./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.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 f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:30:42,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:30:42,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:30:42,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:30:42,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:30:42,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:30:42,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:30:42,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:30:42,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:30:42,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:30:42,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:30:42,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:30:42,063 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:30:42,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:30:42,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:30:42,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:30:42,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:30:42,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:30:42,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:30:42,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:30:42,080 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:30:42,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:30:42,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:30:42,083 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:30:42,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:30:42,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:30:42,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:30:42,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:30:42,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:30:42,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:30:42,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:30:42,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:30:42,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:30:42,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:30:42,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:30:42,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:30:42,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:30:42,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:30:42,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:30:42,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:30:42,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:30:42,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:30:42,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:30:42,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:30:42,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:30:42,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:30:42,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:30:42,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:30:42,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:30:42,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:30:42,127 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:30:42,127 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:30:42,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:30:42,128 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:30:42,128 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:30:42,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:30:42,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:30:42,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:30:42,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:30:42,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:30:42,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:30:42,129 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:30:42,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:30:42,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:30:42,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:30:42,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:30:42,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:30:42,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:30:42,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:30:42,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:30:42,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:30:42,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:30:42,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:30:42,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:30:42,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:30:42,133 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:30:42,133 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:30:42,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:30:42,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f24afaadf07ead7c7da85cf6020fd6a6a5b5585e439441b5111a2dea2e7cec4c [2022-04-18 16:30:42,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:30:42,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:30:42,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:30:42,416 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:30:42,416 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:30:42,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2022-04-18 16:30:42,461 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/480473dd4/86977422a7434333a081223a05e6b1f1/FLAG83867040d [2022-04-18 16:30:42,991 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:30:42,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2022-04-18 16:30:43,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/480473dd4/86977422a7434333a081223a05e6b1f1/FLAG83867040d [2022-04-18 16:30:43,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/480473dd4/86977422a7434333a081223a05e6b1f1 [2022-04-18 16:30:43,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:30:43,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:30:43,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:30:43,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:30:43,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:30:43,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a28c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43, skipping insertion in model container [2022-04-18 16:30:43,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:30:43,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:30:43,760 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i[47556,47569] [2022-04-18 16:30:43,776 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:30:43,810 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:30:43,843 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i[47556,47569] [2022-04-18 16:30:43,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:30:43,899 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:30:43,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43 WrapperNode [2022-04-18 16:30:43,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:30:43,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:30:43,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:30:43,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:30:43,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,950 INFO L137 Inliner]: procedures = 269, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 143 [2022-04-18 16:30:43,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:30:43,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:30:43,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:30:43,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:30:43,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:43,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:44,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:44,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:30:44,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:30:44,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:30:44,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:30:44,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (1/1) ... [2022-04-18 16:30:44,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:30:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:44,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 16:30:44,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 16:30:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:30:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:30:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:30:44,078 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2022-04-18 16:30:44,078 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2022-04-18 16:30:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:30:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 16:30:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:30:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:30:44,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:30:44,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:30:44,080 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 16:30:44,189 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:30:44,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:30:44,522 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:30:44,530 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:30:44,532 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-04-18 16:30:44,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:30:44 BoogieIcfgContainer [2022-04-18 16:30:44,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:30:44,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:30:44,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:30:44,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:30:44,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:30:43" (1/3) ... [2022-04-18 16:30:44,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7acf6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:30:44, skipping insertion in model container [2022-04-18 16:30:44,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:30:43" (2/3) ... [2022-04-18 16:30:44,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7acf6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:30:44, skipping insertion in model container [2022-04-18 16:30:44,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:30:44" (3/3) ... [2022-04-18 16:30:44,545 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2022-04-18 16:30:44,549 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:30:44,550 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:30:44,550 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-04-18 16:30:44,550 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:30:44,646 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 16:30:44,697 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:30:44,706 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 16:30:44,706 INFO L341 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-04-18 16:30:44,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 144 places, 155 transitions, 318 flow [2022-04-18 16:30:44,800 INFO L129 PetriNetUnfolder]: 18/193 cut-off events. [2022-04-18 16:30:44,800 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 16:30:44,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 193 events. 18/193 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 340 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 116. Up to 4 conditions per place. [2022-04-18 16:30:44,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 155 transitions, 318 flow [2022-04-18 16:30:44,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 155 transitions, 318 flow [2022-04-18 16:30:44,832 INFO L129 PetriNetUnfolder]: 6/59 cut-off events. [2022-04-18 16:30:44,832 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:30:44,832 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:44,833 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:44,833 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:44,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1450069280, now seen corresponding path program 1 times [2022-04-18 16:30:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:44,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31577112] [2022-04-18 16:30:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:44,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:45,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:45,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:45,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31577112] [2022-04-18 16:30:45,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31577112] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:30:45,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:30:45,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:30:45,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092517634] [2022-04-18 16:30:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:30:45,058 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 16:30:45,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 16:30:45,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 16:30:45,090 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 155 [2022-04-18 16:30:45,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 155 transitions, 318 flow. Second operand has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:45,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 155 [2022-04-18 16:30:45,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:45,159 INFO L129 PetriNetUnfolder]: 7/181 cut-off events. [2022-04-18 16:30:45,159 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-04-18 16:30:45,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 181 events. 7/181 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 314 event pairs, 0 based on Foata normal form. 10/173 useless extension candidates. Maximal degree in co-relation 110. Up to 4 conditions per place. [2022-04-18 16:30:45,164 INFO L132 encePairwiseOnDemand]: 147/155 looper letters, 2 selfloop transitions, 0 changer transitions 0/146 dead transitions. [2022-04-18 16:30:45,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 146 transitions, 304 flow [2022-04-18 16:30:45,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 16:30:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 16:30:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 298 transitions. [2022-04-18 16:30:45,176 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9612903225806452 [2022-04-18 16:30:45,177 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 298 transitions. [2022-04-18 16:30:45,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 298 transitions. [2022-04-18 16:30:45,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:45,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 298 transitions. [2022-04-18 16:30:45,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.0) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,195 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,196 INFO L186 Difference]: Start difference. First operand has 144 places, 155 transitions, 318 flow. Second operand 2 states and 298 transitions. [2022-04-18 16:30:45,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 146 transitions, 304 flow [2022-04-18 16:30:45,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 146 transitions, 304 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:30:45,205 INFO L242 Difference]: Finished difference. Result has 144 places, 146 transitions, 300 flow [2022-04-18 16:30:45,206 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=300, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2022-04-18 16:30:45,210 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 0 predicate places. [2022-04-18 16:30:45,211 INFO L478 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 300 flow [2022-04-18 16:30:45,211 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 144.5) internal successors, (289), 2 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,212 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:45,212 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:45,212 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:30:45,213 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:45,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1253555775, now seen corresponding path program 1 times [2022-04-18 16:30:45,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:45,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225237407] [2022-04-18 16:30:45,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:45,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:45,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:45,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:45,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225237407] [2022-04-18 16:30:45,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225237407] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:30:45,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:30:45,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 16:30:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581917867] [2022-04-18 16:30:45,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:30:45,321 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:30:45,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:30:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:30:45,323 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2022-04-18 16:30:45,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:45,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2022-04-18 16:30:45,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:45,423 INFO L129 PetriNetUnfolder]: 5/174 cut-off events. [2022-04-18 16:30:45,424 INFO L130 PetriNetUnfolder]: For 3/18 co-relation queries the response was YES. [2022-04-18 16:30:45,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 174 events. 5/174 cut-off events. For 3/18 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 272 event pairs, 0 based on Foata normal form. 1/160 useless extension candidates. Maximal degree in co-relation 230. Up to 29 conditions per place. [2022-04-18 16:30:45,427 INFO L132 encePairwiseOnDemand]: 143/155 looper letters, 36 selfloop transitions, 6 changer transitions 16/164 dead transitions. [2022-04-18 16:30:45,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 164 transitions, 440 flow [2022-04-18 16:30:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:30:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:30:45,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2022-04-18 16:30:45,434 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.843010752688172 [2022-04-18 16:30:45,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2022-04-18 16:30:45,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2022-04-18 16:30:45,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:45,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2022-04-18 16:30:45,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,440 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 155.0) internal successors, (620), 4 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,440 INFO L186 Difference]: Start difference. First operand has 144 places, 146 transitions, 300 flow. Second operand 3 states and 392 transitions. [2022-04-18 16:30:45,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 164 transitions, 440 flow [2022-04-18 16:30:45,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 164 transitions, 440 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:30:45,448 INFO L242 Difference]: Finished difference. Result has 147 places, 135 transitions, 302 flow [2022-04-18 16:30:45,449 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=147, PETRI_TRANSITIONS=135} [2022-04-18 16:30:45,449 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2022-04-18 16:30:45,450 INFO L478 AbstractCegarLoop]: Abstraction has has 147 places, 135 transitions, 302 flow [2022-04-18 16:30:45,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,452 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:45,452 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:45,452 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:30:45,453 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:45,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:45,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1327632314, now seen corresponding path program 1 times [2022-04-18 16:30:45,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:45,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758757945] [2022-04-18 16:30:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:45,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:45,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:45,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:45,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758757945] [2022-04-18 16:30:45,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758757945] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:30:45,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919680252] [2022-04-18 16:30:45,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:45,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:45,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:45,529 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:30:45,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 16:30:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:45,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 16:30:45,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:30:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:45,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:30:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:45,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919680252] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:30:45,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 16:30:45,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-04-18 16:30:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978304592] [2022-04-18 16:30:45,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 16:30:45,862 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-18 16:30:45,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-18 16:30:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-04-18 16:30:45,864 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-04-18 16:30:45,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 135 transitions, 302 flow. Second operand has 10 states, 10 states have (on average 113.4) internal successors, (1134), 10 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:45,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:45,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-04-18 16:30:45,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:46,039 INFO L129 PetriNetUnfolder]: 4/166 cut-off events. [2022-04-18 16:30:46,039 INFO L130 PetriNetUnfolder]: For 7/22 co-relation queries the response was YES. [2022-04-18 16:30:46,040 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 166 events. 4/166 cut-off events. For 7/22 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 192 event pairs, 0 based on Foata normal form. 4/159 useless extension candidates. Maximal degree in co-relation 234. Up to 20 conditions per place. [2022-04-18 16:30:46,041 INFO L132 encePairwiseOnDemand]: 143/155 looper letters, 35 selfloop transitions, 15 changer transitions 1/156 dead transitions. [2022-04-18 16:30:46,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 156 transitions, 448 flow [2022-04-18 16:30:46,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-18 16:30:46,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-04-18 16:30:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1163 transitions. [2022-04-18 16:30:46,044 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7503225806451613 [2022-04-18 16:30:46,044 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1163 transitions. [2022-04-18 16:30:46,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1163 transitions. [2022-04-18 16:30:46,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:46,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1163 transitions. [2022-04-18 16:30:46,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 116.3) internal successors, (1163), 10 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:46,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:46,052 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 155.0) internal successors, (1705), 11 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:46,052 INFO L186 Difference]: Start difference. First operand has 147 places, 135 transitions, 302 flow. Second operand 10 states and 1163 transitions. [2022-04-18 16:30:46,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 156 transitions, 448 flow [2022-04-18 16:30:46,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 156 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:30:46,056 INFO L242 Difference]: Finished difference. Result has 147 places, 143 transitions, 372 flow [2022-04-18 16:30:46,056 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=372, PETRI_PLACES=147, PETRI_TRANSITIONS=143} [2022-04-18 16:30:46,061 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 3 predicate places. [2022-04-18 16:30:46,061 INFO L478 AbstractCegarLoop]: Abstraction has has 147 places, 143 transitions, 372 flow [2022-04-18 16:30:46,062 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.4) internal successors, (1134), 10 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:46,062 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:46,062 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:46,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 16:30:46,283 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:46,284 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:46,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1131839514, now seen corresponding path program 2 times [2022-04-18 16:30:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:46,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702496784] [2022-04-18 16:30:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:46,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:46,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702496784] [2022-04-18 16:30:46,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702496784] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:30:46,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507944380] [2022-04-18 16:30:46,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 16:30:46,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:46,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:46,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:30:46,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 16:30:46,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 16:30:46,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 16:30:46,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-18 16:30:46,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:30:46,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 16:30:46,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-04-18 16:30:46,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,699 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:30:46,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 30 treesize of output 32 [2022-04-18 16:30:46,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:30:46,740 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:30:46,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 39 treesize of output 44 [2022-04-18 16:30:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-04-18 16:30:46,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:30:46,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507944380] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:30:46,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 16:30:46,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-04-18 16:30:46,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467704530] [2022-04-18 16:30:46,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:30:46,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 16:30:46,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:46,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 16:30:46,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-04-18 16:30:46,767 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 155 [2022-04-18 16:30:46,768 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 143 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:46,768 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:46,768 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 155 [2022-04-18 16:30:46,768 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:47,272 INFO L129 PetriNetUnfolder]: 404/1533 cut-off events. [2022-04-18 16:30:47,273 INFO L130 PetriNetUnfolder]: For 18/23 co-relation queries the response was YES. [2022-04-18 16:30:47,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 1533 events. 404/1533 cut-off events. For 18/23 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 9415 event pairs, 168 based on Foata normal form. 0/1358 useless extension candidates. Maximal degree in co-relation 2351. Up to 622 conditions per place. [2022-04-18 16:30:47,282 INFO L132 encePairwiseOnDemand]: 135/155 looper letters, 59 selfloop transitions, 55 changer transitions 0/220 dead transitions. [2022-04-18 16:30:47,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 220 transitions, 754 flow [2022-04-18 16:30:47,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-18 16:30:47,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-04-18 16:30:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 864 transitions. [2022-04-18 16:30:47,286 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7963133640552995 [2022-04-18 16:30:47,286 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 864 transitions. [2022-04-18 16:30:47,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 864 transitions. [2022-04-18 16:30:47,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:47,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 864 transitions. [2022-04-18 16:30:47,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:47,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:47,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 155.0) internal successors, (1240), 8 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:47,293 INFO L186 Difference]: Start difference. First operand has 147 places, 143 transitions, 372 flow. Second operand 7 states and 864 transitions. [2022-04-18 16:30:47,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 220 transitions, 754 flow [2022-04-18 16:30:47,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 220 transitions, 744 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-04-18 16:30:47,301 INFO L242 Difference]: Finished difference. Result has 157 places, 196 transitions, 723 flow [2022-04-18 16:30:47,301 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=723, PETRI_PLACES=157, PETRI_TRANSITIONS=196} [2022-04-18 16:30:47,302 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 13 predicate places. [2022-04-18 16:30:47,303 INFO L478 AbstractCegarLoop]: Abstraction has has 157 places, 196 transitions, 723 flow [2022-04-18 16:30:47,303 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.28571428571429) internal successors, (758), 7 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:47,303 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:47,304 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:47,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 16:30:47,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-04-18 16:30:47,520 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:47,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2107337554, now seen corresponding path program 1 times [2022-04-18 16:30:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:47,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485296979] [2022-04-18 16:30:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:47,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485296979] [2022-04-18 16:30:47,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485296979] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:30:47,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564856965] [2022-04-18 16:30:47,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:47,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:47,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:47,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:30:47,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 16:30:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:47,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 16:30:47,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:30:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:47,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:30:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:48,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564856965] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:30:48,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 16:30:48,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-04-18 16:30:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122164295] [2022-04-18 16:30:48,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 16:30:48,059 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-04-18 16:30:48,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-04-18 16:30:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-04-18 16:30:48,062 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-04-18 16:30:48,064 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 196 transitions, 723 flow. Second operand has 18 states, 18 states have (on average 113.55555555555556) internal successors, (2044), 18 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:48,064 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:48,064 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-04-18 16:30:48,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:48,401 INFO L129 PetriNetUnfolder]: 142/748 cut-off events. [2022-04-18 16:30:48,401 INFO L130 PetriNetUnfolder]: For 90/107 co-relation queries the response was YES. [2022-04-18 16:30:48,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 748 events. 142/748 cut-off events. For 90/107 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3661 event pairs, 12 based on Foata normal form. 6/701 useless extension candidates. Maximal degree in co-relation 1315. Up to 154 conditions per place. [2022-04-18 16:30:48,407 INFO L132 encePairwiseOnDemand]: 143/155 looper letters, 43 selfloop transitions, 27 changer transitions 1/229 dead transitions. [2022-04-18 16:30:48,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 229 transitions, 983 flow [2022-04-18 16:30:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-04-18 16:30:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-04-18 16:30:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2517 transitions. [2022-04-18 16:30:48,414 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7381231671554253 [2022-04-18 16:30:48,415 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2517 transitions. [2022-04-18 16:30:48,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2517 transitions. [2022-04-18 16:30:48,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:48,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2517 transitions. [2022-04-18 16:30:48,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.4090909090909) internal successors, (2517), 22 states have internal predecessors, (2517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:48,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:48,430 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 155.0) internal successors, (3565), 23 states have internal predecessors, (3565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:48,430 INFO L186 Difference]: Start difference. First operand has 157 places, 196 transitions, 723 flow. Second operand 22 states and 2517 transitions. [2022-04-18 16:30:48,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 229 transitions, 983 flow [2022-04-18 16:30:48,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 229 transitions, 982 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:30:48,441 INFO L242 Difference]: Finished difference. Result has 182 places, 209 transitions, 870 flow [2022-04-18 16:30:48,442 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=870, PETRI_PLACES=182, PETRI_TRANSITIONS=209} [2022-04-18 16:30:48,444 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 38 predicate places. [2022-04-18 16:30:48,444 INFO L478 AbstractCegarLoop]: Abstraction has has 182 places, 209 transitions, 870 flow [2022-04-18 16:30:48,445 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 113.55555555555556) internal successors, (2044), 18 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:48,445 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:48,446 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:48,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-18 16:30:48,670 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:48,671 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting thread_routineErr0ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash -289344878, now seen corresponding path program 2 times [2022-04-18 16:30:48,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:48,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336259702] [2022-04-18 16:30:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:48,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 16:30:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:48,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336259702] [2022-04-18 16:30:48,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336259702] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:30:48,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240977517] [2022-04-18 16:30:48,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 16:30:48,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:48,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:48,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:30:48,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 16:30:48,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 16:30:48,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 16:30:48,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 16:30:48,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:30:49,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 16:30:49,125 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 16:30:49,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 16:30:49,163 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 16:30:49,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 16:30:49,213 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 16:30:49,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 16:30:49,238 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-18 16:30:49,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:30:49,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240977517] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:30:49,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-18 16:30:49,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-04-18 16:30:49,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814407596] [2022-04-18 16:30:49,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:30:49,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:30:49,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:30:49,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-04-18 16:30:49,245 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 155 [2022-04-18 16:30:49,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 209 transitions, 870 flow. Second operand has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:49,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:49,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 155 [2022-04-18 16:30:49,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:49,772 INFO L129 PetriNetUnfolder]: 506/2607 cut-off events. [2022-04-18 16:30:49,772 INFO L130 PetriNetUnfolder]: For 481/521 co-relation queries the response was YES. [2022-04-18 16:30:49,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 2607 events. 506/2607 cut-off events. For 481/521 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 19188 event pairs, 101 based on Foata normal form. 7/2378 useless extension candidates. Maximal degree in co-relation 4533. Up to 658 conditions per place. [2022-04-18 16:30:49,788 INFO L132 encePairwiseOnDemand]: 144/155 looper letters, 128 selfloop transitions, 33 changer transitions 0/284 dead transitions. [2022-04-18 16:30:49,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 284 transitions, 1483 flow [2022-04-18 16:30:49,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:30:49,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:30:49,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 767 transitions. [2022-04-18 16:30:49,791 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8247311827956989 [2022-04-18 16:30:49,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 767 transitions. [2022-04-18 16:30:49,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 767 transitions. [2022-04-18 16:30:49,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:49,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 767 transitions. [2022-04-18 16:30:49,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 127.83333333333333) internal successors, (767), 6 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:49,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:49,796 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 155.0) internal successors, (1085), 7 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:49,796 INFO L186 Difference]: Start difference. First operand has 182 places, 209 transitions, 870 flow. Second operand 6 states and 767 transitions. [2022-04-18 16:30:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 284 transitions, 1483 flow [2022-04-18 16:30:49,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 284 transitions, 1455 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-04-18 16:30:49,805 INFO L242 Difference]: Finished difference. Result has 186 places, 237 transitions, 1140 flow [2022-04-18 16:30:49,805 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=186, PETRI_TRANSITIONS=237} [2022-04-18 16:30:49,806 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 42 predicate places. [2022-04-18 16:30:49,806 INFO L478 AbstractCegarLoop]: Abstraction has has 186 places, 237 transitions, 1140 flow [2022-04-18 16:30:49,806 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.16666666666667) internal successors, (685), 6 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:49,807 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:49,807 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:49,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 16:30:50,027 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:50,027 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:50,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1174086661, now seen corresponding path program 1 times [2022-04-18 16:30:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:50,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19836452] [2022-04-18 16:30:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:50,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:50,083 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-04-18 16:30:50,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19836452] [2022-04-18 16:30:50,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19836452] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:30:50,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074256654] [2022-04-18 16:30:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:50,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:50,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:50,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:30:50,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-18 16:30:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:50,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-18 16:30:50,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:30:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 16:30:50,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:30:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-04-18 16:30:50,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074256654] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:30:50,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 16:30:50,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 34 [2022-04-18 16:30:50,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570333111] [2022-04-18 16:30:50,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 16:30:50,810 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-04-18 16:30:50,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:50,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-04-18 16:30:50,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2022-04-18 16:30:50,838 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 155 [2022-04-18 16:30:50,842 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 237 transitions, 1140 flow. Second operand has 34 states, 34 states have (on average 113.20588235294117) internal successors, (3849), 34 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:50,842 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:50,842 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 155 [2022-04-18 16:30:50,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:51,538 INFO L129 PetriNetUnfolder]: 214/1326 cut-off events. [2022-04-18 16:30:51,538 INFO L130 PetriNetUnfolder]: For 592/609 co-relation queries the response was YES. [2022-04-18 16:30:51,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 1326 events. 214/1326 cut-off events. For 592/609 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7915 event pairs, 11 based on Foata normal form. 10/1249 useless extension candidates. Maximal degree in co-relation 2505. Up to 235 conditions per place. [2022-04-18 16:30:51,548 INFO L132 encePairwiseOnDemand]: 144/155 looper letters, 42 selfloop transitions, 49 changer transitions 0/274 dead transitions. [2022-04-18 16:30:51,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 274 transitions, 1569 flow [2022-04-18 16:30:51,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-04-18 16:30:51,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-04-18 16:30:51,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5270 transitions. [2022-04-18 16:30:51,560 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.723404255319149 [2022-04-18 16:30:51,560 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5270 transitions. [2022-04-18 16:30:51,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5270 transitions. [2022-04-18 16:30:51,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:51,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5270 transitions. [2022-04-18 16:30:51,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 112.12765957446808) internal successors, (5270), 47 states have internal predecessors, (5270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:51,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:51,590 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 155.0) internal successors, (7440), 48 states have internal predecessors, (7440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:51,591 INFO L186 Difference]: Start difference. First operand has 186 places, 237 transitions, 1140 flow. Second operand 47 states and 5270 transitions. [2022-04-18 16:30:51,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 274 transitions, 1569 flow [2022-04-18 16:30:51,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 274 transitions, 1551 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-04-18 16:30:51,602 INFO L242 Difference]: Finished difference. Result has 227 places, 246 transitions, 1376 flow [2022-04-18 16:30:51,602 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=1376, PETRI_PLACES=227, PETRI_TRANSITIONS=246} [2022-04-18 16:30:51,603 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 83 predicate places. [2022-04-18 16:30:51,603 INFO L478 AbstractCegarLoop]: Abstraction has has 227 places, 246 transitions, 1376 flow [2022-04-18 16:30:51,605 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 113.20588235294117) internal successors, (3849), 34 states have internal predecessors, (3849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:51,605 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:51,605 INFO L255 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:51,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-18 16:30:51,831 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:51,831 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:51,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1518517776, now seen corresponding path program 1 times [2022-04-18 16:30:51,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:51,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27640034] [2022-04-18 16:30:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:51,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 16:30:52,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:52,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27640034] [2022-04-18 16:30:52,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27640034] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:30:52,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998658005] [2022-04-18 16:30:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:52,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:52,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:52,233 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:30:52,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-18 16:30:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:52,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-18 16:30:52,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:30:52,620 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 16:30:52,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:30:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 16:30:53,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998658005] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:30:53,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 16:30:53,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2022-04-18 16:30:53,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364163337] [2022-04-18 16:30:53,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 16:30:53,558 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-04-18 16:30:53,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:30:53,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-04-18 16:30:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2022-04-18 16:30:53,568 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-04-18 16:30:53,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 246 transitions, 1376 flow. Second operand has 66 states, 66 states have (on average 113.54545454545455) internal successors, (7494), 66 states have internal predecessors, (7494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:53,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:30:53,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-04-18 16:30:53,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:30:55,516 INFO L129 PetriNetUnfolder]: 214/1406 cut-off events. [2022-04-18 16:30:55,516 INFO L130 PetriNetUnfolder]: For 2433/2450 co-relation queries the response was YES. [2022-04-18 16:30:55,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 1406 events. 214/1406 cut-off events. For 2433/2450 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7912 event pairs, 11 based on Foata normal form. 17/1336 useless extension candidates. Maximal degree in co-relation 3005. Up to 235 conditions per place. [2022-04-18 16:30:55,527 INFO L132 encePairwiseOnDemand]: 146/155 looper letters, 74 selfloop transitions, 96 changer transitions 0/354 dead transitions. [2022-04-18 16:30:55,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 354 transitions, 2568 flow [2022-04-18 16:30:55,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-04-18 16:30:55,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2022-04-18 16:30:55,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 10509 transitions. [2022-04-18 16:30:55,546 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7290322580645161 [2022-04-18 16:30:55,546 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 10509 transitions. [2022-04-18 16:30:55,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 10509 transitions. [2022-04-18 16:30:55,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:30:55,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 10509 transitions. [2022-04-18 16:30:55,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 113.0) internal successors, (10509), 93 states have internal predecessors, (10509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:55,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 155.0) internal successors, (14570), 94 states have internal predecessors, (14570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:55,604 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 155.0) internal successors, (14570), 94 states have internal predecessors, (14570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:55,605 INFO L186 Difference]: Start difference. First operand has 227 places, 246 transitions, 1376 flow. Second operand 93 states and 10509 transitions. [2022-04-18 16:30:55,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 354 transitions, 2568 flow [2022-04-18 16:30:55,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 354 transitions, 2473 flow, removed 26 selfloop flow, removed 20 redundant places. [2022-04-18 16:30:55,623 INFO L242 Difference]: Finished difference. Result has 316 places, 295 transitions, 2012 flow [2022-04-18 16:30:55,624 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=93, PETRI_FLOW=2012, PETRI_PLACES=316, PETRI_TRANSITIONS=295} [2022-04-18 16:30:55,624 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 172 predicate places. [2022-04-18 16:30:55,624 INFO L478 AbstractCegarLoop]: Abstraction has has 316 places, 295 transitions, 2012 flow [2022-04-18 16:30:55,626 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 113.54545454545455) internal successors, (7494), 66 states have internal predecessors, (7494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:30:55,626 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:30:55,627 INFO L255 CegarLoopForPetriNet]: trace histogram [31, 31, 31, 31, 31, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:30:55,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-18 16:30:55,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:55,851 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:30:55,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:30:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1124352272, now seen corresponding path program 2 times [2022-04-18 16:30:55,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:30:55,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495871460] [2022-04-18 16:30:55,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:30:55,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:30:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:30:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 16:30:57,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:30:57,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495871460] [2022-04-18 16:30:57,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495871460] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:30:57,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329493030] [2022-04-18 16:30:57,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 16:30:57,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:30:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:30:57,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:30:57,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-18 16:30:57,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 16:30:57,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 16:30:57,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 64 conjunts are in the unsatisfiable core [2022-04-18 16:30:57,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:30:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 16:30:57,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:31:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2369 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 16:31:00,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329493030] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:31:00,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-04-18 16:31:00,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2022-04-18 16:31:00,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633141995] [2022-04-18 16:31:00,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-04-18 16:31:00,575 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-04-18 16:31:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:31:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-04-18 16:31:00,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2022-04-18 16:31:00,601 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 155 [2022-04-18 16:31:00,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 295 transitions, 2012 flow. Second operand has 130 states, 130 states have (on average 113.52307692307693) internal successors, (14758), 130 states have internal predecessors, (14758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:00,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:31:00,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 155 [2022-04-18 16:31:00,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:31:06,444 INFO L129 PetriNetUnfolder]: 214/1566 cut-off events. [2022-04-18 16:31:06,444 INFO L130 PetriNetUnfolder]: For 17133/17150 co-relation queries the response was YES. [2022-04-18 16:31:06,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 1566 events. 214/1566 cut-off events. For 17133/17150 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7916 event pairs, 11 based on Foata normal form. 33/1512 useless extension candidates. Maximal degree in co-relation 4131. Up to 235 conditions per place. [2022-04-18 16:31:06,460 INFO L132 encePairwiseOnDemand]: 146/155 looper letters, 138 selfloop transitions, 192 changer transitions 0/514 dead transitions. [2022-04-18 16:31:06,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 514 transitions, 4820 flow [2022-04-18 16:31:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-04-18 16:31:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2022-04-18 16:31:06,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 21341 transitions. [2022-04-18 16:31:06,490 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7284860897764124 [2022-04-18 16:31:06,490 INFO L72 ComplementDD]: Start complementDD. Operand 189 states and 21341 transitions. [2022-04-18 16:31:06,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 189 states and 21341 transitions. [2022-04-18 16:31:06,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:31:06,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 189 states and 21341 transitions. [2022-04-18 16:31:06,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 190 states, 189 states have (on average 112.91534391534391) internal successors, (21341), 189 states have internal predecessors, (21341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:06,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 190 states, 190 states have (on average 155.0) internal successors, (29450), 190 states have internal predecessors, (29450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:06,568 INFO L81 ComplementDD]: Finished complementDD. Result has 190 states, 190 states have (on average 155.0) internal successors, (29450), 190 states have internal predecessors, (29450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:06,569 INFO L186 Difference]: Start difference. First operand has 316 places, 295 transitions, 2012 flow. Second operand 189 states and 21341 transitions. [2022-04-18 16:31:06,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 514 transitions, 4820 flow [2022-04-18 16:31:06,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 514 transitions, 4699 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-04-18 16:31:06,615 INFO L242 Difference]: Finished difference. Result has 495 places, 392 transitions, 3522 flow [2022-04-18 16:31:06,616 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=155, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=189, PETRI_FLOW=3522, PETRI_PLACES=495, PETRI_TRANSITIONS=392} [2022-04-18 16:31:06,617 INFO L335 CegarLoopForPetriNet]: 144 programPoint places, 351 predicate places. [2022-04-18 16:31:06,617 INFO L478 AbstractCegarLoop]: Abstraction has has 495 places, 392 transitions, 3522 flow [2022-04-18 16:31:06,620 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 113.52307692307693) internal successors, (14758), 130 states have internal predecessors, (14758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:31:06,620 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:31:06,620 INFO L255 CegarLoopForPetriNet]: trace histogram [63, 63, 63, 63, 63, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:31:06,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-18 16:31:06,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:31:06,835 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread_routineErr0ASSERT_VIOLATIONDATA_RACE, thread_routineErr1ASSERT_VIOLATIONDATA_RACE, thread_routineErr2ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2022-04-18 16:31:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:31:06,836 INFO L85 PathProgramCache]: Analyzing trace with hash 118310672, now seen corresponding path program 3 times [2022-04-18 16:31:06,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:31:06,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014767322] [2022-04-18 16:31:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:31:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:31:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:31:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9841 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-04-18 16:31:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:31:11,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014767322] [2022-04-18 16:31:11,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014767322] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-18 16:31:11,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358308293] [2022-04-18 16:31:11,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 16:31:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:31:11,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:31:11,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:31:11,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15