29 17:31:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832391710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:23,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:23,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925807124] [2023-08-29 17:31:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:23,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:23,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 191 [2023-08-29 17:31:23,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 293 transitions, 2370 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:23,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:23,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 191 [2023-08-29 17:31:23,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:24,906 INFO L130 PetriNetUnfolder]: 3421/7652 cut-off events. [2023-08-29 17:31:24,907 INFO L131 PetriNetUnfolder]: For 32130/32315 co-relation queries the response was YES. [2023-08-29 17:31:24,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34592 conditions, 7652 events. 3421/7652 cut-off events. For 32130/32315 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 57241 event pairs, 770 based on Foata normal form. 71/7693 useless extension candidates. Maximal degree in co-relation 34507. Up to 5537 conditions per place. [2023-08-29 17:31:24,989 INFO L137 encePairwiseOnDemand]: 180/191 looper letters, 271 selfloop transitions, 84 changer transitions 0/406 dead transitions. [2023-08-29 17:31:24,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 406 transitions, 4302 flow [2023-08-29 17:31:24,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:24,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2023-08-29 17:31:24,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5924956369982548 [2023-08-29 17:31:24,992 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2023-08-29 17:31:24,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2023-08-29 17:31:24,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:24,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2023-08-29 17:31:24,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:24,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:24,996 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:24,996 INFO L175 Difference]: Start difference. First operand has 145 places, 293 transitions, 2370 flow. Second operand 6 states and 679 transitions. [2023-08-29 17:31:24,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 406 transitions, 4302 flow [2023-08-29 17:31:25,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 406 transitions, 4232 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-29 17:31:25,085 INFO L231 Difference]: Finished difference. Result has 153 places, 332 transitions, 3238 flow [2023-08-29 17:31:25,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3238, PETRI_PLACES=153, PETRI_TRANSITIONS=332} [2023-08-29 17:31:25,087 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2023-08-29 17:31:25,087 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 332 transitions, 3238 flow [2023-08-29 17:31:25,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:25,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:25,087 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:25,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 17:31:25,088 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:25,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:25,088 INFO L85 PathProgramCache]: Analyzing trace with hash 725617908, now seen corresponding path program 1 times [2023-08-29 17:31:25,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:25,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666025189] [2023-08-29 17:31:25,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:25,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:25,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:25,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666025189] [2023-08-29 17:31:25,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666025189] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:25,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077276783] [2023-08-29 17:31:25,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:25,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:25,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:25,153 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) [2023-08-29 17:31:25,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 17:31:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:25,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 17:31:25,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:25,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:25,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077276783] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:25,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:25,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-29 17:31:25,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357813684] [2023-08-29 17:31:25,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:25,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 17:31:25,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:25,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 17:31:25,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 17:31:25,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 191 [2023-08-29 17:31:25,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 332 transitions, 3238 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:25,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:25,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 191 [2023-08-29 17:31:25,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:26,971 INFO L130 PetriNetUnfolder]: 3935/9640 cut-off events. [2023-08-29 17:31:26,971 INFO L131 PetriNetUnfolder]: For 45601/46175 co-relation queries the response was YES. [2023-08-29 17:31:27,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44713 conditions, 9640 events. 3935/9640 cut-off events. For 45601/46175 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 73377 event pairs, 419 based on Foata normal form. 131/9678 useless extension candidates. Maximal degree in co-relation 44625. Up to 2700 conditions per place. [2023-08-29 17:31:27,087 INFO L137 encePairwiseOnDemand]: 187/191 looper letters, 195 selfloop transitions, 23 changer transitions 0/455 dead transitions. [2023-08-29 17:31:27,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 455 transitions, 4903 flow [2023-08-29 17:31:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:27,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:27,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2023-08-29 17:31:27,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553228621291448 [2023-08-29 17:31:27,090 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2023-08-29 17:31:27,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2023-08-29 17:31:27,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:27,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2023-08-29 17:31:27,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:27,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:27,094 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:27,095 INFO L175 Difference]: Start difference. First operand has 153 places, 332 transitions, 3238 flow. Second operand 6 states and 751 transitions. [2023-08-29 17:31:27,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 455 transitions, 4903 flow [2023-08-29 17:31:27,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 455 transitions, 4763 flow, removed 70 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:27,282 INFO L231 Difference]: Finished difference. Result has 162 places, 341 transitions, 3272 flow [2023-08-29 17:31:27,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3272, PETRI_PLACES=162, PETRI_TRANSITIONS=341} [2023-08-29 17:31:27,284 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2023-08-29 17:31:27,284 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 341 transitions, 3272 flow [2023-08-29 17:31:27,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:27,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:27,285 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:27,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:27,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-29 17:31:27,490 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:27,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash -492140983, now seen corresponding path program 1 times [2023-08-29 17:31:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:27,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524024915] [2023-08-29 17:31:27,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:27,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:28,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:28,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524024915] [2023-08-29 17:31:28,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524024915] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:28,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546355330] [2023-08-29 17:31:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:28,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:28,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:28,233 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) [2023-08-29 17:31:28,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 17:31:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:28,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-29 17:31:28,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:28,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:31:28,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:28,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:28,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:28,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:28,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:29,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546355330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:29,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:29,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-29 17:31:29,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314702577] [2023-08-29 17:31:29,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:29,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-29 17:31:29,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:29,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-29 17:31:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-29 17:31:32,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 191 [2023-08-29 17:31:32,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 341 transitions, 3272 flow. Second operand has 31 states, 31 states have (on average 87.54838709677419) internal successors, (2714), 31 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:32,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:32,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 191 [2023-08-29 17:31:32,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:35,816 INFO L130 PetriNetUnfolder]: 6142/13453 cut-off events. [2023-08-29 17:31:35,816 INFO L131 PetriNetUnfolder]: For 70420/70838 co-relation queries the response was YES. [2023-08-29 17:31:35,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68804 conditions, 13453 events. 6142/13453 cut-off events. For 70420/70838 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 100765 event pairs, 631 based on Foata normal form. 63/13474 useless extension candidates. Maximal degree in co-relation 68712. Up to 4627 conditions per place. [2023-08-29 17:31:35,943 INFO L137 encePairwiseOnDemand]: 173/191 looper letters, 736 selfloop transitions, 133 changer transitions 4/924 dead transitions. [2023-08-29 17:31:35,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 924 transitions, 10577 flow [2023-08-29 17:31:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 17:31:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 17:31:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1699 transitions. [2023-08-29 17:31:35,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232522328303049 [2023-08-29 17:31:35,954 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1699 transitions. [2023-08-29 17:31:35,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1699 transitions. [2023-08-29 17:31:35,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:35,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1699 transitions. [2023-08-29 17:31:35,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:35,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:35,981 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:35,981 INFO L175 Difference]: Start difference. First operand has 162 places, 341 transitions, 3272 flow. Second operand 17 states and 1699 transitions. [2023-08-29 17:31:35,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 924 transitions, 10577 flow [2023-08-29 17:31:36,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 924 transitions, 10559 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:36,141 INFO L231 Difference]: Finished difference. Result has 189 places, 441 transitions, 5151 flow [2023-08-29 17:31:36,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5151, PETRI_PLACES=189, PETRI_TRANSITIONS=441} [2023-08-29 17:31:36,141 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2023-08-29 17:31:36,141 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 441 transitions, 5151 flow [2023-08-29 17:31:36,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 87.54838709677419) internal successors, (2714), 31 states have internal predecessors, (2714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:36,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:36,143 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-29 17:31:36,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:36,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-29 17:31:36,343 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:36,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:36,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1866728547, now seen corresponding path program 1 times [2023-08-29 17:31:36,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146026648] [2023-08-29 17:31:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:36,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146026648] [2023-08-29 17:31:36,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146026648] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:36,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314838083] [2023-08-29 17:31:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:36,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:36,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:36,997 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) [2023-08-29 17:31:37,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 17:31:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:37,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-29 17:31:37,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:37,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:31:37,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:37,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:37,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:37,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:37,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:38,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314838083] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:38,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:38,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-29 17:31:38,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60331459] [2023-08-29 17:31:38,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:38,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-29 17:31:38,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:38,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-29 17:31:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-29 17:31:40,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2023-08-29 17:31:40,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 441 transitions, 5151 flow. Second operand has 31 states, 31 states have (on average 78.2258064516129) internal successors, (2425), 31 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:40,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:40,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2023-08-29 17:31:40,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:45,285 INFO L130 PetriNetUnfolder]: 9904/20673 cut-off events. [2023-08-29 17:31:45,285 INFO L131 PetriNetUnfolder]: For 127278/127575 co-relation queries the response was YES. [2023-08-29 17:31:45,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111399 conditions, 20673 events. 9904/20673 cut-off events. For 127278/127575 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 160851 event pairs, 1672 based on Foata normal form. 146/20799 useless extension candidates. Maximal degree in co-relation 111293. Up to 9654 conditions per place. [2023-08-29 17:31:45,575 INFO L137 encePairwiseOnDemand]: 162/191 looper letters, 1000 selfloop transitions, 171 changer transitions 14/1200 dead transitions. [2023-08-29 17:31:45,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1200 transitions, 14520 flow [2023-08-29 17:31:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 17:31:45,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 17:31:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1639 transitions. [2023-08-29 17:31:45,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047736372035725 [2023-08-29 17:31:45,579 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1639 transitions. [2023-08-29 17:31:45,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1639 transitions. [2023-08-29 17:31:45,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:45,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1639 transitions. [2023-08-29 17:31:45,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 96.41176470588235) internal successors, (1639), 17 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:45,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:45,587 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:45,587 INFO L175 Difference]: Start difference. First operand has 189 places, 441 transitions, 5151 flow. Second operand 17 states and 1639 transitions. [2023-08-29 17:31:45,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1200 transitions, 14520 flow [2023-08-29 17:31:46,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1200 transitions, 14465 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:46,064 INFO L231 Difference]: Finished difference. Result has 214 places, 578 transitions, 7629 flow [2023-08-29 17:31:46,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7629, PETRI_PLACES=214, PETRI_TRANSITIONS=578} [2023-08-29 17:31:46,065 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 158 predicate places. [2023-08-29 17:31:46,065 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 578 transitions, 7629 flow [2023-08-29 17:31:46,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 78.2258064516129) internal successors, (2425), 31 states have internal predecessors, (2425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:31:46,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:46,065 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:46,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:46,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 17:31:46,266 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:46,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:46,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1267003643, now seen corresponding path program 2 times [2023-08-29 17:31:46,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:46,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982005550] [2023-08-29 17:31:46,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:46,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982005550] [2023-08-29 17:31:47,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982005550] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:47,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919595310] [2023-08-29 17:31:47,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:31:47,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:47,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:47,459 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:47,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 17:31:47,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 17:31:47,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:47,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-29 17:31:47,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:47,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:31:47,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:47,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:47,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:48,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:48,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:31:48,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:31:48,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:31:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:48,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:32:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:32:06,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919595310] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:32:06,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:32:06,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2023-08-29 17:32:06,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795028690] [2023-08-29 17:32:06,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:32:06,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 17:32:06,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:32:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 17:32:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=803, Unknown=4, NotChecked=0, Total=992 [2023-08-29 17:32:08,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:11,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:12,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:14,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:16,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:19,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:21,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:22,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:24,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:27,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:30,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:33,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:36,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:38,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:41,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:43,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:48,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:50,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:51,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-29 17:32:51,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 578 transitions, 7629 flow. Second operand has 32 states, 32 states have (on average 51.21875) internal successors, (1639), 32 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:32:51,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:32:51,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-29 17:32:51,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:33:02,807 INFO L130 PetriNetUnfolder]: 12533/25179 cut-off events. [2023-08-29 17:33:02,807 INFO L131 PetriNetUnfolder]: For 196818/196818 co-relation queries the response was YES. [2023-08-29 17:33:03,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146251 conditions, 25179 events. 12533/25179 cut-off events. For 196818/196818 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 195881 event pairs, 2155 based on Foata normal form. 20/24939 useless extension candidates. Maximal degree in co-relation 146134. Up to 11313 conditions per place. [2023-08-29 17:33:03,100 INFO L137 encePairwiseOnDemand]: 173/191 looper letters, 1056 selfloop transitions, 243 changer transitions 2/1301 dead transitions. [2023-08-29 17:33:03,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1301 transitions, 17862 flow [2023-08-29 17:33:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 17:33:03,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 17:33:03,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1096 transitions. [2023-08-29 17:33:03,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586387434554974 [2023-08-29 17:33:03,103 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1096 transitions. [2023-08-29 17:33:03,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1096 transitions. [2023-08-29 17:33:03,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:33:03,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1096 transitions. [2023-08-29 17:33:03,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.5) internal successors, (1096), 16 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:03,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:03,109 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:03,109 INFO L175 Difference]: Start difference. First operand has 214 places, 578 transitions, 7629 flow. Second operand 16 states and 1096 transitions. [2023-08-29 17:33:03,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1301 transitions, 17862 flow [2023-08-29 17:33:04,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1301 transitions, 17718 flow, removed 53 selfloop flow, removed 2 redundant places. [2023-08-29 17:33:04,216 INFO L231 Difference]: Finished difference. Result has 236 places, 691 transitions, 10485 flow [2023-08-29 17:33:04,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10485, PETRI_PLACES=236, PETRI_TRANSITIONS=691} [2023-08-29 17:33:04,217 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 180 predicate places. [2023-08-29 17:33:04,217 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 691 transitions, 10485 flow [2023-08-29 17:33:04,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 51.21875) internal successors, (1639), 32 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:04,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:33:04,218 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-29 17:33:04,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-29 17:33:04,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 17:33:04,418 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:33:04,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:33:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1683454459, now seen corresponding path program 2 times [2023-08-29 17:33:04,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:33:04,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673147115] [2023-08-29 17:33:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:33:04,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:33:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:33:05,045 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:05,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:33:05,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673147115] [2023-08-29 17:33:05,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673147115] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:33:05,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404661826] [2023-08-29 17:33:05,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:33:05,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:33:05,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:33:05,047 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:33:05,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-29 17:33:05,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 17:33:05,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:33:05,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-29 17:33:05,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:33:05,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:33:05,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:33:05,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:33:05,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:33:05,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:05,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:05,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:05,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:05,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:33:05,785 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:05,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:33:14,255 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:14,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404661826] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:33:14,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:33:14,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-29 17:33:14,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379706149] [2023-08-29 17:33:14,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:33:14,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-29 17:33:14,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:33:14,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-29 17:33:14,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=747, Unknown=1, NotChecked=0, Total=930 [2023-08-29 17:33:16,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:18,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:23,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:26,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:30,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:33,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:35,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:35,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-29 17:33:35,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 691 transitions, 10485 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:35,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:33:35,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-29 17:33:35,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:33:48,284 INFO L130 PetriNetUnfolder]: 16506/33147 cut-off events. [2023-08-29 17:33:48,284 INFO L131 PetriNetUnfolder]: For 295676/295676 co-relation queries the response was YES. [2023-08-29 17:33:48,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197333 conditions, 33147 events. 16506/33147 cut-off events. For 295676/295676 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 271729 event pairs, 3306 based on Foata normal form. 106/32860 useless extension candidates. Maximal degree in co-relation 197206. Up to 11696 conditions per place. [2023-08-29 17:33:48,826 INFO L137 encePairwiseOnDemand]: 162/191 looper letters, 1194 selfloop transitions, 286 changer transitions 16/1496 dead transitions. [2023-08-29 17:33:48,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1496 transitions, 21367 flow [2023-08-29 17:33:48,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 17:33:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 17:33:48,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1171 transitions. [2023-08-29 17:33:48,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831806282722513 [2023-08-29 17:33:48,828 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1171 transitions. [2023-08-29 17:33:48,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1171 transitions. [2023-08-29 17:33:48,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:33:48,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1171 transitions. [2023-08-29 17:33:48,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.1875) internal successors, (1171), 16 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:48,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:48,834 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:48,834 INFO L175 Difference]: Start difference. First operand has 236 places, 691 transitions, 10485 flow. Second operand 16 states and 1171 transitions. [2023-08-29 17:33:48,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1496 transitions, 21367 flow [2023-08-29 17:33:51,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1496 transitions, 21105 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-29 17:33:51,172 INFO L231 Difference]: Finished difference. Result has 256 places, 841 transitions, 13777 flow [2023-08-29 17:33:51,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13777, PETRI_PLACES=256, PETRI_TRANSITIONS=841} [2023-08-29 17:33:51,173 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 200 predicate places. [2023-08-29 17:33:51,173 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 841 transitions, 13777 flow [2023-08-29 17:33:51,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:33:51,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:33:51,174 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:33:51,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-29 17:33:51,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-29 17:33:51,380 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:33:51,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:33:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1668215551, now seen corresponding path program 3 times [2023-08-29 17:33:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:33:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805357042] [2023-08-29 17:33:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:33:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:33:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:33:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:52,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:33:52,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805357042] [2023-08-29 17:33:52,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805357042] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:33:52,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54362429] [2023-08-29 17:33:52,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:33:52,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:33:52,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:33:52,329 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:33:52,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-29 17:33:52,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 17:33:52,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:33:52,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-29 17:33:52,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:33:52,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:33:52,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:33:52,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:33:52,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:33:52,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:52,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:52,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:33:52,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:33:53,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:33:53,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:33:53,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:53,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:33:53,154 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:53,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:34:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:34:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54362429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:34:12,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:34:12,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-29 17:34:12,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15063886] [2023-08-29 17:34:12,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:34:12,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-29 17:34:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-29 17:34:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=871, Unknown=5, NotChecked=0, Total=1056 [2023-08-29 17:34:15,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:19,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:21,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:23,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:30,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:32,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:35,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:38,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:40,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:45,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:46,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:49,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:51,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:53,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:56,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:59,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:01,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:03,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:06,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:07,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:10,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:12,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:15,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:19,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:22,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:28,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:31,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:33,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:36,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:38,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:42,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:46,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:48,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:51,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:53,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:55,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:00,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:03,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:07,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:08,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:09,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:12,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:13,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:16,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:19,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:21,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:25,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:28,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:31,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:31,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-29 17:36:31,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 841 transitions, 13777 flow. Second operand has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:31,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:36:31,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-29 17:36:31,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:36:54,477 INFO L130 PetriNetUnfolder]: 24720/49674 cut-off events. [2023-08-29 17:36:54,477 INFO L131 PetriNetUnfolder]: For 520027/520027 co-relation queries the response was YES. [2023-08-29 17:36:55,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310681 conditions, 49674 events. 24720/49674 cut-off events. For 520027/520027 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 404122 event pairs, 5255 based on Foata normal form. 65/49136 useless extension candidates. Maximal degree in co-relation 310544. Up to 25024 conditions per place. [2023-08-29 17:36:55,440 INFO L137 encePairwiseOnDemand]: 172/191 looper letters, 2092 selfloop transitions, 466 changer transitions 0/2558 dead transitions. [2023-08-29 17:36:55,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 2558 transitions, 38592 flow [2023-08-29 17:36:55,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-29 17:36:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-29 17:36:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2043 transitions. [2023-08-29 17:36:55,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36883914063910456 [2023-08-29 17:36:55,443 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2043 transitions. [2023-08-29 17:36:55,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2043 transitions. [2023-08-29 17:36:55,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:36:55,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2043 transitions. [2023-08-29 17:36:55,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 70.44827586206897) internal successors, (2043), 29 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:55,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 191.0) internal successors, (5730), 30 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:55,453 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 191.0) internal successors, (5730), 30 states have internal predecessors, (5730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:55,453 INFO L175 Difference]: Start difference. First operand has 256 places, 841 transitions, 13777 flow. Second operand 29 states and 2043 transitions. [2023-08-29 17:36:55,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 2558 transitions, 38592 flow [2023-08-29 17:36:59,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 2558 transitions, 38112 flow, removed 173 selfloop flow, removed 4 redundant places. [2023-08-29 17:36:59,595 INFO L231 Difference]: Finished difference. Result has 301 places, 1136 transitions, 20912 flow [2023-08-29 17:36:59,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=13542, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20912, PETRI_PLACES=301, PETRI_TRANSITIONS=1136} [2023-08-29 17:36:59,596 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 245 predicate places. [2023-08-29 17:36:59,596 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 1136 transitions, 20912 flow [2023-08-29 17:36:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:36:59,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:36:59,597 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-29 17:36:59,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-29 17:36:59,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-29 17:36:59,803 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:36:59,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:36:59,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1715520455, now seen corresponding path program 3 times [2023-08-29 17:36:59,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:36:59,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225723217] [2023-08-29 17:36:59,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:36:59,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:36:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:00,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225723217] [2023-08-29 17:37:00,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225723217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:37:00,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447962536] [2023-08-29 17:37:00,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:37:00,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:00,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:37:00,465 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:37:00,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-29 17:37:00,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 17:37:00,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:37:00,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-29 17:37:00,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:37:00,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:37:00,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:37:00,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:37:01,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:37:01,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:01,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:01,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:01,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:01,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:37:01,214 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:01,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:37:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:12,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447962536] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:37:12,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:37:12,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-29 17:37:12,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339760776] [2023-08-29 17:37:12,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:37:12,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 17:37:12,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:12,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 17:37:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=808, Unknown=4, NotChecked=0, Total=992 [2023-08-29 17:37:15,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:17,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:20,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:23,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:26,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:28,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:30,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:32,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:34,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:36,444 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:38,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:41,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:43,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:45,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:48,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:50,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:52,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:54,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:56,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:58,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:01,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:04,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:06,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:06,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-29 17:38:06,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1136 transitions, 20912 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:06,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:06,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-29 17:38:06,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:38:38,984 INFO L130 PetriNetUnfolder]: 38233/76777 cut-off events. [2023-08-29 17:38:38,984 INFO L131 PetriNetUnfolder]: For 868991/868991 co-relation queries the response was YES. [2023-08-29 17:38:40,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499550 conditions, 76777 events. 38233/76777 cut-off events. For 868991/868991 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 685724 event pairs, 7576 based on Foata normal form. 108/75742 useless extension candidates. Maximal degree in co-relation 499392. Up to 26145 conditions per place. [2023-08-29 17:38:41,016 INFO L137 encePairwiseOnDemand]: 161/191 looper letters, 2947 selfloop transitions, 839 changer transitions 34/3820 dead transitions. [2023-08-29 17:38:41,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 3820 transitions, 60032 flow [2023-08-29 17:38:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-29 17:38:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-29 17:38:41,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2530 transitions. [2023-08-29 17:38:41,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013961605584642 [2023-08-29 17:38:41,020 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2530 transitions. [2023-08-29 17:38:41,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2530 transitions. [2023-08-29 17:38:41,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:38:41,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2530 transitions. [2023-08-29 17:38:41,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 76.66666666666667) internal successors, (2530), 33 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:41,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:41,030 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:41,030 INFO L175 Difference]: Start difference. First operand has 301 places, 1136 transitions, 20912 flow. Second operand 33 states and 2530 transitions. [2023-08-29 17:38:41,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 3820 transitions, 60032 flow [2023-08-29 17:38:53,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 3820 transitions, 59151 flow, removed 440 selfloop flow, removed 1 redundant places. [2023-08-29 17:38:53,620 INFO L231 Difference]: Finished difference. Result has 355 places, 1804 transitions, 35348 flow [2023-08-29 17:38:53,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=20365, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=35348, PETRI_PLACES=355, PETRI_TRANSITIONS=1804} [2023-08-29 17:38:53,622 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 299 predicate places. [2023-08-29 17:38:53,622 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 1804 transitions, 35348 flow [2023-08-29 17:38:53,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:38:53,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:38:53,622 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:38:53,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-29 17:38:53,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:53,828 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:38:53,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:38:53,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2095055811, now seen corresponding path program 4 times [2023-08-29 17:38:53,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:38:53,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409560218] [2023-08-29 17:38:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:38:53,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:38:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:38:54,831 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:38:54,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:38:54,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409560218] [2023-08-29 17:38:54,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409560218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:38:54,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462062986] [2023-08-29 17:38:54,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 17:38:54,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:38:54,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:38:54,837 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:38:54,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-29 17:38:55,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 17:38:55,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:38:55,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-29 17:38:55,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:38:55,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:38:55,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:38:55,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:38:55,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:38:55,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:38:55,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:38:55,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:38:55,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:38:55,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:38:55,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 84 [2023-08-29 17:39:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:03,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:39:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:22,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462062986] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:39:22,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:39:22,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 37 [2023-08-29 17:39:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336760783] [2023-08-29 17:39:22,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:39:22,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-29 17:39:22,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:39:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-29 17:39:22,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1179, Unknown=7, NotChecked=0, Total=1406 [2023-08-29 17:39:24,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:26,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:28,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:31,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:33,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:36,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:38,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:43,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:45,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:48,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:51,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:39:53,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:55,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:39:59,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:01,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:04,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:06,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:08,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:11,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:13,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:17,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:19,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:22,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:25,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:28,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:30,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:33,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:35,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:38,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:40,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:40,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-29 17:40:40,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 1804 transitions, 35348 flow. Second operand has 38 states, 38 states have (on average 50.71052631578947) internal successors, (1927), 38 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:40:40,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:40:40,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-29 17:40:40,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:40:50,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:52,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:55,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:57,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:59,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:05,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:07,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:10,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:14,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:16,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:19,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:42:11,052 INFO L130 PetriNetUnfolder]: 47797/96004 cut-off events. [2023-08-29 17:42:11,052 INFO L131 PetriNetUnfolder]: For 1466655/1466655 co-relation queries the response was YES. [2023-08-29 17:42:13,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683618 conditions, 96004 events. 47797/96004 cut-off events. For 1466655/1466655 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 874211 event pairs, 10284 based on Foata normal form. 65/94716 useless extension candidates. Maximal degree in co-relation 683436. Up to 34788 conditions per place. [2023-08-29 17:42:14,171 INFO L137 encePairwiseOnDemand]: 171/191 looper letters, 3107 selfloop transitions, 965 changer transitions 2/4074 dead transitions. [2023-08-29 17:42:14,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 4074 transitions, 77180 flow [2023-08-29 17:42:14,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-29 17:42:14,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-29 17:42:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2223 transitions. [2023-08-29 17:42:14,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637107329842932 [2023-08-29 17:42:14,174 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2223 transitions. [2023-08-29 17:42:14,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2223 transitions. [2023-08-29 17:42:14,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:42:14,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2223 transitions. [2023-08-29 17:42:14,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 69.46875) internal successors, (2223), 32 states have internal predecessors, (2223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:42:14,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 191.0) internal successors, (6303), 33 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:42:14,183 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 191.0) internal successors, (6303), 33 states have internal predecessors, (6303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:42:14,183 INFO L175 Difference]: Start difference. First operand has 355 places, 1804 transitions, 35348 flow. Second operand 32 states and 2223 transitions. [2023-08-29 17:42:14,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 4074 transitions, 77180 flow [2023-08-29 17:42:35,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 4074 transitions, 75734 flow, removed 388 selfloop flow, removed 5 redundant places. [2023-08-29 17:42:35,317 INFO L231 Difference]: Finished difference. Result has 403 places, 2284 transitions, 49484 flow [2023-08-29 17:42:35,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=34561, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=49484, PETRI_PLACES=403, PETRI_TRANSITIONS=2284} [2023-08-29 17:42:35,318 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 347 predicate places. [2023-08-29 17:42:35,318 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 2284 transitions, 49484 flow [2023-08-29 17:42:35,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 50.71052631578947) internal successors, (1927), 38 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:42:35,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:42:35,319 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 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] [2023-08-29 17:42:35,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-29 17:42:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:42:35,528 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:42:35,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:42:35,529 INFO L85 PathProgramCache]: Analyzing trace with hash -2019197861, now seen corresponding path program 4 times [2023-08-29 17:42:35,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:42:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734637538] [2023-08-29 17:42:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:42:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:42:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:42:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:42:36,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:42:36,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734637538] [2023-08-29 17:42:36,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734637538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:42:36,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561343307] [2023-08-29 17:42:36,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 17:42:36,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:42:36,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:42:36,094 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:42:36,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-29 17:42:36,431 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 17:42:36,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:42:36,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-29 17:42:36,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:42:36,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-29 17:42:36,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:42:36,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:42:36,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:42:36,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:42:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:42:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:42:36,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:42:36,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:42:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:42:37,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:42:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:42:45,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561343307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:42:45,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:42:45,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-29 17:42:45,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488052134] [2023-08-29 17:42:45,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:42:45,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 17:42:45,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:42:45,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 17:42:45,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=814, Unknown=1, NotChecked=0, Total=992 [2023-08-29 17:42:48,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:42:50,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:42:52,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:42:54,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:42:56,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:42:59,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:01,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:04,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:06,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:08,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:10,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:13,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:15,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:16,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:19,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:21,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:25,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:27,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:29,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:31,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:34,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:37,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:39,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:40,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-29 17:43:40,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 2284 transitions, 49484 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:43:40,557 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:43:40,557 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-29 17:43:40,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15