./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c --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/weaver/loop-tiling-eq.wvr.c -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 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 16:33:43,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 16:33:43,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 16:33:43,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 16:33:43,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 16:33:43,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 16:33:43,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 16:33:43,099 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 16:33:43,101 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 16:33:43,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 16:33:43,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 16:33:43,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 16:33:43,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 16:33:43,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 16:33:43,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 16:33:43,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 16:33:43,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 16:33:43,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 16:33:43,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 16:33:43,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 16:33:43,123 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 16:33:43,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 16:33:43,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 16:33:43,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 16:33:43,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 16:33:43,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 16:33:43,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 16:33:43,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 16:33:43,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 16:33:43,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 16:33:43,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 16:33:43,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 16:33:43,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 16:33:43,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 16:33:43,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 16:33:43,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 16:33:43,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 16:33:43,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 16:33:43,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 16:33:43,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 16:33:43,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 16:33:43,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 16:33:43,140 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 16:33:43,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 16:33:43,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 16:33:43,168 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 16:33:43,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 16:33:43,168 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 16:33:43,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 16:33:43,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 16:33:43,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 16:33:43,169 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 16:33:43,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 16:33:43,170 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 16:33:43,170 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 16:33:43,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 16:33:43,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 16:33:43,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 16:33:43,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 16:33:43,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 16:33:43,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 16:33:43,172 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 16:33:43,173 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 16:33:43,173 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 16:33:43,173 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 16:33:43,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 16:33:43,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 16:33:43,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 16:33:43,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 16:33:43,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:33:43,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 16:33:43,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 16:33:43,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 16:33:43,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 16:33:43,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 16:33:43,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 16:33:43,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 16:33:43,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 16:33:43,175 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bf204635285748ea2bd88f763410b9afff54eeccde3aa0a970ff723633af9c2 [2022-04-18 16:33:43,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 16:33:43,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 16:33:43,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 16:33:43,390 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 16:33:43,391 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 16:33:43,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2022-04-18 16:33:43,435 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4cf6912/7a8ebbdf6cd1454faa4b40bae7b68a79/FLAG473ac17d5 [2022-04-18 16:33:43,818 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 16:33:43,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2022-04-18 16:33:43,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4cf6912/7a8ebbdf6cd1454faa4b40bae7b68a79/FLAG473ac17d5 [2022-04-18 16:33:44,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4cf6912/7a8ebbdf6cd1454faa4b40bae7b68a79 [2022-04-18 16:33:44,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 16:33:44,243 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 16:33:44,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:44,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 16:33:44,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 16:33:44,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3374a724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44, skipping insertion in model container [2022-04-18 16:33:44,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 16:33:44,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 16:33:44,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-04-18 16:33:44,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:44,479 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 16:33:44,515 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2618,2631] [2022-04-18 16:33:44,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 16:33:44,538 INFO L208 MainTranslator]: Completed translation [2022-04-18 16:33:44,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44 WrapperNode [2022-04-18 16:33:44,538 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 16:33:44,539 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:44,539 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 16:33:44,539 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 16:33:44,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,597 INFO L137 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 341 [2022-04-18 16:33:44,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 16:33:44,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 16:33:44,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 16:33:44,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 16:33:44,607 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 16:33:44,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 16:33:44,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 16:33:44,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 16:33:44,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (1/1) ... [2022-04-18 16:33:44,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 16:33:44,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:44,685 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 16:33:44,714 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 16:33:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 16:33:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 16:33:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 16:33:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 16:33:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 16:33:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 16:33:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-04-18 16:33:44,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-04-18 16:33:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-04-18 16:33:44,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-04-18 16:33:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 16:33:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 16:33:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 16:33:44,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 16:33:44,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 16:33:44,729 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 16:33:44,866 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 16:33:44,867 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 16:33:45,348 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 16:33:45,357 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 16:33:45,357 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-04-18 16:33:45,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:45 BoogieIcfgContainer [2022-04-18 16:33:45,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 16:33:45,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 16:33:45,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 16:33:45,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 16:33:45,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 04:33:44" (1/3) ... [2022-04-18 16:33:45,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404a9223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:45, skipping insertion in model container [2022-04-18 16:33:45,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 04:33:44" (2/3) ... [2022-04-18 16:33:45,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@404a9223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 04:33:45, skipping insertion in model container [2022-04-18 16:33:45,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 04:33:45" (3/3) ... [2022-04-18 16:33:45,364 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2022-04-18 16:33:45,368 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 16:33:45,368 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 16:33:45,368 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2022-04-18 16:33:45,368 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 16:33:45,453 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 16:33:45,493 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 16:33:45,497 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 16:33:45,498 INFO L341 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2022-04-18 16:33:45,513 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 516 places, 539 transitions, 1094 flow [2022-04-18 16:33:45,638 INFO L129 PetriNetUnfolder]: 30/537 cut-off events. [2022-04-18 16:33:45,638 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 16:33:45,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 537 events. 30/537 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 816 event pairs, 0 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 343. Up to 2 conditions per place. [2022-04-18 16:33:45,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 516 places, 539 transitions, 1094 flow [2022-04-18 16:33:45,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 516 transitions, 1044 flow [2022-04-18 16:33:45,656 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2022-04-18 16:33:45,656 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 16:33:45,656 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:45,657 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] [2022-04-18 16:33:45,657 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash 855090486, now seen corresponding path program 1 times [2022-04-18 16:33:45,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:45,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420350754] [2022-04-18 16:33:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:45,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:45,816 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 16:33:45,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:45,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420350754] [2022-04-18 16:33:45,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420350754] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:45,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:45,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:45,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931899844] [2022-04-18 16:33:45,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:45,824 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:45,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:45,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:45,857 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 485 out of 539 [2022-04-18 16:33:45,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 516 transitions, 1044 flow. Second operand has 3 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 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 16:33:45,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:45,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 485 of 539 [2022-04-18 16:33:45,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:45,997 INFO L129 PetriNetUnfolder]: 20/558 cut-off events. [2022-04-18 16:33:45,997 INFO L130 PetriNetUnfolder]: For 29/32 co-relation queries the response was YES. [2022-04-18 16:33:46,002 INFO L84 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 558 events. 20/558 cut-off events. For 29/32 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1271 event pairs, 6 based on Foata normal form. 26/494 useless extension candidates. Maximal degree in co-relation 345. Up to 46 conditions per place. [2022-04-18 16:33:46,006 INFO L132 encePairwiseOnDemand]: 518/539 looper letters, 31 selfloop transitions, 2 changer transitions 11/497 dead transitions. [2022-04-18 16:33:46,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 497 transitions, 1072 flow [2022-04-18 16:33:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:46,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1507 transitions. [2022-04-18 16:33:46,025 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9319727891156463 [2022-04-18 16:33:46,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1507 transitions. [2022-04-18 16:33:46,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1507 transitions. [2022-04-18 16:33:46,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:46,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1507 transitions. [2022-04-18 16:33:46,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 502.3333333333333) internal successors, (1507), 3 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:46,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,049 INFO L186 Difference]: Start difference. First operand has 494 places, 516 transitions, 1044 flow. Second operand 3 states and 1507 transitions. [2022-04-18 16:33:46,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 497 transitions, 1072 flow [2022-04-18 16:33:46,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 497 transitions, 1064 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-04-18 16:33:46,067 INFO L242 Difference]: Finished difference. Result has 491 places, 486 transitions, 980 flow [2022-04-18 16:33:46,069 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=980, PETRI_PLACES=491, PETRI_TRANSITIONS=486} [2022-04-18 16:33:46,075 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -3 predicate places. [2022-04-18 16:33:46,076 INFO L478 AbstractCegarLoop]: Abstraction has has 491 places, 486 transitions, 980 flow [2022-04-18 16:33:46,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 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 16:33:46,077 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:46,077 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] [2022-04-18 16:33:46,077 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 16:33:46,078 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:46,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:46,078 INFO L85 PathProgramCache]: Analyzing trace with hash -107747905, now seen corresponding path program 1 times [2022-04-18 16:33:46,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:46,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441296144] [2022-04-18 16:33:46,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:46,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:46,166 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 16:33:46,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:46,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441296144] [2022-04-18 16:33:46,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441296144] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:46,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:46,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:46,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701110119] [2022-04-18 16:33:46,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:46,168 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:46,170 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 488 out of 539 [2022-04-18 16:33:46,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 486 transitions, 980 flow. Second operand has 3 states, 3 states have (on average 489.3333333333333) internal successors, (1468), 3 states have internal predecessors, (1468), 0 states have call successors, (0), 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 16:33:46,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:46,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 488 of 539 [2022-04-18 16:33:46,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:46,249 INFO L129 PetriNetUnfolder]: 18/535 cut-off events. [2022-04-18 16:33:46,249 INFO L130 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2022-04-18 16:33:46,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 535 events. 18/535 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1112 event pairs, 4 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 538. Up to 30 conditions per place. [2022-04-18 16:33:46,252 INFO L132 encePairwiseOnDemand]: 530/539 looper letters, 21 selfloop transitions, 1 changer transitions 0/478 dead transitions. [2022-04-18 16:33:46,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 478 transitions, 1008 flow [2022-04-18 16:33:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:46,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1494 transitions. [2022-04-18 16:33:46,255 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9239332096474954 [2022-04-18 16:33:46,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1494 transitions. [2022-04-18 16:33:46,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1494 transitions. [2022-04-18 16:33:46,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:46,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1494 transitions. [2022-04-18 16:33:46,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 498.0) internal successors, (1494), 3 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:33:46,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,261 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,262 INFO L186 Difference]: Start difference. First operand has 491 places, 486 transitions, 980 flow. Second operand 3 states and 1494 transitions. [2022-04-18 16:33:46,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 478 transitions, 1008 flow [2022-04-18 16:33:46,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 478 transitions, 1004 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:46,269 INFO L242 Difference]: Finished difference. Result has 472 places, 478 transitions, 962 flow [2022-04-18 16:33:46,270 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=962, PETRI_PLACES=472, PETRI_TRANSITIONS=478} [2022-04-18 16:33:46,271 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -22 predicate places. [2022-04-18 16:33:46,271 INFO L478 AbstractCegarLoop]: Abstraction has has 472 places, 478 transitions, 962 flow [2022-04-18 16:33:46,272 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 489.3333333333333) internal successors, (1468), 3 states have internal predecessors, (1468), 0 states have call successors, (0), 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 16:33:46,272 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:46,272 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:46,273 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 16:33:46,273 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:46,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:46,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1002290613, now seen corresponding path program 1 times [2022-04-18 16:33:46,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:46,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578353512] [2022-04-18 16:33:46,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:46,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:46,344 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 16:33:46,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:46,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578353512] [2022-04-18 16:33:46,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578353512] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:46,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:46,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:46,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124253234] [2022-04-18 16:33:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:46,347 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:46,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:46,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:46,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:46,350 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 482 out of 539 [2022-04-18 16:33:46,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 478 transitions, 962 flow. Second operand has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 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 16:33:46,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:46,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 482 of 539 [2022-04-18 16:33:46,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:46,448 INFO L129 PetriNetUnfolder]: 16/532 cut-off events. [2022-04-18 16:33:46,449 INFO L130 PetriNetUnfolder]: For 5/8 co-relation queries the response was YES. [2022-04-18 16:33:46,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 532 events. 16/532 cut-off events. For 5/8 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1054 event pairs, 3 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 546. Up to 42 conditions per place. [2022-04-18 16:33:46,452 INFO L132 encePairwiseOnDemand]: 536/539 looper letters, 34 selfloop transitions, 2 changer transitions 0/477 dead transitions. [2022-04-18 16:33:46,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 477 transitions, 1032 flow [2022-04-18 16:33:46,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1483 transitions. [2022-04-18 16:33:46,455 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.91713048855906 [2022-04-18 16:33:46,455 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1483 transitions. [2022-04-18 16:33:46,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1483 transitions. [2022-04-18 16:33:46,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:46,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1483 transitions. [2022-04-18 16:33:46,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 494.3333333333333) internal successors, (1483), 3 states have internal predecessors, (1483), 0 states have call successors, (0), 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 16:33:46,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,480 INFO L186 Difference]: Start difference. First operand has 472 places, 478 transitions, 962 flow. Second operand 3 states and 1483 transitions. [2022-04-18 16:33:46,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 477 transitions, 1032 flow [2022-04-18 16:33:46,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 477 transitions, 1031 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:46,489 INFO L242 Difference]: Finished difference. Result has 472 places, 477 transitions, 963 flow [2022-04-18 16:33:46,490 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=963, PETRI_PLACES=472, PETRI_TRANSITIONS=477} [2022-04-18 16:33:46,492 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -22 predicate places. [2022-04-18 16:33:46,493 INFO L478 AbstractCegarLoop]: Abstraction has has 472 places, 477 transitions, 963 flow [2022-04-18 16:33:46,494 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 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 16:33:46,494 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:46,494 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:46,494 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 16:33:46,495 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:46,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2010554339, now seen corresponding path program 1 times [2022-04-18 16:33:46,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:46,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014833101] [2022-04-18 16:33:46,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:46,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:46,548 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 16:33:46,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:46,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014833101] [2022-04-18 16:33:46,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014833101] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:46,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:46,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107712981] [2022-04-18 16:33:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:46,549 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:46,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:46,552 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 485 out of 539 [2022-04-18 16:33:46,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 477 transitions, 963 flow. Second operand has 3 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 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 16:33:46,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:46,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 485 of 539 [2022-04-18 16:33:46,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:46,635 INFO L129 PetriNetUnfolder]: 15/521 cut-off events. [2022-04-18 16:33:46,635 INFO L130 PetriNetUnfolder]: For 5/7 co-relation queries the response was YES. [2022-04-18 16:33:46,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 521 events. 15/521 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 985 event pairs, 2 based on Foata normal form. 0/464 useless extension candidates. Maximal degree in co-relation 524. Up to 27 conditions per place. [2022-04-18 16:33:46,638 INFO L132 encePairwiseOnDemand]: 529/539 looper letters, 23 selfloop transitions, 1 changer transitions 0/468 dead transitions. [2022-04-18 16:33:46,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 468 transitions, 993 flow [2022-04-18 16:33:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1488 transitions. [2022-04-18 16:33:46,642 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9202226345083488 [2022-04-18 16:33:46,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1488 transitions. [2022-04-18 16:33:46,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1488 transitions. [2022-04-18 16:33:46,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:46,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1488 transitions. [2022-04-18 16:33:46,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 496.0) internal successors, (1488), 3 states have internal predecessors, (1488), 0 states have call successors, (0), 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 16:33:46,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,650 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,650 INFO L186 Difference]: Start difference. First operand has 472 places, 477 transitions, 963 flow. Second operand 3 states and 1488 transitions. [2022-04-18 16:33:46,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 468 transitions, 993 flow [2022-04-18 16:33:46,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 468 transitions, 989 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:46,660 INFO L242 Difference]: Finished difference. Result has 463 places, 468 transitions, 943 flow [2022-04-18 16:33:46,665 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=941, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=943, PETRI_PLACES=463, PETRI_TRANSITIONS=468} [2022-04-18 16:33:46,666 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -31 predicate places. [2022-04-18 16:33:46,666 INFO L478 AbstractCegarLoop]: Abstraction has has 463 places, 468 transitions, 943 flow [2022-04-18 16:33:46,667 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 486.3333333333333) internal successors, (1459), 3 states have internal predecessors, (1459), 0 states have call successors, (0), 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 16:33:46,667 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:46,668 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:46,668 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 16:33:46,668 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:46,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:46,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1316739501, now seen corresponding path program 1 times [2022-04-18 16:33:46,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:46,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584417666] [2022-04-18 16:33:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:46,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:46,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:46,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549484370] [2022-04-18 16:33:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:46,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:46,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:46,716 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 16:33:46,717 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 16:33:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:46,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:46,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:46,897 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 16:33:46,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:46,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:46,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584417666] [2022-04-18 16:33:46,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:46,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549484370] [2022-04-18 16:33:46,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549484370] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:46,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:46,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732129682] [2022-04-18 16:33:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:46,899 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:46,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:46,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:46,901 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 500 out of 539 [2022-04-18 16:33:46,902 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 468 transitions, 943 flow. Second operand has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 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 16:33:46,902 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:46,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 500 of 539 [2022-04-18 16:33:46,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:46,952 INFO L129 PetriNetUnfolder]: 15/504 cut-off events. [2022-04-18 16:33:46,952 INFO L130 PetriNetUnfolder]: For 2/5 co-relation queries the response was YES. [2022-04-18 16:33:46,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 504 events. 15/504 cut-off events. For 2/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 947 event pairs, 3 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 504. Up to 24 conditions per place. [2022-04-18 16:33:46,955 INFO L132 encePairwiseOnDemand]: 536/539 looper letters, 16 selfloop transitions, 2 changer transitions 0/467 dead transitions. [2022-04-18 16:33:46,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 467 transitions, 977 flow [2022-04-18 16:33:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1519 transitions. [2022-04-18 16:33:46,974 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2022-04-18 16:33:46,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1519 transitions. [2022-04-18 16:33:46,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1519 transitions. [2022-04-18 16:33:46,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:46,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1519 transitions. [2022-04-18 16:33:46,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 506.3333333333333) internal successors, (1519), 3 states have internal predecessors, (1519), 0 states have call successors, (0), 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 16:33:46,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:46,980 INFO L186 Difference]: Start difference. First operand has 463 places, 468 transitions, 943 flow. Second operand 3 states and 1519 transitions. [2022-04-18 16:33:46,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 467 transitions, 977 flow [2022-04-18 16:33:46,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 467 transitions, 976 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:46,986 INFO L242 Difference]: Finished difference. Result has 463 places, 467 transitions, 944 flow [2022-04-18 16:33:46,987 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=944, PETRI_PLACES=463, PETRI_TRANSITIONS=467} [2022-04-18 16:33:46,987 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -31 predicate places. [2022-04-18 16:33:46,987 INFO L478 AbstractCegarLoop]: Abstraction has has 463 places, 467 transitions, 944 flow [2022-04-18 16:33:46,988 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 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 16:33:46,988 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:46,988 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 16:33:47,008 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 16:33:47,205 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:47,206 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:47,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:47,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1050951011, now seen corresponding path program 1 times [2022-04-18 16:33:47,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:47,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753481862] [2022-04-18 16:33:47,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:47,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:47,218 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:47,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837056927] [2022-04-18 16:33:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:47,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:47,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:47,226 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 16:33:47,227 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 16:33:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:47,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:47,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:47,363 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 16:33:47,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:47,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:47,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753481862] [2022-04-18 16:33:47,364 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:47,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837056927] [2022-04-18 16:33:47,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837056927] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:47,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:47,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:47,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182054083] [2022-04-18 16:33:47,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:47,364 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:47,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:47,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:47,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:47,366 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 539 [2022-04-18 16:33:47,368 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 467 transitions, 944 flow. Second operand has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:47,368 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:47,368 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 539 [2022-04-18 16:33:47,368 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:47,408 INFO L129 PetriNetUnfolder]: 14/499 cut-off events. [2022-04-18 16:33:47,409 INFO L130 PetriNetUnfolder]: For 3/5 co-relation queries the response was YES. [2022-04-18 16:33:47,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 499 events. 14/499 cut-off events. For 3/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 925 event pairs, 2 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 493. Up to 15 conditions per place. [2022-04-18 16:33:47,410 INFO L132 encePairwiseOnDemand]: 535/539 looper letters, 11 selfloop transitions, 1 changer transitions 0/464 dead transitions. [2022-04-18 16:33:47,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 464 transitions, 962 flow [2022-04-18 16:33:47,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:47,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:47,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1524 transitions. [2022-04-18 16:33:47,413 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9424860853432282 [2022-04-18 16:33:47,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1524 transitions. [2022-04-18 16:33:47,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1524 transitions. [2022-04-18 16:33:47,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:47,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1524 transitions. [2022-04-18 16:33:47,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.0) internal successors, (1524), 3 states have internal predecessors, (1524), 0 states have call successors, (0), 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 16:33:47,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:47,419 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:47,419 INFO L186 Difference]: Start difference. First operand has 463 places, 467 transitions, 944 flow. Second operand 3 states and 1524 transitions. [2022-04-18 16:33:47,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 464 transitions, 962 flow [2022-04-18 16:33:47,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 464 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:47,425 INFO L242 Difference]: Finished difference. Result has 460 places, 464 transitions, 936 flow [2022-04-18 16:33:47,426 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=460, PETRI_TRANSITIONS=464} [2022-04-18 16:33:47,426 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -34 predicate places. [2022-04-18 16:33:47,427 INFO L478 AbstractCegarLoop]: Abstraction has has 460 places, 464 transitions, 936 flow [2022-04-18 16:33:47,427 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:47,428 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:47,428 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:47,448 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 16:33:47,648 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,SelfDestructingSolverStorable5 [2022-04-18 16:33:47,649 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:47,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1056180122, now seen corresponding path program 1 times [2022-04-18 16:33:47,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:47,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941218961] [2022-04-18 16:33:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:47,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:47,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:47,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1047608124] [2022-04-18 16:33:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:47,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:47,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:47,679 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 16:33:47,680 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 16:33:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:47,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:47,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:47,849 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 16:33:47,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:47,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:47,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941218961] [2022-04-18 16:33:47,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:47,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047608124] [2022-04-18 16:33:47,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047608124] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:47,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:47,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:47,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699857496] [2022-04-18 16:33:47,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:47,850 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:47,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:47,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:47,852 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 539 [2022-04-18 16:33:47,853 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 464 transitions, 936 flow. Second operand has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:47,853 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:47,853 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 539 [2022-04-18 16:33:47,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:47,909 INFO L129 PetriNetUnfolder]: 16/500 cut-off events. [2022-04-18 16:33:47,909 INFO L130 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2022-04-18 16:33:47,910 INFO L84 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 500 events. 16/500 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 933 event pairs, 3 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 499. Up to 22 conditions per place. [2022-04-18 16:33:47,911 INFO L132 encePairwiseOnDemand]: 536/539 looper letters, 13 selfloop transitions, 2 changer transitions 0/463 dead transitions. [2022-04-18 16:33:47,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 463 transitions, 964 flow [2022-04-18 16:33:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1525 transitions. [2022-04-18 16:33:47,914 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.943104514533086 [2022-04-18 16:33:47,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1525 transitions. [2022-04-18 16:33:47,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1525 transitions. [2022-04-18 16:33:47,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:47,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1525 transitions. [2022-04-18 16:33:47,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.3333333333333) internal successors, (1525), 3 states have internal predecessors, (1525), 0 states have call successors, (0), 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 16:33:47,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:47,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:47,918 INFO L186 Difference]: Start difference. First operand has 460 places, 464 transitions, 936 flow. Second operand 3 states and 1525 transitions. [2022-04-18 16:33:47,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 463 transitions, 964 flow [2022-04-18 16:33:47,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 463 transitions, 963 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:33:47,924 INFO L242 Difference]: Finished difference. Result has 460 places, 463 transitions, 937 flow [2022-04-18 16:33:47,924 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=937, PETRI_PLACES=460, PETRI_TRANSITIONS=463} [2022-04-18 16:33:47,925 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -34 predicate places. [2022-04-18 16:33:47,925 INFO L478 AbstractCegarLoop]: Abstraction has has 460 places, 463 transitions, 937 flow [2022-04-18 16:33:47,925 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:47,925 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:47,925 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:47,956 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 16:33:48,142 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:48,143 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:48,143 INFO L85 PathProgramCache]: Analyzing trace with hash -366173944, now seen corresponding path program 1 times [2022-04-18 16:33:48,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:48,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214157073] [2022-04-18 16:33:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:48,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:48,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:48,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1568244912] [2022-04-18 16:33:48,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:48,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:48,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:48,156 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 16:33:48,157 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 16:33:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:48,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-18 16:33:48,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:48,384 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 15 treesize of output 11 [2022-04-18 16:33:48,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,404 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 28 treesize of output 27 [2022-04-18 16:33:48,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,431 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:33:48,431 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 40 treesize of output 42 [2022-04-18 16:33:48,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:48,463 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:33:48,464 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 52 treesize of output 57 [2022-04-18 16:33:48,487 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 16:33:48,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:48,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214157073] [2022-04-18 16:33:48,487 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:48,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568244912] [2022-04-18 16:33:48,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568244912] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:48,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:48,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-04-18 16:33:48,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132264835] [2022-04-18 16:33:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:48,488 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-18 16:33:48,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:48,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-18 16:33:48,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-04-18 16:33:48,491 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 539 [2022-04-18 16:33:48,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 463 transitions, 937 flow. Second operand has 12 states, 12 states have (on average 329.0833333333333) internal successors, (3949), 12 states have internal predecessors, (3949), 0 states have call successors, (0), 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 16:33:48,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:48,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 539 [2022-04-18 16:33:48,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:51,735 INFO L129 PetriNetUnfolder]: 6966/18697 cut-off events. [2022-04-18 16:33:51,736 INFO L130 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2022-04-18 16:33:51,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29448 conditions, 18697 events. 6966/18697 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 182699 event pairs, 6252 based on Foata normal form. 0/15756 useless extension candidates. Maximal degree in co-relation 29413. Up to 5330 conditions per place. [2022-04-18 16:33:51,843 INFO L132 encePairwiseOnDemand]: 498/539 looper letters, 262 selfloop transitions, 40 changer transitions 0/589 dead transitions. [2022-04-18 16:33:51,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 589 transitions, 1797 flow [2022-04-18 16:33:51,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-18 16:33:51,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-04-18 16:33:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5195 transitions. [2022-04-18 16:33:51,851 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.642547928262214 [2022-04-18 16:33:51,851 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5195 transitions. [2022-04-18 16:33:51,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5195 transitions. [2022-04-18 16:33:51,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:51,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5195 transitions. [2022-04-18 16:33:51,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 346.3333333333333) internal successors, (5195), 15 states have internal predecessors, (5195), 0 states have call successors, (0), 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 16:33:51,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 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 16:33:51,868 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 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 16:33:51,868 INFO L186 Difference]: Start difference. First operand has 460 places, 463 transitions, 937 flow. Second operand 15 states and 5195 transitions. [2022-04-18 16:33:51,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 589 transitions, 1797 flow [2022-04-18 16:33:51,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 589 transitions, 1793 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:51,876 INFO L242 Difference]: Finished difference. Result has 482 places, 488 transitions, 1163 flow [2022-04-18 16:33:51,877 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1163, PETRI_PLACES=482, PETRI_TRANSITIONS=488} [2022-04-18 16:33:51,877 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -12 predicate places. [2022-04-18 16:33:51,877 INFO L478 AbstractCegarLoop]: Abstraction has has 482 places, 488 transitions, 1163 flow [2022-04-18 16:33:51,878 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 329.0833333333333) internal successors, (3949), 12 states have internal predecessors, (3949), 0 states have call successors, (0), 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 16:33:51,878 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:51,879 INFO L255 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:51,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-18 16:33:52,095 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:52,095 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:52,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:52,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1090927924, now seen corresponding path program 1 times [2022-04-18 16:33:52,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:52,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044972338] [2022-04-18 16:33:52,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:52,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:52,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:52,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356144681] [2022-04-18 16:33:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:52,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:52,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:52,110 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 16:33:52,111 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 16:33:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:52,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 16:33:52,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:52,334 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 15 treesize of output 11 [2022-04-18 16:33:52,352 INFO L356 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-04-18 16:33:52,352 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 28 treesize of output 27 [2022-04-18 16:33:52,381 INFO L356 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2022-04-18 16:33:52,382 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 40 treesize of output 42 [2022-04-18 16:33:52,428 INFO L356 Elim1Store]: treesize reduction 172, result has 17.3 percent of original size [2022-04-18 16:33:52,428 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 52 treesize of output 57 [2022-04-18 16:33:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 16:33:52,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:52,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044972338] [2022-04-18 16:33:52,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356144681] [2022-04-18 16:33:52,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356144681] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:52,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:52,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:33:52,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568134906] [2022-04-18 16:33:52,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:52,448 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:33:52,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:52,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:33:52,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:33:52,451 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 398 out of 539 [2022-04-18 16:33:52,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 488 transitions, 1163 flow. Second operand has 6 states, 6 states have (on average 401.1666666666667) internal successors, (2407), 6 states have internal predecessors, (2407), 0 states have call successors, (0), 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 16:33:52,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:52,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 398 of 539 [2022-04-18 16:33:52,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:55,094 INFO L129 PetriNetUnfolder]: 6966/18694 cut-off events. [2022-04-18 16:33:55,094 INFO L130 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2022-04-18 16:33:55,141 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29465 conditions, 18694 events. 6966/18694 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 182789 event pairs, 6252 based on Foata normal form. 3/15759 useless extension candidates. Maximal degree in co-relation 29421. Up to 10609 conditions per place. [2022-04-18 16:33:55,196 INFO L132 encePairwiseOnDemand]: 521/539 looper letters, 107 selfloop transitions, 30 changer transitions 0/485 dead transitions. [2022-04-18 16:33:55,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 485 transitions, 1425 flow [2022-04-18 16:33:55,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:33:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:33:55,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2508 transitions. [2022-04-18 16:33:55,200 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7755102040816326 [2022-04-18 16:33:55,200 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2508 transitions. [2022-04-18 16:33:55,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2508 transitions. [2022-04-18 16:33:55,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:55,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2508 transitions. [2022-04-18 16:33:55,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 418.0) internal successors, (2508), 6 states have internal predecessors, (2508), 0 states have call successors, (0), 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 16:33:55,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 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 16:33:55,208 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 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 16:33:55,208 INFO L186 Difference]: Start difference. First operand has 482 places, 488 transitions, 1163 flow. Second operand 6 states and 2508 transitions. [2022-04-18 16:33:55,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 485 transitions, 1425 flow [2022-04-18 16:33:55,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 485 transitions, 1404 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-04-18 16:33:55,217 INFO L242 Difference]: Finished difference. Result has 481 places, 485 transitions, 1190 flow [2022-04-18 16:33:55,218 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1190, PETRI_PLACES=481, PETRI_TRANSITIONS=485} [2022-04-18 16:33:55,219 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -13 predicate places. [2022-04-18 16:33:55,219 INFO L478 AbstractCegarLoop]: Abstraction has has 481 places, 485 transitions, 1190 flow [2022-04-18 16:33:55,219 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 401.1666666666667) internal successors, (2407), 6 states have internal predecessors, (2407), 0 states have call successors, (0), 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 16:33:55,219 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:55,220 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:55,252 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 16:33:55,454 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:55,455 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -195297394, now seen corresponding path program 1 times [2022-04-18 16:33:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:55,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810899985] [2022-04-18 16:33:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:55,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:55,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551432869] [2022-04-18 16:33:55,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:55,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:55,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:55,484 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 16:33:55,485 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 16:33:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:55,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:55,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:55,751 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 16:33:55,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:55,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:55,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810899985] [2022-04-18 16:33:55,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:55,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551432869] [2022-04-18 16:33:55,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551432869] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:55,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:55,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:55,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743218967] [2022-04-18 16:33:55,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:55,752 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:55,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:55,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:55,754 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 539 [2022-04-18 16:33:55,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 485 transitions, 1190 flow. Second operand has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:55,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:55,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 539 [2022-04-18 16:33:55,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:55,875 INFO L129 PetriNetUnfolder]: 84/1418 cut-off events. [2022-04-18 16:33:55,876 INFO L130 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-04-18 16:33:55,880 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 1418 events. 84/1418 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 7292 event pairs, 30 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1620. Up to 110 conditions per place. [2022-04-18 16:33:55,883 INFO L132 encePairwiseOnDemand]: 536/539 looper letters, 13 selfloop transitions, 2 changer transitions 0/484 dead transitions. [2022-04-18 16:33:55,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 484 transitions, 1218 flow [2022-04-18 16:33:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:55,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:55,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1525 transitions. [2022-04-18 16:33:55,886 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.943104514533086 [2022-04-18 16:33:55,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1525 transitions. [2022-04-18 16:33:55,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1525 transitions. [2022-04-18 16:33:55,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:55,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1525 transitions. [2022-04-18 16:33:55,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 508.3333333333333) internal successors, (1525), 3 states have internal predecessors, (1525), 0 states have call successors, (0), 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 16:33:55,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:55,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:55,891 INFO L186 Difference]: Start difference. First operand has 481 places, 485 transitions, 1190 flow. Second operand 3 states and 1525 transitions. [2022-04-18 16:33:55,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 484 transitions, 1218 flow [2022-04-18 16:33:55,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 484 transitions, 1158 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 16:33:55,898 INFO L242 Difference]: Finished difference. Result has 477 places, 484 transitions, 1132 flow [2022-04-18 16:33:55,899 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1128, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1132, PETRI_PLACES=477, PETRI_TRANSITIONS=484} [2022-04-18 16:33:55,899 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -17 predicate places. [2022-04-18 16:33:55,899 INFO L478 AbstractCegarLoop]: Abstraction has has 477 places, 484 transitions, 1132 flow [2022-04-18 16:33:55,900 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:55,900 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:55,900 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:55,920 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 16:33:56,117 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:56,118 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:56,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:56,118 INFO L85 PathProgramCache]: Analyzing trace with hash 497494432, now seen corresponding path program 1 times [2022-04-18 16:33:56,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:56,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454691194] [2022-04-18 16:33:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:56,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:56,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1424794311] [2022-04-18 16:33:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:56,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:56,148 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 16:33:56,162 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 16:33:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:56,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:56,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:56,435 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 16:33:56,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:56,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454691194] [2022-04-18 16:33:56,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:56,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424794311] [2022-04-18 16:33:56,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424794311] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:56,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:56,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757775417] [2022-04-18 16:33:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:56,436 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:56,438 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 500 out of 539 [2022-04-18 16:33:56,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 484 transitions, 1132 flow. Second operand has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 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 16:33:56,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:56,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 500 of 539 [2022-04-18 16:33:56,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:56,592 INFO L129 PetriNetUnfolder]: 32/930 cut-off events. [2022-04-18 16:33:56,592 INFO L130 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-04-18 16:33:56,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 930 events. 32/930 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3218 event pairs, 6 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 1038. Up to 48 conditions per place. [2022-04-18 16:33:56,596 INFO L132 encePairwiseOnDemand]: 536/539 looper letters, 16 selfloop transitions, 2 changer transitions 0/483 dead transitions. [2022-04-18 16:33:56,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 483 transitions, 1166 flow [2022-04-18 16:33:56,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:56,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:56,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1519 transitions. [2022-04-18 16:33:56,599 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9393939393939394 [2022-04-18 16:33:56,599 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1519 transitions. [2022-04-18 16:33:56,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1519 transitions. [2022-04-18 16:33:56,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:56,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1519 transitions. [2022-04-18 16:33:56,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 506.3333333333333) internal successors, (1519), 3 states have internal predecessors, (1519), 0 states have call successors, (0), 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 16:33:56,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:56,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:56,604 INFO L186 Difference]: Start difference. First operand has 477 places, 484 transitions, 1132 flow. Second operand 3 states and 1519 transitions. [2022-04-18 16:33:56,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 483 transitions, 1166 flow [2022-04-18 16:33:56,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 483 transitions, 1162 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:56,611 INFO L242 Difference]: Finished difference. Result has 476 places, 483 transitions, 1130 flow [2022-04-18 16:33:56,612 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1130, PETRI_PLACES=476, PETRI_TRANSITIONS=483} [2022-04-18 16:33:56,613 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -18 predicate places. [2022-04-18 16:33:56,613 INFO L478 AbstractCegarLoop]: Abstraction has has 476 places, 483 transitions, 1130 flow [2022-04-18 16:33:56,613 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 501.3333333333333) internal successors, (1504), 3 states have internal predecessors, (1504), 0 states have call successors, (0), 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 16:33:56,614 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:56,614 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:56,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-04-18 16:33:56,830 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:56,830 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:56,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:56,831 INFO L85 PathProgramCache]: Analyzing trace with hash 989391156, now seen corresponding path program 1 times [2022-04-18 16:33:56,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:56,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827364924] [2022-04-18 16:33:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:56,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:56,852 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:56,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158877709] [2022-04-18 16:33:56,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:56,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:56,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:56,853 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 16:33:56,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-18 16:33:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:56,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:56,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:57,136 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 16:33:57,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:57,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827364924] [2022-04-18 16:33:57,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158877709] [2022-04-18 16:33:57,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158877709] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:57,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:57,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367210473] [2022-04-18 16:33:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:57,137 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:57,139 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 503 out of 539 [2022-04-18 16:33:57,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 483 transitions, 1130 flow. Second operand has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:57,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:57,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 503 of 539 [2022-04-18 16:33:57,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:57,253 INFO L129 PetriNetUnfolder]: 43/1215 cut-off events. [2022-04-18 16:33:57,254 INFO L130 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-04-18 16:33:57,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 1215 events. 43/1215 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4880 event pairs, 0 based on Foata normal form. 0/1089 useless extension candidates. Maximal degree in co-relation 1326. Up to 37 conditions per place. [2022-04-18 16:33:57,260 INFO L132 encePairwiseOnDemand]: 533/539 looper letters, 16 selfloop transitions, 3 changer transitions 0/487 dead transitions. [2022-04-18 16:33:57,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 487 transitions, 1180 flow [2022-04-18 16:33:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1531 transitions. [2022-04-18 16:33:57,263 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9468150896722325 [2022-04-18 16:33:57,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1531 transitions. [2022-04-18 16:33:57,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1531 transitions. [2022-04-18 16:33:57,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:57,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1531 transitions. [2022-04-18 16:33:57,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 510.3333333333333) internal successors, (1531), 3 states have internal predecessors, (1531), 0 states have call successors, (0), 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 16:33:57,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:57,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:57,268 INFO L186 Difference]: Start difference. First operand has 476 places, 483 transitions, 1130 flow. Second operand 3 states and 1531 transitions. [2022-04-18 16:33:57,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 487 transitions, 1180 flow [2022-04-18 16:33:57,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 487 transitions, 1176 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:33:57,275 INFO L242 Difference]: Finished difference. Result has 474 places, 483 transitions, 1141 flow [2022-04-18 16:33:57,275 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1141, PETRI_PLACES=474, PETRI_TRANSITIONS=483} [2022-04-18 16:33:57,276 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -20 predicate places. [2022-04-18 16:33:57,276 INFO L478 AbstractCegarLoop]: Abstraction has has 474 places, 483 transitions, 1141 flow [2022-04-18 16:33:57,276 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:33:57,276 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:57,277 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:57,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-04-18 16:33:57,497 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-18 16:33:57,498 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:57,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:57,498 INFO L85 PathProgramCache]: Analyzing trace with hash 884204584, now seen corresponding path program 1 times [2022-04-18 16:33:57,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:57,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968357909] [2022-04-18 16:33:57,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:57,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:57,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:57,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [274515780] [2022-04-18 16:33:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:57,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:57,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:57,516 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:33:57,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-18 16:33:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:57,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:57,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:57,833 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 16:33:57,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:57,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968357909] [2022-04-18 16:33:57,834 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:57,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274515780] [2022-04-18 16:33:57,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274515780] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:57,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:57,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:57,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614231213] [2022-04-18 16:33:57,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:57,834 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:57,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:57,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:57,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:57,836 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 506 out of 539 [2022-04-18 16:33:57,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 483 transitions, 1141 flow. Second operand has 3 states, 3 states have (on average 507.6666666666667) internal successors, (1523), 3 states have internal predecessors, (1523), 0 states have call successors, (0), 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 16:33:57,837 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:57,837 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 506 of 539 [2022-04-18 16:33:57,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:57,990 INFO L129 PetriNetUnfolder]: 62/1526 cut-off events. [2022-04-18 16:33:57,990 INFO L130 PetriNetUnfolder]: For 26/42 co-relation queries the response was YES. [2022-04-18 16:33:57,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1726 conditions, 1526 events. 62/1526 cut-off events. For 26/42 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 7116 event pairs, 0 based on Foata normal form. 4/1364 useless extension candidates. Maximal degree in co-relation 1682. Up to 52 conditions per place. [2022-04-18 16:33:57,998 INFO L132 encePairwiseOnDemand]: 535/539 looper letters, 13 selfloop transitions, 2 changer transitions 0/486 dead transitions. [2022-04-18 16:33:57,998 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 486 transitions, 1180 flow [2022-04-18 16:33:57,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:57,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1535 transitions. [2022-04-18 16:33:58,001 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9492888064316636 [2022-04-18 16:33:58,001 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1535 transitions. [2022-04-18 16:33:58,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1535 transitions. [2022-04-18 16:33:58,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:58,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1535 transitions. [2022-04-18 16:33:58,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 511.6666666666667) internal successors, (1535), 3 states have internal predecessors, (1535), 0 states have call successors, (0), 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 16:33:58,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:58,005 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:58,005 INFO L186 Difference]: Start difference. First operand has 474 places, 483 transitions, 1141 flow. Second operand 3 states and 1535 transitions. [2022-04-18 16:33:58,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 486 transitions, 1180 flow [2022-04-18 16:33:58,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 486 transitions, 1180 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:33:58,012 INFO L242 Difference]: Finished difference. Result has 475 places, 483 transitions, 1151 flow [2022-04-18 16:33:58,013 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1151, PETRI_PLACES=475, PETRI_TRANSITIONS=483} [2022-04-18 16:33:58,014 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -19 predicate places. [2022-04-18 16:33:58,014 INFO L478 AbstractCegarLoop]: Abstraction has has 475 places, 483 transitions, 1151 flow [2022-04-18 16:33:58,014 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 507.6666666666667) internal successors, (1523), 3 states have internal predecessors, (1523), 0 states have call successors, (0), 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 16:33:58,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:58,014 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:58,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-18 16:33:58,232 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-18 16:33:58,232 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:58,232 INFO L85 PathProgramCache]: Analyzing trace with hash -682879478, now seen corresponding path program 1 times [2022-04-18 16:33:58,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:58,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691975088] [2022-04-18 16:33:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:58,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:58,249 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:58,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430566770] [2022-04-18 16:33:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:58,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:58,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:58,250 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:33:58,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-18 16:33:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:58,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:33:58,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:58,542 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 16:33:58,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:58,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:58,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691975088] [2022-04-18 16:33:58,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:58,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430566770] [2022-04-18 16:33:58,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430566770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:58,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:58,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:33:58,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199600532] [2022-04-18 16:33:58,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:58,543 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:33:58,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:58,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:33:58,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:33:58,545 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 506 out of 539 [2022-04-18 16:33:58,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 483 transitions, 1151 flow. Second operand has 3 states, 3 states have (on average 507.6666666666667) internal successors, (1523), 3 states have internal predecessors, (1523), 0 states have call successors, (0), 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 16:33:58,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:58,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 506 of 539 [2022-04-18 16:33:58,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:33:58,846 INFO L129 PetriNetUnfolder]: 108/2278 cut-off events. [2022-04-18 16:33:58,846 INFO L130 PetriNetUnfolder]: For 38/46 co-relation queries the response was YES. [2022-04-18 16:33:58,854 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 2278 events. 108/2278 cut-off events. For 38/46 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 14023 event pairs, 8 based on Foata normal form. 4/2024 useless extension candidates. Maximal degree in co-relation 2526. Up to 94 conditions per place. [2022-04-18 16:33:58,881 INFO L132 encePairwiseOnDemand]: 535/539 looper letters, 13 selfloop transitions, 2 changer transitions 0/486 dead transitions. [2022-04-18 16:33:58,882 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 486 transitions, 1190 flow [2022-04-18 16:33:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:33:58,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:33:58,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1535 transitions. [2022-04-18 16:33:58,885 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9492888064316636 [2022-04-18 16:33:58,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1535 transitions. [2022-04-18 16:33:58,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1535 transitions. [2022-04-18 16:33:58,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:33:58,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1535 transitions. [2022-04-18 16:33:58,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 511.6666666666667) internal successors, (1535), 3 states have internal predecessors, (1535), 0 states have call successors, (0), 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 16:33:58,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:58,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:33:58,891 INFO L186 Difference]: Start difference. First operand has 475 places, 483 transitions, 1151 flow. Second operand 3 states and 1535 transitions. [2022-04-18 16:33:58,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 486 transitions, 1190 flow [2022-04-18 16:33:58,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 486 transitions, 1190 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:33:58,911 INFO L242 Difference]: Finished difference. Result has 476 places, 483 transitions, 1161 flow [2022-04-18 16:33:58,911 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1161, PETRI_PLACES=476, PETRI_TRANSITIONS=483} [2022-04-18 16:33:58,912 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -18 predicate places. [2022-04-18 16:33:58,912 INFO L478 AbstractCegarLoop]: Abstraction has has 476 places, 483 transitions, 1161 flow [2022-04-18 16:33:58,913 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 507.6666666666667) internal successors, (1523), 3 states have internal predecessors, (1523), 0 states have call successors, (0), 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 16:33:58,913 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:33:58,913 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:58,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-04-18 16:33:59,113 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-18 16:33:59,114 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:33:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:33:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2008839067, now seen corresponding path program 1 times [2022-04-18 16:33:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:33:59,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395307611] [2022-04-18 16:33:59,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:59,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:33:59,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:33:59,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360417741] [2022-04-18 16:33:59,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:33:59,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:33:59,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:33:59,127 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:33:59,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-18 16:33:59,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:33:59,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-18 16:33:59,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:33:59,479 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 16:33:59,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,501 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 16:33:59,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,521 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:33:59,522 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 16:33:59,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:33:59,548 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:33:59,549 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 16:33:59,564 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 16:33:59,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:33:59,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:33:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395307611] [2022-04-18 16:33:59,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:33:59,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360417741] [2022-04-18 16:33:59,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360417741] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:33:59,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:33:59,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-18 16:33:59,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305055913] [2022-04-18 16:33:59,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:33:59,566 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 16:33:59,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:33:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 16:33:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-04-18 16:33:59,569 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 539 [2022-04-18 16:33:59,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 483 transitions, 1161 flow. Second operand has 7 states, 7 states have (on average 426.57142857142856) internal successors, (2986), 7 states have internal predecessors, (2986), 0 states have call successors, (0), 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 16:33:59,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:33:59,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 539 [2022-04-18 16:33:59,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:34:04,202 INFO L129 PetriNetUnfolder]: 13738/32998 cut-off events. [2022-04-18 16:34:04,202 INFO L130 PetriNetUnfolder]: For 103/123 co-relation queries the response was YES. [2022-04-18 16:34:04,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 55942 conditions, 32998 events. 13738/32998 cut-off events. For 103/123 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 328923 event pairs, 3900 based on Foata normal form. 16/28854 useless extension candidates. Maximal degree in co-relation 55894. Up to 13504 conditions per place. [2022-04-18 16:34:04,658 INFO L132 encePairwiseOnDemand]: 524/539 looper letters, 211 selfloop transitions, 38 changer transitions 0/632 dead transitions. [2022-04-18 16:34:04,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 632 transitions, 1959 flow [2022-04-18 16:34:04,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-18 16:34:04,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-04-18 16:34:04,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3213 transitions. [2022-04-18 16:34:04,664 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8515769944341373 [2022-04-18 16:34:04,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3213 transitions. [2022-04-18 16:34:04,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3213 transitions. [2022-04-18 16:34:04,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:34:04,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3213 transitions. [2022-04-18 16:34:04,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 459.0) internal successors, (3213), 7 states have internal predecessors, (3213), 0 states have call successors, (0), 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 16:34:04,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 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 16:34:04,674 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 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 16:34:04,674 INFO L186 Difference]: Start difference. First operand has 476 places, 483 transitions, 1161 flow. Second operand 7 states and 3213 transitions. [2022-04-18 16:34:04,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 632 transitions, 1959 flow [2022-04-18 16:34:04,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 632 transitions, 1959 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 16:34:04,685 INFO L242 Difference]: Finished difference. Result has 487 places, 519 transitions, 1410 flow [2022-04-18 16:34:04,685 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1410, PETRI_PLACES=487, PETRI_TRANSITIONS=519} [2022-04-18 16:34:04,685 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, -7 predicate places. [2022-04-18 16:34:04,686 INFO L478 AbstractCegarLoop]: Abstraction has has 487 places, 519 transitions, 1410 flow [2022-04-18 16:34:04,686 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 426.57142857142856) internal successors, (2986), 7 states have internal predecessors, (2986), 0 states have call successors, (0), 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 16:34:04,686 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:34:04,686 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:04,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-18 16:34:04,904 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-04-18 16:34:04,905 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:34:04,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:34:04,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1533765810, now seen corresponding path program 1 times [2022-04-18 16:34:04,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:34:04,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678906623] [2022-04-18 16:34:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:04,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:34:04,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:34:04,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211335072] [2022-04-18 16:34:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:04,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:34:04,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:34:04,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-18 16:34:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:34:05,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-04-18 16:34:05,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:34:05,347 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 16:34:05,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:34:05,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:34:05,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678906623] [2022-04-18 16:34:05,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:34:05,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211335072] [2022-04-18 16:34:05,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211335072] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:34:05,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:34:05,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 16:34:05,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388075212] [2022-04-18 16:34:05,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:34:05,349 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 16:34:05,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:34:05,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 16:34:05,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-18 16:34:05,354 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 539 [2022-04-18 16:34:05,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 519 transitions, 1410 flow. Second operand has 7 states, 7 states have (on average 443.85714285714283) internal successors, (3107), 7 states have internal predecessors, (3107), 0 states have call successors, (0), 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 16:34:05,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:34:05,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 539 [2022-04-18 16:34:05,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:34:07,439 INFO L129 PetriNetUnfolder]: 2055/13695 cut-off events. [2022-04-18 16:34:07,439 INFO L130 PetriNetUnfolder]: For 2058/3679 co-relation queries the response was YES. [2022-04-18 16:34:07,535 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22027 conditions, 13695 events. 2055/13695 cut-off events. For 2058/3679 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 141914 event pairs, 355 based on Foata normal form. 0/12376 useless extension candidates. Maximal degree in co-relation 21973. Up to 1949 conditions per place. [2022-04-18 16:34:07,576 INFO L132 encePairwiseOnDemand]: 523/539 looper letters, 210 selfloop transitions, 25 changer transitions 0/644 dead transitions. [2022-04-18 16:34:07,576 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 644 transitions, 2292 flow [2022-04-18 16:34:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-18 16:34:07,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-04-18 16:34:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6793 transitions. [2022-04-18 16:34:07,584 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8401978973407545 [2022-04-18 16:34:07,585 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6793 transitions. [2022-04-18 16:34:07,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6793 transitions. [2022-04-18 16:34:07,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:34:07,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6793 transitions. [2022-04-18 16:34:07,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 452.8666666666667) internal successors, (6793), 15 states have internal predecessors, (6793), 0 states have call successors, (0), 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 16:34:07,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 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 16:34:07,604 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 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 16:34:07,604 INFO L186 Difference]: Start difference. First operand has 487 places, 519 transitions, 1410 flow. Second operand 15 states and 6793 transitions. [2022-04-18 16:34:07,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 644 transitions, 2292 flow [2022-04-18 16:34:07,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 644 transitions, 2291 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:34:07,626 INFO L242 Difference]: Finished difference. Result has 507 places, 535 transitions, 1540 flow [2022-04-18 16:34:07,627 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1540, PETRI_PLACES=507, PETRI_TRANSITIONS=535} [2022-04-18 16:34:07,627 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, 13 predicate places. [2022-04-18 16:34:07,627 INFO L478 AbstractCegarLoop]: Abstraction has has 507 places, 535 transitions, 1540 flow [2022-04-18 16:34:07,628 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 443.85714285714283) internal successors, (3107), 7 states have internal predecessors, (3107), 0 states have call successors, (0), 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 16:34:07,628 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:34:07,628 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:07,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-18 16:34:07,862 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-18 16:34:07,862 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:34:07,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:34:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash 163792892, now seen corresponding path program 1 times [2022-04-18 16:34:07,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:34:07,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102622616] [2022-04-18 16:34:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:34:07,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:34:07,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119431831] [2022-04-18 16:34:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:07,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:07,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:34:07,885 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:34:07,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-18 16:34:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:34:08,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 16:34:08,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:34:08,219 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 16:34:08,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:34:08,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:34:08,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102622616] [2022-04-18 16:34:08,220 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:34:08,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119431831] [2022-04-18 16:34:08,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119431831] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:34:08,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:34:08,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:34:08,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809696574] [2022-04-18 16:34:08,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:34:08,221 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-18 16:34:08,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:34:08,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-18 16:34:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-18 16:34:08,223 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 474 out of 539 [2022-04-18 16:34:08,225 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 535 transitions, 1540 flow. Second operand has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 16:34:08,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:34:08,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 474 of 539 [2022-04-18 16:34:08,225 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:34:10,044 INFO L129 PetriNetUnfolder]: 1569/10477 cut-off events. [2022-04-18 16:34:10,044 INFO L130 PetriNetUnfolder]: For 1136/1674 co-relation queries the response was YES. [2022-04-18 16:34:10,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16342 conditions, 10477 events. 1569/10477 cut-off events. For 1136/1674 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 109100 event pairs, 477 based on Foata normal form. 0/9351 useless extension candidates. Maximal degree in co-relation 16302. Up to 2323 conditions per place. [2022-04-18 16:34:10,219 INFO L132 encePairwiseOnDemand]: 532/539 looper letters, 58 selfloop transitions, 6 changer transitions 0/553 dead transitions. [2022-04-18 16:34:10,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 553 transitions, 1706 flow [2022-04-18 16:34:10,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:34:10,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:34:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2909 transitions. [2022-04-18 16:34:10,225 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8995052566481138 [2022-04-18 16:34:10,225 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2909 transitions. [2022-04-18 16:34:10,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2909 transitions. [2022-04-18 16:34:10,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:34:10,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2909 transitions. [2022-04-18 16:34:10,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 484.8333333333333) internal successors, (2909), 6 states have internal predecessors, (2909), 0 states have call successors, (0), 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 16:34:10,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 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 16:34:10,234 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 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 16:34:10,234 INFO L186 Difference]: Start difference. First operand has 507 places, 535 transitions, 1540 flow. Second operand 6 states and 2909 transitions. [2022-04-18 16:34:10,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 553 transitions, 1706 flow [2022-04-18 16:34:10,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 553 transitions, 1704 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-04-18 16:34:10,250 INFO L242 Difference]: Finished difference. Result has 515 places, 537 transitions, 1565 flow [2022-04-18 16:34:10,251 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1565, PETRI_PLACES=515, PETRI_TRANSITIONS=537} [2022-04-18 16:34:10,251 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, 21 predicate places. [2022-04-18 16:34:10,251 INFO L478 AbstractCegarLoop]: Abstraction has has 515 places, 537 transitions, 1565 flow [2022-04-18 16:34:10,252 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 478.0) internal successors, (2390), 5 states have internal predecessors, (2390), 0 states have call successors, (0), 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 16:34:10,252 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:34:10,252 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:10,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-18 16:34:10,465 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-18 16:34:10,466 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:34:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:34:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1629385200, now seen corresponding path program 1 times [2022-04-18 16:34:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:34:10,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345738517] [2022-04-18 16:34:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:10,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:34:10,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:34:10,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1562995270] [2022-04-18 16:34:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:10,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:10,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:34:10,489 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:34:10,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-18 16:34:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:34:10,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-18 16:34:10,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:34:10,878 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 16:34:10,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,893 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 16:34:10,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,914 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:34:10,914 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 16:34:10,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:10,952 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:34:10,952 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 16:34:10,969 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 16:34:10,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:34:10,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:34:10,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345738517] [2022-04-18 16:34:10,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:34:10,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562995270] [2022-04-18 16:34:10,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562995270] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:34:10,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:34:10,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-18 16:34:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763210682] [2022-04-18 16:34:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:34:10,971 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-18 16:34:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:34:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-18 16:34:10,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-04-18 16:34:10,973 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 539 [2022-04-18 16:34:10,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 537 transitions, 1565 flow. Second operand has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 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 16:34:10,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:34:10,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 539 [2022-04-18 16:34:10,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:34:18,125 INFO L129 PetriNetUnfolder]: 14311/40222 cut-off events. [2022-04-18 16:34:18,125 INFO L130 PetriNetUnfolder]: For 13931/13991 co-relation queries the response was YES. [2022-04-18 16:34:18,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79737 conditions, 40222 events. 14311/40222 cut-off events. For 13931/13991 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 429996 event pairs, 7680 based on Foata normal form. 48/36591 useless extension candidates. Maximal degree in co-relation 79693. Up to 20988 conditions per place. [2022-04-18 16:34:18,981 INFO L132 encePairwiseOnDemand]: 528/539 looper letters, 208 selfloop transitions, 38 changer transitions 0/647 dead transitions. [2022-04-18 16:34:18,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 647 transitions, 2374 flow [2022-04-18 16:34:18,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-18 16:34:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-04-18 16:34:18,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3158 transitions. [2022-04-18 16:34:18,986 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8369997349589187 [2022-04-18 16:34:18,986 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3158 transitions. [2022-04-18 16:34:18,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3158 transitions. [2022-04-18 16:34:18,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:34:18,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3158 transitions. [2022-04-18 16:34:18,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 451.14285714285717) internal successors, (3158), 7 states have internal predecessors, (3158), 0 states have call successors, (0), 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 16:34:18,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 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 16:34:18,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 539.0) internal successors, (4312), 8 states have internal predecessors, (4312), 0 states have call successors, (0), 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 16:34:18,994 INFO L186 Difference]: Start difference. First operand has 515 places, 537 transitions, 1565 flow. Second operand 7 states and 3158 transitions. [2022-04-18 16:34:18,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 647 transitions, 2374 flow [2022-04-18 16:34:19,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 647 transitions, 2368 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 16:34:19,050 INFO L242 Difference]: Finished difference. Result has 524 places, 573 transitions, 1904 flow [2022-04-18 16:34:19,051 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1904, PETRI_PLACES=524, PETRI_TRANSITIONS=573} [2022-04-18 16:34:19,051 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, 30 predicate places. [2022-04-18 16:34:19,051 INFO L478 AbstractCegarLoop]: Abstraction has has 524 places, 573 transitions, 1904 flow [2022-04-18 16:34:19,052 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 427.42857142857144) internal successors, (2992), 7 states have internal predecessors, (2992), 0 states have call successors, (0), 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 16:34:19,052 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:34:19,052 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:19,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-18 16:34:19,268 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:19,269 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:34:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:34:19,269 INFO L85 PathProgramCache]: Analyzing trace with hash 90239493, now seen corresponding path program 1 times [2022-04-18 16:34:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:34:19,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239056405] [2022-04-18 16:34:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:34:19,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:34:19,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335180639] [2022-04-18 16:34:19,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:19,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:19,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:34:19,282 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:34:19,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-18 16:34:19,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:34:19,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 16:34:19,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:34:19,738 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 16:34:19,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:34:19,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:34:19,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239056405] [2022-04-18 16:34:19,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:34:19,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335180639] [2022-04-18 16:34:19,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335180639] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:34:19,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:34:19,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:34:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298168772] [2022-04-18 16:34:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:34:19,740 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-18 16:34:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:34:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-18 16:34:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-18 16:34:19,743 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 487 out of 539 [2022-04-18 16:34:19,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 573 transitions, 1904 flow. Second operand has 5 states, 5 states have (on average 490.8) internal successors, (2454), 5 states have internal predecessors, (2454), 0 states have call successors, (0), 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 16:34:19,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:34:19,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 487 of 539 [2022-04-18 16:34:19,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:34:21,995 INFO L129 PetriNetUnfolder]: 1645/13365 cut-off events. [2022-04-18 16:34:21,995 INFO L130 PetriNetUnfolder]: For 2729/3275 co-relation queries the response was YES. [2022-04-18 16:34:22,055 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20241 conditions, 13365 events. 1645/13365 cut-off events. For 2729/3275 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 140028 event pairs, 246 based on Foata normal form. 21/12190 useless extension candidates. Maximal degree in co-relation 20192. Up to 1633 conditions per place. [2022-04-18 16:34:22,078 INFO L132 encePairwiseOnDemand]: 531/539 looper letters, 40 selfloop transitions, 7 changer transitions 0/584 dead transitions. [2022-04-18 16:34:22,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 584 transitions, 2032 flow [2022-04-18 16:34:22,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 16:34:22,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 16:34:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2968 transitions. [2022-04-18 16:34:22,082 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9177489177489178 [2022-04-18 16:34:22,082 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2968 transitions. [2022-04-18 16:34:22,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2968 transitions. [2022-04-18 16:34:22,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:34:22,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2968 transitions. [2022-04-18 16:34:22,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 494.6666666666667) internal successors, (2968), 6 states have internal predecessors, (2968), 0 states have call successors, (0), 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 16:34:22,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 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 16:34:22,091 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 539.0) internal successors, (3773), 7 states have internal predecessors, (3773), 0 states have call successors, (0), 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 16:34:22,091 INFO L186 Difference]: Start difference. First operand has 524 places, 573 transitions, 1904 flow. Second operand 6 states and 2968 transitions. [2022-04-18 16:34:22,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 584 transitions, 2032 flow [2022-04-18 16:34:22,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 584 transitions, 2031 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 16:34:22,114 INFO L242 Difference]: Finished difference. Result has 530 places, 574 transitions, 1930 flow [2022-04-18 16:34:22,115 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1930, PETRI_PLACES=530, PETRI_TRANSITIONS=574} [2022-04-18 16:34:22,116 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, 36 predicate places. [2022-04-18 16:34:22,116 INFO L478 AbstractCegarLoop]: Abstraction has has 530 places, 574 transitions, 1930 flow [2022-04-18 16:34:22,116 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 490.8) internal successors, (2454), 5 states have internal predecessors, (2454), 0 states have call successors, (0), 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 16:34:22,116 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:34:22,121 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:22,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-04-18 16:34:22,341 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:22,341 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:34:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:34:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2014667114, now seen corresponding path program 1 times [2022-04-18 16:34:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:34:22,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136833513] [2022-04-18 16:34:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:22,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:34:22,352 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:34:22,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140424231] [2022-04-18 16:34:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:22,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:22,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:34:22,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:34:22,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-18 16:34:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:34:22,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 29 conjunts are in the unsatisfiable core [2022-04-18 16:34:22,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:34:22,879 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 15 treesize of output 11 [2022-04-18 16:34:22,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,898 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 28 treesize of output 27 [2022-04-18 16:34:22,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,931 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:34:22,931 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 40 treesize of output 42 [2022-04-18 16:34:22,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 16:34:22,963 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 16:34:22,963 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 52 treesize of output 57 [2022-04-18 16:34:22,985 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 16:34:22,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:34:22,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:34:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136833513] [2022-04-18 16:34:22,985 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:34:22,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140424231] [2022-04-18 16:34:22,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140424231] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:34:22,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:34:22,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-04-18 16:34:22,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463486366] [2022-04-18 16:34:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:34:22,986 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-18 16:34:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:34:22,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-18 16:34:22,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-18 16:34:22,989 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 348 out of 539 [2022-04-18 16:34:22,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 574 transitions, 1930 flow. Second operand has 13 states, 13 states have (on average 352.53846153846155) internal successors, (4583), 13 states have internal predecessors, (4583), 0 states have call successors, (0), 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 16:34:22,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:34:22,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 348 of 539 [2022-04-18 16:34:22,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:34:33,491 INFO L129 PetriNetUnfolder]: 17347/47381 cut-off events. [2022-04-18 16:34:33,491 INFO L130 PetriNetUnfolder]: For 22185/22617 co-relation queries the response was YES. [2022-04-18 16:34:34,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102848 conditions, 47381 events. 17347/47381 cut-off events. For 22185/22617 co-relation queries the response was YES. Maximal size of possible extension queue 804. Compared 508191 event pairs, 10584 based on Foata normal form. 372/43813 useless extension candidates. Maximal degree in co-relation 102797. Up to 26756 conditions per place. [2022-04-18 16:34:34,250 INFO L132 encePairwiseOnDemand]: 521/539 looper letters, 321 selfloop transitions, 19 changer transitions 0/672 dead transitions. [2022-04-18 16:34:34,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 672 transitions, 2956 flow [2022-04-18 16:34:34,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-18 16:34:34,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-04-18 16:34:34,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 5448 transitions. [2022-04-18 16:34:34,256 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6738404452690167 [2022-04-18 16:34:34,256 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 5448 transitions. [2022-04-18 16:34:34,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 5448 transitions. [2022-04-18 16:34:34,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:34:34,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 5448 transitions. [2022-04-18 16:34:34,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 363.2) internal successors, (5448), 15 states have internal predecessors, (5448), 0 states have call successors, (0), 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 16:34:34,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 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 16:34:34,268 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 539.0) internal successors, (8624), 16 states have internal predecessors, (8624), 0 states have call successors, (0), 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 16:34:34,268 INFO L186 Difference]: Start difference. First operand has 530 places, 574 transitions, 1930 flow. Second operand 15 states and 5448 transitions. [2022-04-18 16:34:34,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 672 transitions, 2956 flow [2022-04-18 16:34:34,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 672 transitions, 2947 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-04-18 16:34:34,440 INFO L242 Difference]: Finished difference. Result has 546 places, 579 transitions, 1994 flow [2022-04-18 16:34:34,440 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=574, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=555, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1994, PETRI_PLACES=546, PETRI_TRANSITIONS=579} [2022-04-18 16:34:34,441 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, 52 predicate places. [2022-04-18 16:34:34,441 INFO L478 AbstractCegarLoop]: Abstraction has has 546 places, 579 transitions, 1994 flow [2022-04-18 16:34:34,442 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 352.53846153846155) internal successors, (4583), 13 states have internal predecessors, (4583), 0 states have call successors, (0), 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 16:34:34,442 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:34:34,442 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:34,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-04-18 16:34:34,655 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:34,656 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:34:34,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:34:34,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1531250900, now seen corresponding path program 1 times [2022-04-18 16:34:34,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:34:34,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776890510] [2022-04-18 16:34:34,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:34,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:34:34,669 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:34:34,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714762985] [2022-04-18 16:34:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:34,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:34,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:34:34,674 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:34:34,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-18 16:34:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:34:34,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-18 16:34:34,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:34:35,040 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 16:34:35,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:34:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:34:35,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776890510] [2022-04-18 16:34:35,041 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:34:35,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714762985] [2022-04-18 16:34:35,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714762985] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:34:35,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:34:35,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 16:34:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666659850] [2022-04-18 16:34:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:34:35,042 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 16:34:35,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:34:35,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 16:34:35,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 16:34:35,044 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 497 out of 539 [2022-04-18 16:34:35,045 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 579 transitions, 1994 flow. Second operand has 3 states, 3 states have (on average 499.6666666666667) internal successors, (1499), 3 states have internal predecessors, (1499), 0 states have call successors, (0), 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 16:34:35,045 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:34:35,045 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 497 of 539 [2022-04-18 16:34:35,045 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:34:37,290 INFO L129 PetriNetUnfolder]: 1587/12685 cut-off events. [2022-04-18 16:34:37,290 INFO L130 PetriNetUnfolder]: For 2579/3119 co-relation queries the response was YES. [2022-04-18 16:34:37,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19528 conditions, 12685 events. 1587/12685 cut-off events. For 2579/3119 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 131196 event pairs, 202 based on Foata normal form. 24/11625 useless extension candidates. Maximal degree in co-relation 19472. Up to 1613 conditions per place. [2022-04-18 16:34:37,402 INFO L132 encePairwiseOnDemand]: 536/539 looper letters, 19 selfloop transitions, 2 changer transitions 0/578 dead transitions. [2022-04-18 16:34:37,402 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 578 transitions, 2034 flow [2022-04-18 16:34:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 16:34:37,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 16:34:37,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1513 transitions. [2022-04-18 16:34:37,404 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9356833642547928 [2022-04-18 16:34:37,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1513 transitions. [2022-04-18 16:34:37,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1513 transitions. [2022-04-18 16:34:37,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:34:37,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1513 transitions. [2022-04-18 16:34:37,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 504.3333333333333) internal successors, (1513), 3 states have internal predecessors, (1513), 0 states have call successors, (0), 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 16:34:37,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:34:37,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 539.0) internal successors, (2156), 4 states have internal predecessors, (2156), 0 states have call successors, (0), 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 16:34:37,407 INFO L186 Difference]: Start difference. First operand has 546 places, 579 transitions, 1994 flow. Second operand 3 states and 1513 transitions. [2022-04-18 16:34:37,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 578 transitions, 2034 flow [2022-04-18 16:34:37,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 578 transitions, 2009 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-04-18 16:34:37,428 INFO L242 Difference]: Finished difference. Result has 538 places, 578 transitions, 1971 flow [2022-04-18 16:34:37,429 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=539, PETRI_DIFFERENCE_MINUEND_FLOW=1967, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1971, PETRI_PLACES=538, PETRI_TRANSITIONS=578} [2022-04-18 16:34:37,429 INFO L335 CegarLoopForPetriNet]: 494 programPoint places, 44 predicate places. [2022-04-18 16:34:37,429 INFO L478 AbstractCegarLoop]: Abstraction has has 538 places, 578 transitions, 1971 flow [2022-04-18 16:34:37,429 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 499.6666666666667) internal successors, (1499), 3 states have internal predecessors, (1499), 0 states have call successors, (0), 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 16:34:37,429 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:34:37,430 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:37,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-04-18 16:34:37,643 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:37,644 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 68 more)] === [2022-04-18 16:34:37,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:34:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1952047228, now seen corresponding path program 1 times [2022-04-18 16:34:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:34:37,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707835415] [2022-04-18 16:34:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:37,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:34:37,661 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:34:37,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643764333] [2022-04-18 16:34:37,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:34:37,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:34:37,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:34:37,662 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 16:34:37,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-04-18 16:34:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 16:34:37,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 16:34:37,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:34:38,014 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 15 treesize of output 11 [2022-04-18 16:34:38,027 INFO L356 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-04-18 16:34:38,028 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 28 treesize of output 27 [2022-04-18 16:34:38,051 INFO L356 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2022-04-18 16:34:38,052 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 40 treesize of output 42 [2022-04-18 16:34:38,089 INFO L356 Elim1Store]: treesize reduction 172, result has 17.3 percent of original size [2022-04-18 16:34:38,089 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 52 treesize of output 57 [2022-04-18 16:34:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-04-18 16:34:38,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 16:34:38,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:34:38,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707835415] [2022-04-18 16:34:38,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:34:38,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643764333] [2022-04-18 16:34:38,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643764333] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 16:34:38,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 16:34:38,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 16:34:38,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325183162] [2022-04-18 16:34:38,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 16:34:38,106 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 16:34:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:34:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 16:34:38,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 16:34:38,108 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 539 [2022-04-18 16:34:38,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 578 transitions, 1971 flow. Second operand has 6 states, 6 states have (on average 424.5) internal successors, (2547), 6 states have internal predecessors, (2547), 0 states have call successors, (0), 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 16:34:38,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:34:38,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 539 [2022-04-18 16:34:38,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand