./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:51:20,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:51:20,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:51:20,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:51:20,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:51:20,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:51:20,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:51:20,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:51:20,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:51:20,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:51:20,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:51:20,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:51:20,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:51:20,540 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:51:20,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:51:20,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:51:20,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:51:20,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:51:20,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:51:20,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:51:20,553 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:51:20,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:51:20,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:51:20,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:51:20,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:51:20,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:51:20,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:51:20,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:51:20,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:51:20,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:51:20,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:51:20,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:51:20,563 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:51:20,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:51:20,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:51:20,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:51:20,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:51:20,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:51:20,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:51:20,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:51:20,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:51:20,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:51:20,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:51:20,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:51:20,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:51:20,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:51:20,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:51:20,593 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:51:20,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:51:20,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:51:20,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:51:20,594 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:51:20,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:51:20,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:51:20,595 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:51:20,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:51:20,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:51:20,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:51:20,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:51:20,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:51:20,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:51:20,596 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:51:20,596 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:51:20,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:51:20,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:51:20,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:51:20,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:51:20,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:51:20,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:51:20,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:20,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:51:20,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:51:20,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:51:20,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:51:20,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:51:20,599 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:51:20,599 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:51:20,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:51:20,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dda5467f7679a243042daf02aae11f74f39b907c2525dfc042cb8ad8b69dcfc9 [2022-04-18 15:51:20,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:51:20,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:51:20,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:51:20,840 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:51:20,840 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:51:20,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-04-18 15:51:20,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb13563b2/b8aeafa31fb2414ea96a0e9fbccfe904/FLAG11624797e [2022-04-18 15:51:21,345 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:51:21,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i [2022-04-18 15:51:21,357 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb13563b2/b8aeafa31fb2414ea96a0e9fbccfe904/FLAG11624797e [2022-04-18 15:51:21,371 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb13563b2/b8aeafa31fb2414ea96a0e9fbccfe904 [2022-04-18 15:51:21,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:51:21,374 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:51:21,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:21,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:51:21,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:51:21,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:21,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a60758e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21, skipping insertion in model container [2022-04-18 15:51:21,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:21,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:51:21,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:51:21,748 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-04-18 15:51:21,770 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,772 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,773 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,774 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:21,822 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:51:21,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_92-evilcollapse_racing.i[47038,47051] [2022-04-18 15:51:21,855 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,856 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,856 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,857 WARN L1550 CHandler]: Possible shadowing of function new [2022-04-18 15:51:21,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:51:21,906 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:51:21,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21 WrapperNode [2022-04-18 15:51:21,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:51:21,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:21,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:51:21,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:51:21,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:21,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:21,990 INFO L137 Inliner]: procedures = 278, calls = 51, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 355 [2022-04-18 15:51:21,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:51:21,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:51:21,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:51:21,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:51:21,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:21,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:22,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:22,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:22,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:22,114 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:22,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:22,120 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:51:22,120 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:51:22,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:51:22,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:51:22,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (1/1) ... [2022-04-18 15:51:22,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:51:22,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:22,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 15:51:22,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 15:51:22,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:51:22,205 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:51:22,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:51:22,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:51:22,206 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:51:22,298 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:51:22,299 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:51:22,696 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:51:22,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:51:22,704 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-04-18 15:51:22,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:22 BoogieIcfgContainer [2022-04-18 15:51:22,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:51:22,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:51:22,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:51:22,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:51:22,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:51:21" (1/3) ... [2022-04-18 15:51:22,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e701be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:22, skipping insertion in model container [2022-04-18 15:51:22,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:51:21" (2/3) ... [2022-04-18 15:51:22,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34e701be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:51:22, skipping insertion in model container [2022-04-18 15:51:22,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:51:22" (3/3) ... [2022-04-18 15:51:22,715 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_92-evilcollapse_racing.i [2022-04-18 15:51:22,719 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:51:22,720 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:51:22,720 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-04-18 15:51:22,720 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:51:22,801 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:51:22,843 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:51:22,849 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 15:51:22,850 INFO L341 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-04-18 15:51:22,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 385 places, 408 transitions, 824 flow [2022-04-18 15:51:22,982 INFO L129 PetriNetUnfolder]: 28/431 cut-off events. [2022-04-18 15:51:22,982 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2022-04-18 15:51:22,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 431 events. 28/431 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 920 event pairs, 0 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 262. Up to 4 conditions per place. [2022-04-18 15:51:22,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 408 transitions, 824 flow [2022-04-18 15:51:22,995 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 408 transitions, 824 flow [2022-04-18 15:51:23,034 INFO L129 PetriNetUnfolder]: 1/51 cut-off events. [2022-04-18 15:51:23,035 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:51:23,035 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:23,036 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] [2022-04-18 15:51:23,037 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:23,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2121220419, now seen corresponding path program 1 times [2022-04-18 15:51:23,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:23,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393425704] [2022-04-18 15:51:23,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:23,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:23,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393425704] [2022-04-18 15:51:23,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393425704] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:23,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:23,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:23,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889018744] [2022-04-18 15:51:23,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:23,336 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:23,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:23,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:23,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:23,364 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 408 [2022-04-18 15:51:23,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 408 transitions, 824 flow. Second operand has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:23,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:23,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 408 [2022-04-18 15:51:23,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:23,698 INFO L129 PetriNetUnfolder]: 277/1295 cut-off events. [2022-04-18 15:51:23,698 INFO L130 PetriNetUnfolder]: For 7/14 co-relation queries the response was YES. [2022-04-18 15:51:23,701 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 1295 events. 277/1295 cut-off events. For 7/14 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6566 event pairs, 252 based on Foata normal form. 191/1338 useless extension candidates. Maximal degree in co-relation 1591. Up to 652 conditions per place. [2022-04-18 15:51:23,705 INFO L132 encePairwiseOnDemand]: 376/408 looper letters, 134 selfloop transitions, 10 changer transitions 2/385 dead transitions. [2022-04-18 15:51:23,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 385 transitions, 1066 flow [2022-04-18 15:51:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:23,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1612 transitions. [2022-04-18 15:51:23,719 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6584967320261438 [2022-04-18 15:51:23,719 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1612 transitions. [2022-04-18 15:51:23,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1612 transitions. [2022-04-18 15:51:23,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:23,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1612 transitions. [2022-04-18 15:51:23,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.6666666666667) internal successors, (1612), 6 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:23,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:23,737 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:23,739 INFO L186 Difference]: Start difference. First operand has 385 places, 408 transitions, 824 flow. Second operand 6 states and 1612 transitions. [2022-04-18 15:51:23,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 385 transitions, 1066 flow [2022-04-18 15:51:23,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 385 transitions, 1066 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:51:23,748 INFO L242 Difference]: Finished difference. Result has 387 places, 383 transitions, 794 flow [2022-04-18 15:51:23,750 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=387, PETRI_TRANSITIONS=383} [2022-04-18 15:51:23,753 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 2 predicate places. [2022-04-18 15:51:23,753 INFO L478 AbstractCegarLoop]: Abstraction has has 387 places, 383 transitions, 794 flow [2022-04-18 15:51:23,754 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 242.5) internal successors, (1455), 6 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:23,754 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:23,754 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 15:51:23,755 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:51:23,755 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:23,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash 706775937, now seen corresponding path program 1 times [2022-04-18 15:51:23,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:23,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870565495] [2022-04-18 15:51:23,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:23,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:23,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:23,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870565495] [2022-04-18 15:51:23,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870565495] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:23,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:23,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:23,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707405395] [2022-04-18 15:51:23,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:23,842 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:23,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:23,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:23,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:23,844 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 408 [2022-04-18 15:51:23,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 383 transitions, 794 flow. Second operand has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:23,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:23,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 408 [2022-04-18 15:51:23,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:24,118 INFO L129 PetriNetUnfolder]: 277/1291 cut-off events. [2022-04-18 15:51:24,119 INFO L130 PetriNetUnfolder]: For 9/16 co-relation queries the response was YES. [2022-04-18 15:51:24,121 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 1291 events. 277/1291 cut-off events. For 9/16 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6533 event pairs, 252 based on Foata normal form. 0/1147 useless extension candidates. Maximal degree in co-relation 1772. Up to 650 conditions per place. [2022-04-18 15:51:24,125 INFO L132 encePairwiseOnDemand]: 396/408 looper letters, 132 selfloop transitions, 10 changer transitions 0/381 dead transitions. [2022-04-18 15:51:24,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 381 transitions, 1074 flow [2022-04-18 15:51:24,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1590 transitions. [2022-04-18 15:51:24,129 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6495098039215687 [2022-04-18 15:51:24,129 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1590 transitions. [2022-04-18 15:51:24,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1590 transitions. [2022-04-18 15:51:24,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:24,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1590 transitions. [2022-04-18 15:51:24,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,137 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,137 INFO L186 Difference]: Start difference. First operand has 387 places, 383 transitions, 794 flow. Second operand 6 states and 1590 transitions. [2022-04-18 15:51:24,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 381 transitions, 1074 flow [2022-04-18 15:51:24,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 381 transitions, 1054 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:24,144 INFO L242 Difference]: Finished difference. Result has 383 places, 381 transitions, 790 flow [2022-04-18 15:51:24,145 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=790, PETRI_PLACES=383, PETRI_TRANSITIONS=381} [2022-04-18 15:51:24,145 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, -2 predicate places. [2022-04-18 15:51:24,146 INFO L478 AbstractCegarLoop]: Abstraction has has 383 places, 381 transitions, 790 flow [2022-04-18 15:51:24,147 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 243.5) internal successors, (1461), 6 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,147 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:24,147 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:24,147 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:51:24,147 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:24,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:24,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1578368604, now seen corresponding path program 1 times [2022-04-18 15:51:24,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:24,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262366209] [2022-04-18 15:51:24,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:24,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:24,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:24,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262366209] [2022-04-18 15:51:24,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262366209] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:24,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:24,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:51:24,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967330259] [2022-04-18 15:51:24,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:24,194 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:24,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:24,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:24,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:24,197 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 408 [2022-04-18 15:51:24,198 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 381 transitions, 790 flow. Second operand has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:24,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 408 [2022-04-18 15:51:24,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:24,252 INFO L129 PetriNetUnfolder]: 7/526 cut-off events. [2022-04-18 15:51:24,252 INFO L130 PetriNetUnfolder]: For 5/6 co-relation queries the response was YES. [2022-04-18 15:51:24,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 526 events. 7/526 cut-off events. For 5/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1145 event pairs, 0 based on Foata normal form. 0/489 useless extension candidates. Maximal degree in co-relation 411. Up to 13 conditions per place. [2022-04-18 15:51:24,254 INFO L132 encePairwiseOnDemand]: 405/408 looper letters, 17 selfloop transitions, 2 changer transitions 0/388 dead transitions. [2022-04-18 15:51:24,254 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 388 transitions, 842 flow [2022-04-18 15:51:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1145 transitions. [2022-04-18 15:51:24,257 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9354575163398693 [2022-04-18 15:51:24,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1145 transitions. [2022-04-18 15:51:24,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1145 transitions. [2022-04-18 15:51:24,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:24,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1145 transitions. [2022-04-18 15:51:24,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 381.6666666666667) internal successors, (1145), 3 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,262 INFO L186 Difference]: Start difference. First operand has 383 places, 381 transitions, 790 flow. Second operand 3 states and 1145 transitions. [2022-04-18 15:51:24,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 388 transitions, 842 flow [2022-04-18 15:51:24,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 388 transitions, 822 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:24,268 INFO L242 Difference]: Finished difference. Result has 381 places, 382 transitions, 782 flow [2022-04-18 15:51:24,269 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=782, PETRI_PLACES=381, PETRI_TRANSITIONS=382} [2022-04-18 15:51:24,269 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, -4 predicate places. [2022-04-18 15:51:24,270 INFO L478 AbstractCegarLoop]: Abstraction has has 381 places, 382 transitions, 782 flow [2022-04-18 15:51:24,270 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 376.0) internal successors, (1128), 3 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,270 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:24,271 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] [2022-04-18 15:51:24,271 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:51:24,271 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:24,271 INFO L85 PathProgramCache]: Analyzing trace with hash 113375373, now seen corresponding path program 1 times [2022-04-18 15:51:24,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:24,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422232929] [2022-04-18 15:51:24,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:24,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:24,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:24,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681907702] [2022-04-18 15:51:24,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:24,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:24,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:24,335 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:24,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-18 15:51:24,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:24,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 21 conjunts are in the unsatisfiable core [2022-04-18 15:51:24,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:24,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 15:51:24,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,554 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 15:51:24,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,577 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 15:51:24,577 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 15:51:24,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-04-18 15:51:24,606 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-04-18 15:51:24,606 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 15:51:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:24,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:24,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422232929] [2022-04-18 15:51:24,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:24,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681907702] [2022-04-18 15:51:24,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681907702] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:24,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:24,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-18 15:51:24,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018534223] [2022-04-18 15:51:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:24,625 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-18 15:51:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-18 15:51:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-04-18 15:51:24,628 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 408 [2022-04-18 15:51:24,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 382 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 246.625) internal successors, (1973), 8 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:24,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:24,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 408 [2022-04-18 15:51:24,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:25,256 INFO L129 PetriNetUnfolder]: 555/2594 cut-off events. [2022-04-18 15:51:25,257 INFO L130 PetriNetUnfolder]: For 15/29 co-relation queries the response was YES. [2022-04-18 15:51:25,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 2594 events. 555/2594 cut-off events. For 15/29 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 14076 event pairs, 504 based on Foata normal form. 0/2308 useless extension candidates. Maximal degree in co-relation 1936. Up to 693 conditions per place. [2022-04-18 15:51:25,266 INFO L132 encePairwiseOnDemand]: 398/408 looper letters, 214 selfloop transitions, 9 changer transitions 0/466 dead transitions. [2022-04-18 15:51:25,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 466 transitions, 1402 flow [2022-04-18 15:51:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:51:25,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:51:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2420 transitions. [2022-04-18 15:51:25,271 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.659041394335512 [2022-04-18 15:51:25,271 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2420 transitions. [2022-04-18 15:51:25,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2420 transitions. [2022-04-18 15:51:25,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:25,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2420 transitions. [2022-04-18 15:51:25,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 268.8888888888889) internal successors, (2420), 9 states have internal predecessors, (2420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,281 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,281 INFO L186 Difference]: Start difference. First operand has 381 places, 382 transitions, 782 flow. Second operand 9 states and 2420 transitions. [2022-04-18 15:51:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 466 transitions, 1402 flow [2022-04-18 15:51:25,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 466 transitions, 1400 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:51:25,287 INFO L242 Difference]: Finished difference. Result has 388 places, 382 transitions, 804 flow [2022-04-18 15:51:25,288 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=804, PETRI_PLACES=388, PETRI_TRANSITIONS=382} [2022-04-18 15:51:25,288 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 3 predicate places. [2022-04-18 15:51:25,288 INFO L478 AbstractCegarLoop]: Abstraction has has 388 places, 382 transitions, 804 flow [2022-04-18 15:51:25,289 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 246.625) internal successors, (1973), 8 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,289 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:25,290 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] [2022-04-18 15:51:25,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-18 15:51:25,506 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:25,507 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:25,507 INFO L85 PathProgramCache]: Analyzing trace with hash 219340709, now seen corresponding path program 1 times [2022-04-18 15:51:25,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:25,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569058993] [2022-04-18 15:51:25,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:25,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:25,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:25,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:25,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569058993] [2022-04-18 15:51:25,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569058993] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:25,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:25,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:51:25,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279166327] [2022-04-18 15:51:25,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:25,593 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:25,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:25,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:25,595 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 408 [2022-04-18 15:51:25,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 382 transitions, 804 flow. Second operand has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:25,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 408 [2022-04-18 15:51:25,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:25,663 INFO L129 PetriNetUnfolder]: 7/714 cut-off events. [2022-04-18 15:51:25,664 INFO L130 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-04-18 15:51:25,664 INFO L84 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 714 events. 7/714 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 1267 event pairs, 0 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 630. Up to 16 conditions per place. [2022-04-18 15:51:25,665 INFO L132 encePairwiseOnDemand]: 405/408 looper letters, 11 selfloop transitions, 2 changer transitions 0/386 dead transitions. [2022-04-18 15:51:25,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 386 transitions, 838 flow [2022-04-18 15:51:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:25,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2022-04-18 15:51:25,668 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9379084967320261 [2022-04-18 15:51:25,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2022-04-18 15:51:25,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2022-04-18 15:51:25,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:25,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2022-04-18 15:51:25,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,672 INFO L186 Difference]: Start difference. First operand has 388 places, 382 transitions, 804 flow. Second operand 3 states and 1148 transitions. [2022-04-18 15:51:25,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 386 transitions, 838 flow [2022-04-18 15:51:25,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 386 transitions, 824 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-04-18 15:51:25,678 INFO L242 Difference]: Finished difference. Result has 384 places, 383 transitions, 802 flow [2022-04-18 15:51:25,678 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=802, PETRI_PLACES=384, PETRI_TRANSITIONS=383} [2022-04-18 15:51:25,679 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, -1 predicate places. [2022-04-18 15:51:25,679 INFO L478 AbstractCegarLoop]: Abstraction has has 384 places, 383 transitions, 802 flow [2022-04-18 15:51:25,679 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:25,679 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:25,680 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] [2022-04-18 15:51:25,680 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:51:25,680 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:25,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1314887178, now seen corresponding path program 1 times [2022-04-18 15:51:25,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:25,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087667626] [2022-04-18 15:51:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:25,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:25,697 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:25,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [986157319] [2022-04-18 15:51:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:25,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:25,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:25,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:25,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-18 15:51:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:25,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:25,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:25,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 15:51:25,949 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 15:51:25,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:51:25,971 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 15:51:25,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:51:26,005 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 15:51:26,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:51:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:26,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:26,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:26,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087667626] [2022-04-18 15:51:26,021 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:26,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986157319] [2022-04-18 15:51:26,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986157319] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:26,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:26,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839887672] [2022-04-18 15:51:26,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:26,023 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:26,025 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 408 [2022-04-18 15:51:26,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 383 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:26,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:26,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 408 [2022-04-18 15:51:26,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:26,425 INFO L129 PetriNetUnfolder]: 278/1599 cut-off events. [2022-04-18 15:51:26,426 INFO L130 PetriNetUnfolder]: For 13/20 co-relation queries the response was YES. [2022-04-18 15:51:26,428 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2448 conditions, 1599 events. 278/1599 cut-off events. For 13/20 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7461 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 1925. Up to 788 conditions per place. [2022-04-18 15:51:26,432 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 128 selfloop transitions, 5 changer transitions 0/382 dead transitions. [2022-04-18 15:51:26,433 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 382 transitions, 1066 flow [2022-04-18 15:51:26,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:26,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1622 transitions. [2022-04-18 15:51:26,436 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6625816993464052 [2022-04-18 15:51:26,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1622 transitions. [2022-04-18 15:51:26,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1622 transitions. [2022-04-18 15:51:26,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:26,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1622 transitions. [2022-04-18 15:51:26,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.3333333333333) internal successors, (1622), 6 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:26,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:26,443 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:26,443 INFO L186 Difference]: Start difference. First operand has 384 places, 383 transitions, 802 flow. Second operand 6 states and 1622 transitions. [2022-04-18 15:51:26,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 382 transitions, 1066 flow [2022-04-18 15:51:26,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 382 transitions, 1064 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:51:26,449 INFO L242 Difference]: Finished difference. Result has 387 places, 382 transitions, 808 flow [2022-04-18 15:51:26,450 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=798, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=808, PETRI_PLACES=387, PETRI_TRANSITIONS=382} [2022-04-18 15:51:26,450 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 2 predicate places. [2022-04-18 15:51:26,451 INFO L478 AbstractCegarLoop]: Abstraction has has 387 places, 382 transitions, 808 flow [2022-04-18 15:51:26,451 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:26,451 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:26,452 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:26,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-18 15:51:26,669 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 15:51:26,669 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1083173923, now seen corresponding path program 1 times [2022-04-18 15:51:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:26,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969337602] [2022-04-18 15:51:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:26,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:26,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:26,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160550192] [2022-04-18 15:51:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:26,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:26,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:26,711 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:26,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-18 15:51:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:26,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:26,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:26,984 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 13 treesize of output 9 [2022-04-18 15:51:27,000 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-04-18 15:51:27,001 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 23 treesize of output 22 [2022-04-18 15:51:27,024 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-04-18 15:51:27,024 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 32 treesize of output 34 [2022-04-18 15:51:27,057 INFO L356 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2022-04-18 15:51:27,058 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 41 treesize of output 46 [2022-04-18 15:51:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:27,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:27,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:27,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969337602] [2022-04-18 15:51:27,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160550192] [2022-04-18 15:51:27,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160550192] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:27,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:27,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:27,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826764728] [2022-04-18 15:51:27,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:27,073 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:27,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:27,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:27,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:27,085 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 408 [2022-04-18 15:51:27,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 382 transitions, 808 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:27,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:27,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 408 [2022-04-18 15:51:27,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:27,511 INFO L129 PetriNetUnfolder]: 278/1595 cut-off events. [2022-04-18 15:51:27,511 INFO L130 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-04-18 15:51:27,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 1595 events. 278/1595 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7454 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 1974. Up to 788 conditions per place. [2022-04-18 15:51:27,519 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 128 selfloop transitions, 5 changer transitions 0/381 dead transitions. [2022-04-18 15:51:27,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 381 transitions, 1072 flow [2022-04-18 15:51:27,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1616 transitions. [2022-04-18 15:51:27,522 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2022-04-18 15:51:27,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1616 transitions. [2022-04-18 15:51:27,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1616 transitions. [2022-04-18 15:51:27,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:27,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1616 transitions. [2022-04-18 15:51:27,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:27,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:27,529 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:27,529 INFO L186 Difference]: Start difference. First operand has 387 places, 382 transitions, 808 flow. Second operand 6 states and 1616 transitions. [2022-04-18 15:51:27,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 381 transitions, 1072 flow [2022-04-18 15:51:27,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 381 transitions, 1062 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:27,536 INFO L242 Difference]: Finished difference. Result has 386 places, 381 transitions, 806 flow [2022-04-18 15:51:27,536 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=806, PETRI_PLACES=386, PETRI_TRANSITIONS=381} [2022-04-18 15:51:27,537 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 1 predicate places. [2022-04-18 15:51:27,537 INFO L478 AbstractCegarLoop]: Abstraction has has 386 places, 381 transitions, 806 flow [2022-04-18 15:51:27,538 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:27,538 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:27,538 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] [2022-04-18 15:51:27,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-18 15:51:27,752 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 15:51:27,753 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:27,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 74375907, now seen corresponding path program 1 times [2022-04-18 15:51:27,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:27,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317498000] [2022-04-18 15:51:27,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:27,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:27,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:27,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964647914] [2022-04-18 15:51:27,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:27,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:27,797 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:27,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-18 15:51:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:27,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:27,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:28,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 15:51:28,071 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 15:51:28,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:51:28,093 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 15:51:28,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:51:28,126 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 15:51:28,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:51:28,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:28,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:28,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:28,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317498000] [2022-04-18 15:51:28,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:28,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964647914] [2022-04-18 15:51:28,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964647914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:28,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:28,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:28,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103878629] [2022-04-18 15:51:28,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:28,142 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:28,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:28,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:28,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:28,144 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 408 [2022-04-18 15:51:28,147 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 381 transitions, 806 flow. Second operand has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:28,147 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:28,147 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 408 [2022-04-18 15:51:28,147 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:28,467 INFO L129 PetriNetUnfolder]: 278/1591 cut-off events. [2022-04-18 15:51:28,468 INFO L130 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-04-18 15:51:28,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 1591 events. 278/1591 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7435 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 1998. Up to 792 conditions per place. [2022-04-18 15:51:28,476 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 129 selfloop transitions, 5 changer transitions 0/380 dead transitions. [2022-04-18 15:51:28,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 380 transitions, 1072 flow [2022-04-18 15:51:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1605 transitions. [2022-04-18 15:51:28,480 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6556372549019608 [2022-04-18 15:51:28,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1605 transitions. [2022-04-18 15:51:28,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1605 transitions. [2022-04-18 15:51:28,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:28,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1605 transitions. [2022-04-18 15:51:28,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.5) internal successors, (1605), 6 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:28,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:28,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:28,492 INFO L186 Difference]: Start difference. First operand has 386 places, 381 transitions, 806 flow. Second operand 6 states and 1605 transitions. [2022-04-18 15:51:28,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 380 transitions, 1072 flow [2022-04-18 15:51:28,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 380 transitions, 1062 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:28,498 INFO L242 Difference]: Finished difference. Result has 385 places, 380 transitions, 804 flow [2022-04-18 15:51:28,498 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=794, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=804, PETRI_PLACES=385, PETRI_TRANSITIONS=380} [2022-04-18 15:51:28,501 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 0 predicate places. [2022-04-18 15:51:28,501 INFO L478 AbstractCegarLoop]: Abstraction has has 385 places, 380 transitions, 804 flow [2022-04-18 15:51:28,502 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.5) internal successors, (1515), 6 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:28,502 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:28,502 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] [2022-04-18 15:51:28,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-18 15:51:28,720 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:28,720 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:28,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1621947603, now seen corresponding path program 1 times [2022-04-18 15:51:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:28,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852027544] [2022-04-18 15:51:28,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:28,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:28,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:28,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78134583] [2022-04-18 15:51:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:28,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:28,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:28,765 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:28,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-18 15:51:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:28,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:28,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:29,098 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 13 treesize of output 9 [2022-04-18 15:51:29,110 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-04-18 15:51:29,110 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 23 treesize of output 22 [2022-04-18 15:51:29,137 INFO L356 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2022-04-18 15:51:29,137 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 32 treesize of output 34 [2022-04-18 15:51:29,173 INFO L356 Elim1Store]: treesize reduction 114, result has 19.7 percent of original size [2022-04-18 15:51:29,173 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 41 treesize of output 46 [2022-04-18 15:51:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:29,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:29,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:29,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852027544] [2022-04-18 15:51:29,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:29,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78134583] [2022-04-18 15:51:29,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78134583] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:29,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:29,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698646060] [2022-04-18 15:51:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:29,189 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:29,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:29,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:29,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:29,191 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 408 [2022-04-18 15:51:29,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 380 transitions, 804 flow. Second operand has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:29,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:29,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 408 [2022-04-18 15:51:29,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:29,511 INFO L129 PetriNetUnfolder]: 278/1587 cut-off events. [2022-04-18 15:51:29,512 INFO L130 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-04-18 15:51:29,514 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 1587 events. 278/1587 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7415 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 2010. Up to 788 conditions per place. [2022-04-18 15:51:29,518 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 128 selfloop transitions, 5 changer transitions 0/379 dead transitions. [2022-04-18 15:51:29,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 379 transitions, 1068 flow [2022-04-18 15:51:29,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:29,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1604 transitions. [2022-04-18 15:51:29,522 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6552287581699346 [2022-04-18 15:51:29,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1604 transitions. [2022-04-18 15:51:29,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1604 transitions. [2022-04-18 15:51:29,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:29,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1604 transitions. [2022-04-18 15:51:29,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.3333333333333) internal successors, (1604), 6 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:29,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:29,528 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:29,528 INFO L186 Difference]: Start difference. First operand has 385 places, 380 transitions, 804 flow. Second operand 6 states and 1604 transitions. [2022-04-18 15:51:29,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 379 transitions, 1068 flow [2022-04-18 15:51:29,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 379 transitions, 1058 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:29,534 INFO L242 Difference]: Finished difference. Result has 384 places, 379 transitions, 802 flow [2022-04-18 15:51:29,534 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=802, PETRI_PLACES=384, PETRI_TRANSITIONS=379} [2022-04-18 15:51:29,535 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, -1 predicate places. [2022-04-18 15:51:29,535 INFO L478 AbstractCegarLoop]: Abstraction has has 384 places, 379 transitions, 802 flow [2022-04-18 15:51:29,535 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 253.5) internal successors, (1521), 6 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:29,535 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:29,536 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] [2022-04-18 15:51:29,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-18 15:51:29,751 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:29,751 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:29,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:29,752 INFO L85 PathProgramCache]: Analyzing trace with hash -375170282, now seen corresponding path program 1 times [2022-04-18 15:51:29,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:29,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493550174] [2022-04-18 15:51:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:29,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:29,777 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:29,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032357443] [2022-04-18 15:51:29,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:29,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:29,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:29,779 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:29,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-18 15:51:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:29,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:29,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:30,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 15:51:30,113 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 15:51:30,113 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:51:30,141 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 15:51:30,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:51:30,173 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 15:51:30,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:51:30,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:30,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:30,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:30,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493550174] [2022-04-18 15:51:30,186 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:30,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032357443] [2022-04-18 15:51:30,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032357443] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:30,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:30,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:30,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318251814] [2022-04-18 15:51:30,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:30,187 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:30,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:30,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:30,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:30,189 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 408 [2022-04-18 15:51:30,189 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 379 transitions, 802 flow. Second operand has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,189 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:30,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 408 [2022-04-18 15:51:30,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:30,464 INFO L129 PetriNetUnfolder]: 278/1583 cut-off events. [2022-04-18 15:51:30,464 INFO L130 PetriNetUnfolder]: For 15/22 co-relation queries the response was YES. [2022-04-18 15:51:30,467 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2442 conditions, 1583 events. 278/1583 cut-off events. For 15/22 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7382 event pairs, 252 based on Foata normal form. 0/1447 useless extension candidates. Maximal degree in co-relation 2020. Up to 780 conditions per place. [2022-04-18 15:51:30,471 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 126 selfloop transitions, 5 changer transitions 0/378 dead transitions. [2022-04-18 15:51:30,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 378 transitions, 1062 flow [2022-04-18 15:51:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:30,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:30,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1608 transitions. [2022-04-18 15:51:30,474 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6568627450980392 [2022-04-18 15:51:30,474 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1608 transitions. [2022-04-18 15:51:30,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1608 transitions. [2022-04-18 15:51:30,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:30,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1608 transitions. [2022-04-18 15:51:30,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.0) internal successors, (1608), 6 states have internal predecessors, (1608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,480 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,480 INFO L186 Difference]: Start difference. First operand has 384 places, 379 transitions, 802 flow. Second operand 6 states and 1608 transitions. [2022-04-18 15:51:30,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 378 transitions, 1062 flow [2022-04-18 15:51:30,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 378 transitions, 1052 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:30,486 INFO L242 Difference]: Finished difference. Result has 383 places, 378 transitions, 800 flow [2022-04-18 15:51:30,486 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=800, PETRI_PLACES=383, PETRI_TRANSITIONS=378} [2022-04-18 15:51:30,487 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, -2 predicate places. [2022-04-18 15:51:30,487 INFO L478 AbstractCegarLoop]: Abstraction has has 383 places, 378 transitions, 800 flow [2022-04-18 15:51:30,487 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 255.33333333333334) internal successors, (1532), 6 states have internal predecessors, (1532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:30,488 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:30,488 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] [2022-04-18 15:51:30,506 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 15:51:30,706 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:30,706 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1003768281, now seen corresponding path program 1 times [2022-04-18 15:51:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:30,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174782885] [2022-04-18 15:51:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:30,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:30,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688387045] [2022-04-18 15:51:30,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:30,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:30,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:30,731 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:30,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-18 15:51:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:30,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:51:30,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:31,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:51:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:31,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174782885] [2022-04-18 15:51:31,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:31,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688387045] [2022-04-18 15:51:31,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688387045] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:51:31,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 15:51:31,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-18 15:51:31,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506090014] [2022-04-18 15:51:31,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 15:51:31,395 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-18 15:51:31,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:31,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-18 15:51:31,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-18 15:51:31,399 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-04-18 15:51:31,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 378 transitions, 800 flow. Second operand has 8 states, 8 states have (on average 378.875) internal successors, (3031), 8 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:31,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:31,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-04-18 15:51:31,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:31,530 INFO L129 PetriNetUnfolder]: 7/880 cut-off events. [2022-04-18 15:51:31,531 INFO L130 PetriNetUnfolder]: For 7/8 co-relation queries the response was YES. [2022-04-18 15:51:31,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 880 events. 7/880 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 796 event pairs, 0 based on Foata normal form. 4/862 useless extension candidates. Maximal degree in co-relation 833. Up to 13 conditions per place. [2022-04-18 15:51:31,533 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 12 selfloop transitions, 9 changer transitions 0/388 dead transitions. [2022-04-18 15:51:31,533 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 388 transitions, 864 flow [2022-04-18 15:51:31,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:51:31,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:51:31,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3416 transitions. [2022-04-18 15:51:31,538 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9302832244008714 [2022-04-18 15:51:31,538 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3416 transitions. [2022-04-18 15:51:31,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3416 transitions. [2022-04-18 15:51:31,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:31,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3416 transitions. [2022-04-18 15:51:31,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 379.55555555555554) internal successors, (3416), 9 states have internal predecessors, (3416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:31,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:31,548 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:31,548 INFO L186 Difference]: Start difference. First operand has 383 places, 378 transitions, 800 flow. Second operand 9 states and 3416 transitions. [2022-04-18 15:51:31,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 388 transitions, 864 flow [2022-04-18 15:51:31,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 388 transitions, 854 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:31,554 INFO L242 Difference]: Finished difference. Result has 389 places, 384 transitions, 840 flow [2022-04-18 15:51:31,554 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=840, PETRI_PLACES=389, PETRI_TRANSITIONS=384} [2022-04-18 15:51:31,555 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 4 predicate places. [2022-04-18 15:51:31,555 INFO L478 AbstractCegarLoop]: Abstraction has has 389 places, 384 transitions, 840 flow [2022-04-18 15:51:31,555 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 378.875) internal successors, (3031), 8 states have internal predecessors, (3031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:31,556 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:31,556 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:31,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-18 15:51:31,774 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:31,774 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:31,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash -936527271, now seen corresponding path program 2 times [2022-04-18 15:51:31,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:31,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083272876] [2022-04-18 15:51:31,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:31,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:31,814 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:31,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368057219] [2022-04-18 15:51:31,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:51:31,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:31,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:31,816 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:31,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-18 15:51:32,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 15:51:32,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:51:32,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:32,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:32,419 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 15:51:32,433 INFO L356 Elim1Store]: treesize reduction 39, result has 22.0 percent of original size [2022-04-18 15:51:32,434 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 15:51:32,460 INFO L356 Elim1Store]: treesize reduction 96, result has 20.0 percent of original size [2022-04-18 15:51:32,460 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 15:51:32,501 INFO L356 Elim1Store]: treesize reduction 172, result has 17.3 percent of original size [2022-04-18 15:51:32,501 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 15:51:32,517 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2022-04-18 15:51:32,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:32,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:32,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083272876] [2022-04-18 15:51:32,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:32,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368057219] [2022-04-18 15:51:32,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368057219] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:32,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:32,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:32,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396540256] [2022-04-18 15:51:32,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:32,519 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:32,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:32,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:32,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:32,521 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 408 [2022-04-18 15:51:32,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 384 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:32,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:32,522 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 408 [2022-04-18 15:51:32,522 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:33,029 INFO L129 PetriNetUnfolder]: 308/1791 cut-off events. [2022-04-18 15:51:33,029 INFO L130 PetriNetUnfolder]: For 23/30 co-relation queries the response was YES. [2022-04-18 15:51:33,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 1791 events. 308/1791 cut-off events. For 23/30 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7058 event pairs, 282 based on Foata normal form. 0/1652 useless extension candidates. Maximal degree in co-relation 2154. Up to 920 conditions per place. [2022-04-18 15:51:33,034 INFO L132 encePairwiseOnDemand]: 396/408 looper letters, 131 selfloop transitions, 10 changer transitions 0/382 dead transitions. [2022-04-18 15:51:33,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 382 transitions, 1118 flow [2022-04-18 15:51:33,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:33,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1547 transitions. [2022-04-18 15:51:33,037 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2022-04-18 15:51:33,037 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1547 transitions. [2022-04-18 15:51:33,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1547 transitions. [2022-04-18 15:51:33,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:33,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1547 transitions. [2022-04-18 15:51:33,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 257.8333333333333) internal successors, (1547), 6 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,043 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,043 INFO L186 Difference]: Start difference. First operand has 389 places, 384 transitions, 840 flow. Second operand 6 states and 1547 transitions. [2022-04-18 15:51:33,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 382 transitions, 1118 flow [2022-04-18 15:51:33,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 382 transitions, 1112 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-04-18 15:51:33,049 INFO L242 Difference]: Finished difference. Result has 391 places, 382 transitions, 850 flow [2022-04-18 15:51:33,049 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=391, PETRI_TRANSITIONS=382} [2022-04-18 15:51:33,050 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 6 predicate places. [2022-04-18 15:51:33,050 INFO L478 AbstractCegarLoop]: Abstraction has has 391 places, 382 transitions, 850 flow [2022-04-18 15:51:33,050 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.83333333333334) internal successors, (1469), 6 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:33,050 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:33,051 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:33,068 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 15:51:33,267 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 15:51:33,268 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:33,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:33,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1769411408, now seen corresponding path program 1 times [2022-04-18 15:51:33,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:33,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547636955] [2022-04-18 15:51:33,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:33,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:33,359 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:33,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718888140] [2022-04-18 15:51:33,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:33,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:33,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:33,360 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:33,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-18 15:51:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:33,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 15:51:33,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:34,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:51:34,927 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 1 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:34,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:34,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547636955] [2022-04-18 15:51:34,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:34,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718888140] [2022-04-18 15:51:34,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718888140] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:51:34,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 15:51:34,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-04-18 15:51:34,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632033266] [2022-04-18 15:51:34,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 15:51:34,929 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-18 15:51:34,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:34,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-18 15:51:34,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-04-18 15:51:34,932 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-04-18 15:51:34,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 382 transitions, 850 flow. Second operand has 16 states, 16 states have (on average 379.1875) internal successors, (6067), 16 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:34,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:34,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-04-18 15:51:34,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:35,357 INFO L129 PetriNetUnfolder]: 7/1606 cut-off events. [2022-04-18 15:51:35,358 INFO L130 PetriNetUnfolder]: For 55/56 co-relation queries the response was YES. [2022-04-18 15:51:35,359 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1861 conditions, 1606 events. 7/1606 cut-off events. For 55/56 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 789 event pairs, 0 based on Foata normal form. 8/1594 useless extension candidates. Maximal degree in co-relation 1693. Up to 29 conditions per place. [2022-04-18 15:51:35,361 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 20 selfloop transitions, 21 changer transitions 0/406 dead transitions. [2022-04-18 15:51:35,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 406 transitions, 1032 flow [2022-04-18 15:51:35,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-18 15:51:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-04-18 15:51:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7962 transitions. [2022-04-18 15:51:35,370 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9292717086834734 [2022-04-18 15:51:35,370 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7962 transitions. [2022-04-18 15:51:35,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7962 transitions. [2022-04-18 15:51:35,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:35,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7962 transitions. [2022-04-18 15:51:35,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 379.14285714285717) internal successors, (7962), 21 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:35,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:35,393 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:35,393 INFO L186 Difference]: Start difference. First operand has 391 places, 382 transitions, 850 flow. Second operand 21 states and 7962 transitions. [2022-04-18 15:51:35,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 406 transitions, 1032 flow [2022-04-18 15:51:35,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 406 transitions, 1012 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:35,399 INFO L242 Difference]: Finished difference. Result has 411 places, 395 transitions, 960 flow [2022-04-18 15:51:35,399 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=960, PETRI_PLACES=411, PETRI_TRANSITIONS=395} [2022-04-18 15:51:35,400 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 26 predicate places. [2022-04-18 15:51:35,400 INFO L478 AbstractCegarLoop]: Abstraction has has 411 places, 395 transitions, 960 flow [2022-04-18 15:51:35,401 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 379.1875) internal successors, (6067), 16 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:35,401 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:35,402 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:35,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-04-18 15:51:35,615 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 15:51:35,616 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:35,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:35,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1136823728, now seen corresponding path program 2 times [2022-04-18 15:51:35,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:35,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019678604] [2022-04-18 15:51:35,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:35,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:35,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:35,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772414135] [2022-04-18 15:51:35,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:51:35,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:35,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:35,723 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-18 15:51:35,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-18 15:51:36,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 15:51:36,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:51:36,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:36,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:36,785 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 15:51:36,796 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 15:51:36,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:51:36,819 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 15:51:36,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:51:36,856 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 15:51:36,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:51:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1919 trivial. 0 not checked. [2022-04-18 15:51:36,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:36,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:36,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019678604] [2022-04-18 15:51:36,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:36,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772414135] [2022-04-18 15:51:36,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772414135] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:36,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:36,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:36,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445967299] [2022-04-18 15:51:36,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:36,874 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:36,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:36,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:36,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:36,876 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 408 [2022-04-18 15:51:36,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 395 transitions, 960 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:36,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:36,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 408 [2022-04-18 15:51:36,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:37,589 INFO L129 PetriNetUnfolder]: 278/2494 cut-off events. [2022-04-18 15:51:37,590 INFO L130 PetriNetUnfolder]: For 95/102 co-relation queries the response was YES. [2022-04-18 15:51:37,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3911 conditions, 2494 events. 278/2494 cut-off events. For 95/102 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 7013 event pairs, 252 based on Foata normal form. 0/2361 useless extension candidates. Maximal degree in co-relation 2639. Up to 1168 conditions per place. [2022-04-18 15:51:37,602 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 120 selfloop transitions, 5 changer transitions 0/394 dead transitions. [2022-04-18 15:51:37,602 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 394 transitions, 1208 flow [2022-04-18 15:51:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1620 transitions. [2022-04-18 15:51:37,605 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2022-04-18 15:51:37,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1620 transitions. [2022-04-18 15:51:37,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1620 transitions. [2022-04-18 15:51:37,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:37,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1620 transitions. [2022-04-18 15:51:37,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 270.0) internal successors, (1620), 6 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:37,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:37,615 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:37,616 INFO L186 Difference]: Start difference. First operand has 411 places, 395 transitions, 960 flow. Second operand 6 states and 1620 transitions. [2022-04-18 15:51:37,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 394 transitions, 1208 flow [2022-04-18 15:51:37,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 394 transitions, 1184 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-04-18 15:51:37,623 INFO L242 Difference]: Finished difference. Result has 409 places, 394 transitions, 944 flow [2022-04-18 15:51:37,623 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=944, PETRI_PLACES=409, PETRI_TRANSITIONS=394} [2022-04-18 15:51:37,624 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 24 predicate places. [2022-04-18 15:51:37,624 INFO L478 AbstractCegarLoop]: Abstraction has has 409 places, 394 transitions, 944 flow [2022-04-18 15:51:37,624 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:37,624 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:37,625 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:37,649 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 15:51:37,842 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 15:51:37,843 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash -152451107, now seen corresponding path program 1 times [2022-04-18 15:51:37,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:37,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603653182] [2022-04-18 15:51:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:37,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:37,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:37,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210803127] [2022-04-18 15:51:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:37,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:37,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:37,936 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 15:51:37,937 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 15:51:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:38,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2940 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-18 15:51:38,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:39,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:51:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1919 backedges. 1 proven. 1918 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:51:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603653182] [2022-04-18 15:51:41,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210803127] [2022-04-18 15:51:41,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210803127] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:51:41,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 15:51:41,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2022-04-18 15:51:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325500714] [2022-04-18 15:51:41,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 15:51:41,150 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-04-18 15:51:41,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-04-18 15:51:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=720, Unknown=0, NotChecked=0, Total=992 [2022-04-18 15:51:41,155 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-04-18 15:51:41,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 394 transitions, 944 flow. Second operand has 32 states, 32 states have (on average 379.34375) internal successors, (12139), 32 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:41,161 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:41,161 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-04-18 15:51:41,161 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:42,479 INFO L129 PetriNetUnfolder]: 7/3061 cut-off events. [2022-04-18 15:51:42,479 INFO L130 PetriNetUnfolder]: For 571/572 co-relation queries the response was YES. [2022-04-18 15:51:42,481 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 3061 events. 7/3061 cut-off events. For 571/572 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 785 event pairs, 0 based on Foata normal form. 16/3058 useless extension candidates. Maximal degree in co-relation 3513. Up to 61 conditions per place. [2022-04-18 15:51:42,484 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 36 selfloop transitions, 45 changer transitions 0/445 dead transitions. [2022-04-18 15:51:42,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 445 transitions, 1406 flow [2022-04-18 15:51:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-04-18 15:51:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-04-18 15:51:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 17054 transitions. [2022-04-18 15:51:42,523 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9288671023965142 [2022-04-18 15:51:42,523 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 17054 transitions. [2022-04-18 15:51:42,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 17054 transitions. [2022-04-18 15:51:42,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:42,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 17054 transitions. [2022-04-18 15:51:42,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 378.97777777777776) internal successors, (17054), 45 states have internal predecessors, (17054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 408.0) internal successors, (18768), 46 states have internal predecessors, (18768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,562 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 408.0) internal successors, (18768), 46 states have internal predecessors, (18768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,562 INFO L186 Difference]: Start difference. First operand has 409 places, 394 transitions, 944 flow. Second operand 45 states and 17054 transitions. [2022-04-18 15:51:42,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 445 transitions, 1406 flow [2022-04-18 15:51:42,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 445 transitions, 1396 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:42,569 INFO L242 Difference]: Finished difference. Result has 457 places, 419 transitions, 1236 flow [2022-04-18 15:51:42,569 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1236, PETRI_PLACES=457, PETRI_TRANSITIONS=419} [2022-04-18 15:51:42,570 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 72 predicate places. [2022-04-18 15:51:42,570 INFO L478 AbstractCegarLoop]: Abstraction has has 457 places, 419 transitions, 1236 flow [2022-04-18 15:51:42,571 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 379.34375) internal successors, (12139), 32 states have internal predecessors, (12139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:42,571 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:42,572 INFO L255 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:42,595 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 15:51:42,793 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 15:51:42,793 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:42,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:42,794 INFO L85 PathProgramCache]: Analyzing trace with hash 593152477, now seen corresponding path program 2 times [2022-04-18 15:51:42,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:42,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763029566] [2022-04-18 15:51:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:42,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:42,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:42,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [572470284] [2022-04-18 15:51:42,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:51:42,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:42,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:42,932 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 15:51:42,933 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 15:51:43,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-18 15:51:43,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:51:43,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 17 conjunts are in the unsatisfiable core [2022-04-18 15:51:43,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:45,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-04-18 15:51:45,411 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-04-18 15:51:45,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-04-18 15:51:45,438 INFO L356 Elim1Store]: treesize reduction 56, result has 23.3 percent of original size [2022-04-18 15:51:45,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-04-18 15:51:45,477 INFO L356 Elim1Store]: treesize reduction 104, result has 20.0 percent of original size [2022-04-18 15:51:45,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 44 [2022-04-18 15:51:45,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-04-18 15:51:45,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:45,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:45,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763029566] [2022-04-18 15:51:45,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:45,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572470284] [2022-04-18 15:51:45,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572470284] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:45,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:45,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:51:45,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685226937] [2022-04-18 15:51:45,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:45,497 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:51:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:51:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:51:45,499 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 408 [2022-04-18 15:51:45,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 419 transitions, 1236 flow. Second operand has 6 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:45,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:45,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 408 [2022-04-18 15:51:45,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:47,273 INFO L129 PetriNetUnfolder]: 278/3949 cut-off events. [2022-04-18 15:51:47,274 INFO L130 PetriNetUnfolder]: For 493/500 co-relation queries the response was YES. [2022-04-18 15:51:47,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 3949 events. 278/3949 cut-off events. For 493/500 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6966 event pairs, 252 based on Foata normal form. 0/3817 useless extension candidates. Maximal degree in co-relation 4748. Up to 1809 conditions per place. [2022-04-18 15:51:47,281 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 121 selfloop transitions, 5 changer transitions 0/418 dead transitions. [2022-04-18 15:51:47,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 418 transitions, 1486 flow [2022-04-18 15:51:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:51:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:51:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1609 transitions. [2022-04-18 15:51:47,284 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6572712418300654 [2022-04-18 15:51:47,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1609 transitions. [2022-04-18 15:51:47,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1609 transitions. [2022-04-18 15:51:47,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:47,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1609 transitions. [2022-04-18 15:51:47,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 268.1666666666667) internal successors, (1609), 6 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:47,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:47,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 408.0) internal successors, (2856), 7 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:47,288 INFO L186 Difference]: Start difference. First operand has 457 places, 419 transitions, 1236 flow. Second operand 6 states and 1609 transitions. [2022-04-18 15:51:47,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 418 transitions, 1486 flow [2022-04-18 15:51:47,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 418 transitions, 1430 flow, removed 10 selfloop flow, removed 18 redundant places. [2022-04-18 15:51:47,297 INFO L242 Difference]: Finished difference. Result has 443 places, 418 transitions, 1188 flow [2022-04-18 15:51:47,297 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1188, PETRI_PLACES=443, PETRI_TRANSITIONS=418} [2022-04-18 15:51:47,298 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 58 predicate places. [2022-04-18 15:51:47,298 INFO L478 AbstractCegarLoop]: Abstraction has has 443 places, 418 transitions, 1188 flow [2022-04-18 15:51:47,298 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.5) internal successors, (1557), 6 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:47,298 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:47,299 INFO L255 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:47,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-04-18 15:51:47,517 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 15:51:47,517 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:47,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1705975658, now seen corresponding path program 1 times [2022-04-18 15:51:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:47,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75471666] [2022-04-18 15:51:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:47,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:47,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:47,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885196362] [2022-04-18 15:51:47,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:47,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:47,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:47,698 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 15:51:47,699 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 15:51:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:49,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 5938 conjuncts, 2 conjunts are in the unsatisfiable core [2022-04-18 15:51:49,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 9571 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9571 trivial. 0 not checked. [2022-04-18 15:51:50,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-18 15:51:50,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:50,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75471666] [2022-04-18 15:51:51,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:51,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885196362] [2022-04-18 15:51:51,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885196362] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:51:51,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:51:51,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:51:51,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803619722] [2022-04-18 15:51:51,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:51:51,001 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:51:51,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:51,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:51:51,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:51:51,002 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 408 [2022-04-18 15:51:51,003 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 418 transitions, 1188 flow. Second operand has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:51,003 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:51,003 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 408 [2022-04-18 15:51:51,003 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:51:51,985 INFO L129 PetriNetUnfolder]: 6/3058 cut-off events. [2022-04-18 15:51:51,985 INFO L130 PetriNetUnfolder]: For 513/519 co-relation queries the response was YES. [2022-04-18 15:51:51,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 3058 events. 6/3058 cut-off events. For 513/519 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 793 event pairs, 0 based on Foata normal form. 1/3042 useless extension candidates. Maximal degree in co-relation 3432. Up to 61 conditions per place. [2022-04-18 15:51:51,989 INFO L132 encePairwiseOnDemand]: 405/408 looper letters, 9 selfloop transitions, 2 changer transitions 0/420 dead transitions. [2022-04-18 15:51:51,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 420 transitions, 1214 flow [2022-04-18 15:51:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:51:51,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:51:51,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1146 transitions. [2022-04-18 15:51:51,991 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9362745098039216 [2022-04-18 15:51:51,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1146 transitions. [2022-04-18 15:51:51,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1146 transitions. [2022-04-18 15:51:51,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:51:51,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1146 transitions. [2022-04-18 15:51:51,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.0) internal successors, (1146), 3 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:51,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:51,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 408.0) internal successors, (1632), 4 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:51,994 INFO L186 Difference]: Start difference. First operand has 443 places, 418 transitions, 1188 flow. Second operand 3 states and 1146 transitions. [2022-04-18 15:51:51,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 420 transitions, 1214 flow [2022-04-18 15:51:51,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 420 transitions, 1204 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:51:52,002 INFO L242 Difference]: Finished difference. Result has 441 places, 418 transitions, 1186 flow [2022-04-18 15:51:52,003 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1186, PETRI_PLACES=441, PETRI_TRANSITIONS=418} [2022-04-18 15:51:52,003 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 56 predicate places. [2022-04-18 15:51:52,003 INFO L478 AbstractCegarLoop]: Abstraction has has 441 places, 418 transitions, 1186 flow [2022-04-18 15:51:52,003 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:52,003 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:51:52,004 INFO L255 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:51:52,036 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 15:51:52,223 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 15:51:52,224 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:51:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:51:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1195755065, now seen corresponding path program 1 times [2022-04-18 15:51:52,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:51:52,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365233994] [2022-04-18 15:51:52,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:52,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:51:52,366 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:51:52,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325671228] [2022-04-18 15:51:52,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:51:52,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:51:52,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:51:52,380 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 15:51:52,381 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 15:51:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:51:54,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 5963 conjuncts, 32 conjunts are in the unsatisfiable core [2022-04-18 15:51:54,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:51:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:51:56,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:51:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9576 backedges. 1 proven. 9570 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:51:59,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:51:59,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365233994] [2022-04-18 15:51:59,019 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:51:59,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325671228] [2022-04-18 15:51:59,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325671228] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:51:59,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 15:51:59,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 61 [2022-04-18 15:51:59,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326633802] [2022-04-18 15:51:59,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 15:51:59,022 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-04-18 15:51:59,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:51:59,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-04-18 15:51:59,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=960, Invalid=2700, Unknown=0, NotChecked=0, Total=3660 [2022-04-18 15:51:59,030 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 408 [2022-04-18 15:51:59,040 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 418 transitions, 1186 flow. Second operand has 61 states, 61 states have (on average 379.4754098360656) internal successors, (23148), 61 states have internal predecessors, (23148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:51:59,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:51:59,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 408 [2022-04-18 15:51:59,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:03,353 INFO L129 PetriNetUnfolder]: 6/5788 cut-off events. [2022-04-18 15:52:03,353 INFO L130 PetriNetUnfolder]: For 4314/4315 co-relation queries the response was YES. [2022-04-18 15:52:03,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7262 conditions, 5788 events. 6/5788 cut-off events. For 4314/4315 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 793 event pairs, 0 based on Foata normal form. 30/5802 useless extension candidates. Maximal degree in co-relation 7061. Up to 121 conditions per place. [2022-04-18 15:52:03,360 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 66 selfloop transitions, 90 changer transitions 0/519 dead transitions. [2022-04-18 15:52:03,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 519 transitions, 2272 flow [2022-04-18 15:52:03,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-04-18 15:52:03,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2022-04-18 15:52:03,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 34101 transitions. [2022-04-18 15:52:03,377 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9286764705882353 [2022-04-18 15:52:03,377 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 34101 transitions. [2022-04-18 15:52:03,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 34101 transitions. [2022-04-18 15:52:03,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:03,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 34101 transitions. [2022-04-18 15:52:03,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 378.9) internal successors, (34101), 90 states have internal predecessors, (34101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:03,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 408.0) internal successors, (37128), 91 states have internal predecessors, (37128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:03,442 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 408.0) internal successors, (37128), 91 states have internal predecessors, (37128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:03,442 INFO L186 Difference]: Start difference. First operand has 441 places, 418 transitions, 1186 flow. Second operand 90 states and 34101 transitions. [2022-04-18 15:52:03,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 519 transitions, 2272 flow [2022-04-18 15:52:03,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 519 transitions, 2268 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:52:03,454 INFO L242 Difference]: Finished difference. Result has 544 places, 464 transitions, 1836 flow [2022-04-18 15:52:03,455 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=90, PETRI_FLOW=1836, PETRI_PLACES=544, PETRI_TRANSITIONS=464} [2022-04-18 15:52:03,455 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 159 predicate places. [2022-04-18 15:52:03,455 INFO L478 AbstractCegarLoop]: Abstraction has has 544 places, 464 transitions, 1836 flow [2022-04-18 15:52:03,457 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 379.4754098360656) internal successors, (23148), 61 states have internal predecessors, (23148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:03,458 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:03,458 INFO L255 CegarLoopForPetriNet]: trace histogram [30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:03,499 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 15:52:03,683 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 15:52:03,684 INFO L403 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:52:03,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:03,685 INFO L85 PathProgramCache]: Analyzing trace with hash 811613051, now seen corresponding path program 2 times [2022-04-18 15:52:03,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:03,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350941134] [2022-04-18 15:52:03,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:03,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:03,950 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:52:03,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804575534] [2022-04-18 15:52:03,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-18 15:52:03,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:03,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:03,952 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 15:52:03,953 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 15:52:07,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-18 15:52:07,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 15:52:07,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 11498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-04-18 15:52:07,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 15:52:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-04-18 15:52:12,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 15:52:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 39621 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39620 trivial. 0 not checked. [2022-04-18 15:52:15,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:52:15,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350941134] [2022-04-18 15:52:15,604 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 15:52:15,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804575534] [2022-04-18 15:52:15,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804575534] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 15:52:15,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 15:52:15,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-18 15:52:15,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867647040] [2022-04-18 15:52:15,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 15:52:15,607 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-04-18 15:52:15,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:52:15,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-04-18 15:52:15,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-18 15:52:15,609 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 408 [2022-04-18 15:52:15,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 464 transitions, 1836 flow. Second operand has 8 states, 8 states have (on average 376.75) internal successors, (3014), 8 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:15,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:52:15,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 408 [2022-04-18 15:52:15,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:52:22,822 INFO L129 PetriNetUnfolder]: 7/8549 cut-off events. [2022-04-18 15:52:22,822 INFO L130 PetriNetUnfolder]: For 2982/2983 co-relation queries the response was YES. [2022-04-18 15:52:22,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10913 conditions, 8549 events. 7/8549 cut-off events. For 2982/2983 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 315 event pairs, 0 based on Foata normal form. 2/8535 useless extension candidates. Maximal degree in co-relation 10698. Up to 181 conditions per place. [2022-04-18 15:52:22,836 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 21 selfloop transitions, 9 changer transitions 0/480 dead transitions. [2022-04-18 15:52:22,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 480 transitions, 1930 flow [2022-04-18 15:52:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-18 15:52:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-04-18 15:52:22,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3398 transitions. [2022-04-18 15:52:22,838 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9253812636165577 [2022-04-18 15:52:22,839 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3398 transitions. [2022-04-18 15:52:22,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3398 transitions. [2022-04-18 15:52:22,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:52:22,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3398 transitions. [2022-04-18 15:52:22,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 377.55555555555554) internal successors, (3398), 9 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:22,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:22,844 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 408.0) internal successors, (4080), 10 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:22,844 INFO L186 Difference]: Start difference. First operand has 544 places, 464 transitions, 1836 flow. Second operand 9 states and 3398 transitions. [2022-04-18 15:52:22,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 480 transitions, 1930 flow [2022-04-18 15:52:22,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 480 transitions, 1812 flow, removed 17 selfloop flow, removed 42 redundant places. [2022-04-18 15:52:22,863 INFO L242 Difference]: Finished difference. Result has 513 places, 470 transitions, 1768 flow [2022-04-18 15:52:22,863 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1718, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1768, PETRI_PLACES=513, PETRI_TRANSITIONS=470} [2022-04-18 15:52:22,863 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 128 predicate places. [2022-04-18 15:52:22,863 INFO L478 AbstractCegarLoop]: Abstraction has has 513 places, 470 transitions, 1768 flow [2022-04-18 15:52:22,864 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 376.75) internal successors, (3014), 8 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:52:22,864 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:52:22,866 INFO L255 CegarLoopForPetriNet]: trace histogram [90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:52:22,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-18 15:52:23,091 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 15:52:23,092 INFO L403 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 15:52:23,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:52:23,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2005211415, now seen corresponding path program 3 times [2022-04-18 15:52:23,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:52:23,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618683608] [2022-04-18 15:52:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:52:23,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:52:24,125 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 15:52:24,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570057299] [2022-04-18 15:52:24,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-18 15:52:24,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 15:52:24,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:52:24,148 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 15:52:24,149 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 16:01:15,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-18 16:01:15,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 16:01:16,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 8 conjunts are in the unsatisfiable core [2022-04-18 16:01:16,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:01:28,173 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-04-18 16:01:28,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:01:41,183 INFO L134 CoverageAnalysis]: Checked inductivity of 364817 backedges. 0 proven. 245967 refuted. 0 times theorem prover too weak. 118850 trivial. 0 not checked. [2022-04-18 16:01:41,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:01:41,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618683608] [2022-04-18 16:01:41,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:01:41,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570057299] [2022-04-18 16:01:41,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570057299] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:01:41,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 16:01:41,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-04-18 16:01:41,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593326954] [2022-04-18 16:01:41,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 16:01:41,190 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-18 16:01:41,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:01:41,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-18 16:01:41,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-04-18 16:01:41,193 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 408 [2022-04-18 16:01:41,201 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 470 transitions, 1768 flow. Second operand has 16 states, 16 states have (on average 377.375) internal successors, (6038), 16 states have internal predecessors, (6038), 0 states have call successors, (0), 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 16:01:41,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:01:41,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 408 [2022-04-18 16:01:41,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:02:14,296 INFO L129 PetriNetUnfolder]: 11/19585 cut-off events. [2022-04-18 16:02:14,296 INFO L130 PetriNetUnfolder]: For 7427/7428 co-relation queries the response was YES. [2022-04-18 16:02:14,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24663 conditions, 19585 events. 11/19585 cut-off events. For 7427/7428 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 319 event pairs, 0 based on Foata normal form. 4/19573 useless extension candidates. Maximal degree in co-relation 24445. Up to 421 conditions per place. [2022-04-18 16:02:14,330 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 41 selfloop transitions, 21 changer transitions 0/512 dead transitions. [2022-04-18 16:02:14,331 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 512 transitions, 2036 flow [2022-04-18 16:02:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-18 16:02:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-04-18 16:02:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7920 transitions. [2022-04-18 16:02:14,342 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9243697478991597 [2022-04-18 16:02:14,342 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7920 transitions. [2022-04-18 16:02:14,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7920 transitions. [2022-04-18 16:02:14,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:02:14,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7920 transitions. [2022-04-18 16:02:14,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 377.14285714285717) internal successors, (7920), 21 states have internal predecessors, (7920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 16:02:14,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 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 16:02:14,361 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 408.0) internal successors, (8976), 22 states have internal predecessors, (8976), 0 states have call successors, (0), 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 16:02:14,361 INFO L186 Difference]: Start difference. First operand has 513 places, 470 transitions, 1768 flow. Second operand 21 states and 7920 transitions. [2022-04-18 16:02:14,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 512 transitions, 2036 flow [2022-04-18 16:02:14,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 512 transitions, 2022 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-04-18 16:02:14,390 INFO L242 Difference]: Finished difference. Result has 537 places, 483 transitions, 1892 flow [2022-04-18 16:02:14,390 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1762, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1892, PETRI_PLACES=537, PETRI_TRANSITIONS=483} [2022-04-18 16:02:14,391 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 152 predicate places. [2022-04-18 16:02:14,391 INFO L478 AbstractCegarLoop]: Abstraction has has 537 places, 483 transitions, 1892 flow [2022-04-18 16:02:14,392 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 377.375) internal successors, (6038), 16 states have internal predecessors, (6038), 0 states have call successors, (0), 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 16:02:14,392 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:02:14,396 INFO L255 CegarLoopForPetriNet]: trace histogram [210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:02:14,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-18 16:02:14,619 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 16:02:14,619 INFO L403 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 16:02:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:02:14,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2137014587, now seen corresponding path program 4 times [2022-04-18 16:02:14,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:02:14,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553370725] [2022-04-18 16:02:14,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:02:14,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:02:16,416 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:02:16,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1432105256] [2022-04-18 16:02:16,417 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-18 16:02:16,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:02:16,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:02:16,418 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 16:02:16,419 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 16:02:32,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-18 16:02:32,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-18 16:02:33,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 75717 conjuncts, 16 conjunts are in the unsatisfiable core [2022-04-18 16:02:33,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-18 16:02:59,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1999065 backedges. 0 proven. 1721755 refuted. 0 times theorem prover too weak. 277310 trivial. 0 not checked. [2022-04-18 16:02:59,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-18 16:03:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1999065 backedges. 0 proven. 1721755 refuted. 0 times theorem prover too weak. 277310 trivial. 0 not checked. [2022-04-18 16:03:20,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 16:03:20,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553370725] [2022-04-18 16:03:20,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-18 16:03:20,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432105256] [2022-04-18 16:03:20,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432105256] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-18 16:03:20,903 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-18 16:03:20,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-04-18 16:03:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096572095] [2022-04-18 16:03:20,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-18 16:03:20,917 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-04-18 16:03:20,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 16:03:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-04-18 16:03:20,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-04-18 16:03:20,921 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 408 [2022-04-18 16:03:20,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 483 transitions, 1892 flow. Second operand has 21 states, 21 states have (on average 377.7142857142857) internal successors, (7932), 21 states have internal predecessors, (7932), 0 states have call successors, (0), 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 16:03:20,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 16:03:20,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 408 [2022-04-18 16:03:20,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 16:04:39,888 INFO L129 PetriNetUnfolder]: 14/27862 cut-off events. [2022-04-18 16:04:39,889 INFO L130 PetriNetUnfolder]: For 10697/10698 co-relation queries the response was YES. [2022-04-18 16:04:39,959 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35141 conditions, 27862 events. 14/27862 cut-off events. For 10697/10698 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 322 event pairs, 0 based on Foata normal form. 3/27849 useless extension candidates. Maximal degree in co-relation 34918. Up to 601 conditions per place. [2022-04-18 16:04:39,981 INFO L132 encePairwiseOnDemand]: 402/408 looper letters, 56 selfloop transitions, 30 changer transitions 0/536 dead transitions. [2022-04-18 16:04:39,981 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 536 transitions, 2264 flow [2022-04-18 16:04:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-04-18 16:04:39,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-04-18 16:04:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 11309 transitions. [2022-04-18 16:04:39,987 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9239379084967321 [2022-04-18 16:04:39,987 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 11309 transitions. [2022-04-18 16:04:39,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 11309 transitions. [2022-04-18 16:04:39,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 16:04:39,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 11309 transitions. [2022-04-18 16:04:39,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 376.96666666666664) internal successors, (11309), 30 states have internal predecessors, (11309), 0 states have call successors, (0), 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 16:04:40,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 408.0) internal successors, (12648), 31 states have internal predecessors, (12648), 0 states have call successors, (0), 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 16:04:40,003 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 408.0) internal successors, (12648), 31 states have internal predecessors, (12648), 0 states have call successors, (0), 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 16:04:40,003 INFO L186 Difference]: Start difference. First operand has 537 places, 483 transitions, 1892 flow. Second operand 30 states and 11309 transitions. [2022-04-18 16:04:40,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 536 transitions, 2264 flow [2022-04-18 16:04:40,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 536 transitions, 2234 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-04-18 16:04:40,040 INFO L242 Difference]: Finished difference. Result has 564 places, 493 transitions, 2020 flow [2022-04-18 16:04:40,040 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=408, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2020, PETRI_PLACES=564, PETRI_TRANSITIONS=493} [2022-04-18 16:04:40,040 INFO L335 CegarLoopForPetriNet]: 385 programPoint places, 179 predicate places. [2022-04-18 16:04:40,041 INFO L478 AbstractCegarLoop]: Abstraction has has 564 places, 493 transitions, 2020 flow [2022-04-18 16:04:40,042 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 377.7142857142857) internal successors, (7932), 21 states have internal predecessors, (7932), 0 states have call successors, (0), 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 16:04:40,042 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 16:04:40,047 INFO L255 CegarLoopForPetriNet]: trace histogram [300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 300, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:04:40,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-18 16:04:40,275 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 16:04:40,276 INFO L403 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2022-04-18 16:04:40,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 16:04:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1403586166, now seen corresponding path program 5 times [2022-04-18 16:04:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 16:04:40,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403830920] [2022-04-18 16:04:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 16:04:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 16:04:42,976 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-18 16:04:42,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1992031664] [2022-04-18 16:04:42,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-18 16:04:42,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-18 16:04:42,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 16:04:42,978 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 16:04:42,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process Killed by 15