./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.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 dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:37:53,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:37:53,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:37:53,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:37:53,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:37:53,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:37:53,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:37:53,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:37:53,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:37:53,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:37:53,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:37:53,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:37:53,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:37:53,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:37:53,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:37:53,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:37:53,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:37:53,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:37:53,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:37:53,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:37:53,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:37:53,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:37:53,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:37:53,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:37:53,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:37:53,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:37:53,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:37:53,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:37:53,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:37:53,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:37:53,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:37:53,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:37:53,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:37:53,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:37:53,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:37:53,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:37:53,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:37:53,427 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:37:53,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:37:53,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:37:53,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:37:53,430 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:37:53,453 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:37:53,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:37:53,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:37:53,455 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:37:53,455 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:37:53,455 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:37:53,456 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:37:53,456 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:37:53,456 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:37:53,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:37:53,457 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:37:53,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:37:53,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:37:53,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:37:53,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:37:53,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:37:53,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:37:53,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:37:53,458 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:37:53,458 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:37:53,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:37:53,459 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:37:53,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:37:53,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:37:53,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:37:53,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:37:53,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:37:53,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:37:53,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:37:53,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:37:53,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:37:53,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:37:53,460 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:37:53,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:37:53,461 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:37:53,461 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:37:53,461 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:37:53,461 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dad265ed8a17f32bb0a174302dfe188f9a15f60b81cc9c28a67851ab05270da2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:37:53,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:37:53,688 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:37:53,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:37:53,690 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:37:53,690 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:37:53,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-29 18:37:54,584 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:37:54,810 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:37:54,811 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_93-evilcollapse_racefree.i [2023-08-29 18:37:54,822 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45739d80/a5ce159bfbb144e698d658f6564ca252/FLAG9823e81e9 [2023-08-29 18:37:54,836 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c45739d80/a5ce159bfbb144e698d658f6564ca252 [2023-08-29 18:37:54,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:37:54,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:37:54,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:37:54,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:37:54,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:37:54,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:37:54" (1/1) ... [2023-08-29 18:37:54,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e561ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:54, skipping insertion in model container [2023-08-29 18:37:54,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:37:54" (1/1) ... [2023-08-29 18:37:54,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:37:54,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:37:55,227 WARN L247 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_93-evilcollapse_racefree.i[47038,47051] [2023-08-29 18:37:55,247 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,248 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,250 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,252 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,286 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:37:55,301 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:37:55,329 WARN L247 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_93-evilcollapse_racefree.i[47038,47051] [2023-08-29 18:37:55,371 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,371 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,373 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,374 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 18:37:55,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:37:55,467 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:37:55,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55 WrapperNode [2023-08-29 18:37:55,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:37:55,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:37:55,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:37:55,469 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:37:55,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,531 INFO L138 Inliner]: procedures = 279, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 350 [2023-08-29 18:37:55,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:37:55,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:37:55,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:37:55,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:37:55,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,582 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:37:55,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:37:55,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:37:55,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:37:55,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (1/1) ... [2023-08-29 18:37:55,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:37:55,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:37:55,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 18:37:55,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 18:37:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:37:55,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 18:37:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:37:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:37:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:37:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:37:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 18:37:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:37:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 18:37:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:37:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:37:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:37:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:37:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:37:55,659 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 18:37:55,796 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:37:55,797 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:37:56,190 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:37:56,199 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:37:56,200 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 18:37:56,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:37:56 BoogieIcfgContainer [2023-08-29 18:37:56,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:37:56,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:37:56,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:37:56,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:37:56,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:37:54" (1/3) ... [2023-08-29 18:37:56,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5031c5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:37:56, skipping insertion in model container [2023-08-29 18:37:56,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:37:55" (2/3) ... [2023-08-29 18:37:56,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5031c5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:37:56, skipping insertion in model container [2023-08-29 18:37:56,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:37:56" (3/3) ... [2023-08-29 18:37:56,207 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_93-evilcollapse_racefree.i [2023-08-29 18:37:56,212 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:37:56,218 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:37:56,218 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-29 18:37:56,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:37:56,286 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 18:37:56,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 378 transitions, 764 flow [2023-08-29 18:37:56,432 INFO L130 PetriNetUnfolder]: 29/400 cut-off events. [2023-08-29 18:37:56,433 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 18:37:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 400 events. 29/400 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1003 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 234. Up to 4 conditions per place. [2023-08-29 18:37:56,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 354 places, 378 transitions, 764 flow [2023-08-29 18:37:56,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 354 places, 378 transitions, 764 flow [2023-08-29 18:37:56,449 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:37:56,457 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 354 places, 378 transitions, 764 flow [2023-08-29 18:37:56,460 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 354 places, 378 transitions, 764 flow [2023-08-29 18:37:56,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 354 places, 378 transitions, 764 flow [2023-08-29 18:37:56,500 INFO L130 PetriNetUnfolder]: 29/400 cut-off events. [2023-08-29 18:37:56,501 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-08-29 18:37:56,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 400 events. 29/400 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1003 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 234. Up to 4 conditions per place. [2023-08-29 18:37:56,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 7392 [2023-08-29 18:39:05,208 WARN L222 SmtUtils]: Spent 29.02s on a formula simplification. DAG size of input: 145 DAG size of output: 141 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:39:13,277 WARN L222 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:39:44,365 WARN L222 SmtUtils]: Spent 31.09s on a formula simplification. DAG size of input: 145 DAG size of output: 141 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:39:52,164 WARN L222 SmtUtils]: Spent 7.80s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:40:55,789 WARN L222 SmtUtils]: Spent 1.01m on a formula simplification. DAG size of input: 184 DAG size of output: 178 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:41:19,082 WARN L222 SmtUtils]: Spent 23.29s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:42:20,666 WARN L222 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 184 DAG size of output: 178 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:42:44,435 WARN L222 SmtUtils]: Spent 23.77s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:45:09,035 WARN L222 SmtUtils]: Spent 2.41m on a formula simplification that was a NOOP. DAG size: 260 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:47:03,024 WARN L222 SmtUtils]: Spent 1.90m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:49:03,115 WARN L222 SmtUtils]: Spent 2.00m on a formula simplification that was a NOOP. DAG size: 260 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:50:47,996 WARN L222 SmtUtils]: Spent 1.75m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 18:50:47,999 INFO L134 LiptonReduction]: Checked pairs total: 28656 [2023-08-29 18:50:47,999 INFO L136 LiptonReduction]: Total number of compositions: 359 [2023-08-29 18:50:48,007 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:50:48,010 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@244aa536, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:50:48,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-29 18:50:48,011 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 18:50:48,012 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:50:48,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:50:48,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:50:48,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:50:48,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:50:48,015 INFO L85 PathProgramCache]: Analyzing trace with hash 43934, now seen corresponding path program 1 times [2023-08-29 18:50:48,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:50:48,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243079457] [2023-08-29 18:50:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:50:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:50:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:50:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:50:48,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:50:48,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243079457] [2023-08-29 18:50:48,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243079457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:50:48,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:50:48,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:50:48,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526848943] [2023-08-29 18:50:48,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:50:48,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:50:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:50:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:50:48,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:50:48,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 355 out of 737 [2023-08-29 18:50:48,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 99 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:48,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:50:48,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 355 of 737 [2023-08-29 18:50:48,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:50:49,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:50:50,068 INFO L130 PetriNetUnfolder]: 106/457 cut-off events. [2023-08-29 18:50:50,068 INFO L131 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2023-08-29 18:50:50,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 457 events. 106/457 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2076 event pairs, 85 based on Foata normal form. 30/433 useless extension candidates. Maximal degree in co-relation 642. Up to 217 conditions per place. [2023-08-29 18:50:50,071 INFO L137 encePairwiseOnDemand]: 715/737 looper letters, 32 selfloop transitions, 0 changer transitions 0/77 dead transitions. [2023-08-29 18:50:50,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 226 flow [2023-08-29 18:50:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:50:50,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:50:50,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 764 transitions. [2023-08-29 18:50:50,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183175033921302 [2023-08-29 18:50:50,090 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 764 transitions. [2023-08-29 18:50:50,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 764 transitions. [2023-08-29 18:50:50,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:50:50,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 764 transitions. [2023-08-29 18:50:50,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 382.0) internal successors, (764), 2 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:50,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 737.0) internal successors, (2211), 3 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:50,104 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 737.0) internal successors, (2211), 3 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:50,108 INFO L175 Difference]: Start difference. First operand has 86 places, 99 transitions, 206 flow. Second operand 2 states and 764 transitions. [2023-08-29 18:50:50,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 226 flow [2023-08-29 18:50:50,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:50:50,112 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 162 flow [2023-08-29 18:50:50,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=162, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2023-08-29 18:50:50,117 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -11 predicate places. [2023-08-29 18:50:50,117 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 162 flow [2023-08-29 18:50:50,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:50,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:50:50,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-29 18:50:50,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:50:50,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:50:50,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:50:50,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1970087283, now seen corresponding path program 1 times [2023-08-29 18:50:50,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:50:50,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698260777] [2023-08-29 18:50:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:50:50,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:50:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:50:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:50:50,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:50:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698260777] [2023-08-29 18:50:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698260777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:50:50,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:50:50,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:50:50,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733608980] [2023-08-29 18:50:50,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:50:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:50:50,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:50:50,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:50:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:50:50,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 737 [2023-08-29 18:50:50,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 352.6666666666667) internal successors, (1058), 3 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:50,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:50:50,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 737 [2023-08-29 18:50:50,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:50:52,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:50:52,171 INFO L130 PetriNetUnfolder]: 107/460 cut-off events. [2023-08-29 18:50:52,171 INFO L131 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2023-08-29 18:50:52,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 460 events. 107/460 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2077 event pairs, 85 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 683. Up to 217 conditions per place. [2023-08-29 18:50:52,173 INFO L137 encePairwiseOnDemand]: 734/737 looper letters, 33 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-29 18:50:52,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 238 flow [2023-08-29 18:50:52,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:50:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:50:52,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1089 transitions. [2023-08-29 18:50:52,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925373134328358 [2023-08-29 18:50:52,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1089 transitions. [2023-08-29 18:50:52,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1089 transitions. [2023-08-29 18:50:52,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:50:52,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1089 transitions. [2023-08-29 18:50:52,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:52,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:52,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:52,183 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 162 flow. Second operand 3 states and 1089 transitions. [2023-08-29 18:50:52,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 238 flow [2023-08-29 18:50:52,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 238 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:50:52,185 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 174 flow [2023-08-29 18:50:52,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-08-29 18:50:52,186 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -8 predicate places. [2023-08-29 18:50:52,187 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 174 flow [2023-08-29 18:50:52,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 352.6666666666667) internal successors, (1058), 3 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:52,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:50:52,187 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:50:52,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:50:52,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:50:52,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:50:52,191 INFO L85 PathProgramCache]: Analyzing trace with hash -22805985, now seen corresponding path program 1 times [2023-08-29 18:50:52,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:50:52,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312868591] [2023-08-29 18:50:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:50:52,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:50:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:50:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:50:52,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:50:52,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312868591] [2023-08-29 18:50:52,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312868591] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:50:52,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:50:52,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 18:50:52,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319570416] [2023-08-29 18:50:52,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:50:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:50:52,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:50:52,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:50:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:50:52,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 737 [2023-08-29 18:50:52,303 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:52,303 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:50:52,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 737 [2023-08-29 18:50:52,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:50:53,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:50:54,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:50:55,111 INFO L130 PetriNetUnfolder]: 107/462 cut-off events. [2023-08-29 18:50:55,112 INFO L131 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2023-08-29 18:50:55,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 462 events. 107/462 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2082 event pairs, 85 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 692. Up to 220 conditions per place. [2023-08-29 18:50:55,113 INFO L137 encePairwiseOnDemand]: 734/737 looper letters, 32 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-29 18:50:55,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 244 flow [2023-08-29 18:50:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:50:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:50:55,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1087 transitions. [2023-08-29 18:50:55,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49163274536408863 [2023-08-29 18:50:55,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1087 transitions. [2023-08-29 18:50:55,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1087 transitions. [2023-08-29 18:50:55,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:50:55,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1087 transitions. [2023-08-29 18:50:55,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 362.3333333333333) internal successors, (1087), 3 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:55,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:55,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 737.0) internal successors, (2948), 4 states have internal predecessors, (2948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:55,122 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 174 flow. Second operand 3 states and 1087 transitions. [2023-08-29 18:50:55,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 244 flow [2023-08-29 18:50:55,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:50:55,124 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 186 flow [2023-08-29 18:50:55,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-08-29 18:50:55,124 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -6 predicate places. [2023-08-29 18:50:55,125 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 186 flow [2023-08-29 18:50:55,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 353.3333333333333) internal successors, (1060), 3 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:55,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:50:55,125 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:50:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 18:50:55,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:50:55,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:50:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash 2008955751, now seen corresponding path program 1 times [2023-08-29 18:50:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:50:55,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321854944] [2023-08-29 18:50:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:50:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:50:55,171 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:50:55,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091703172] [2023-08-29 18:50:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:50:55,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:50:55,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:50:55,174 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:50:55,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:50:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:50:55,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:50:55,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:50:55,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:50:55,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:50:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:50:55,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:50:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321854944] [2023-08-29 18:50:55,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:50:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091703172] [2023-08-29 18:50:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091703172] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:50:55,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:50:55,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-29 18:50:55,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180914532] [2023-08-29 18:50:55,495 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:50:55,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:50:55,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:50:55,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:50:55,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:50:55,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 737 [2023-08-29 18:50:55,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 351.8333333333333) internal successors, (2111), 6 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:50:55,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:50:55,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 737 [2023-08-29 18:50:55,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:50:58,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:50:59,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:01,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:01,210 INFO L130 PetriNetUnfolder]: 107/468 cut-off events. [2023-08-29 18:51:01,210 INFO L131 PetriNetUnfolder]: For 4/7 co-relation queries the response was YES. [2023-08-29 18:51:01,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 468 events. 107/468 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2098 event pairs, 85 based on Foata normal form. 6/422 useless extension candidates. Maximal degree in co-relation 719. Up to 220 conditions per place. [2023-08-29 18:51:01,211 INFO L137 encePairwiseOnDemand]: 734/737 looper letters, 32 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2023-08-29 18:51:01,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 272 flow [2023-08-29 18:51:01,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:51:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:51:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2139 transitions. [2023-08-29 18:51:01,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837177747625509 [2023-08-29 18:51:01,215 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2139 transitions. [2023-08-29 18:51:01,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2139 transitions. [2023-08-29 18:51:01,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:51:01,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2139 transitions. [2023-08-29 18:51:01,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 356.5) internal successors, (2139), 6 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:01,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 737.0) internal successors, (5159), 7 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:01,225 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 737.0) internal successors, (5159), 7 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:01,226 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 186 flow. Second operand 6 states and 2139 transitions. [2023-08-29 18:51:01,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 272 flow [2023-08-29 18:51:01,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 268 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 18:51:01,228 INFO L231 Difference]: Finished difference. Result has 87 places, 82 transitions, 224 flow [2023-08-29 18:51:01,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=87, PETRI_TRANSITIONS=82} [2023-08-29 18:51:01,228 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 1 predicate places. [2023-08-29 18:51:01,229 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 82 transitions, 224 flow [2023-08-29 18:51:01,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 351.8333333333333) internal successors, (2111), 6 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:01,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:51:01,230 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:51:01,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-29 18:51:01,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:51:01,436 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:51:01,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:51:01,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1878256609, now seen corresponding path program 2 times [2023-08-29 18:51:01,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:51:01,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076601603] [2023-08-29 18:51:01,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:51:01,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:51:01,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:51:01,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448217591] [2023-08-29 18:51:01,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 18:51:01,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:51:01,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:51:01,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:51:01,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:51:02,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 18:51:02,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:51:02,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 3951 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 18:51:02,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:51:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:51:02,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:51:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 18:51:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:51:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076601603] [2023-08-29 18:51:02,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:51:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448217591] [2023-08-29 18:51:02,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448217591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:51:02,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:51:02,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-29 18:51:02,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840311832] [2023-08-29 18:51:02,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:51:02,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 18:51:02,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:51:02,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 18:51:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-29 18:51:02,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 737 [2023-08-29 18:51:02,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 82 transitions, 224 flow. Second operand has 12 states, 12 states have (on average 351.4166666666667) internal successors, (4217), 12 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:02,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:51:02,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 737 [2023-08-29 18:51:02,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:51:05,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:08,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:09,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:10,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:13,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:14,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:15,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:15,825 INFO L130 PetriNetUnfolder]: 107/480 cut-off events. [2023-08-29 18:51:15,825 INFO L131 PetriNetUnfolder]: For 84/87 co-relation queries the response was YES. [2023-08-29 18:51:15,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 480 events. 107/480 cut-off events. For 84/87 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2148 event pairs, 85 based on Foata normal form. 12/440 useless extension candidates. Maximal degree in co-relation 787. Up to 220 conditions per place. [2023-08-29 18:51:15,827 INFO L137 encePairwiseOnDemand]: 734/737 looper letters, 32 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-08-29 18:51:15,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 346 flow [2023-08-29 18:51:15,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 18:51:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 18:51:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4248 transitions. [2023-08-29 18:51:15,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48032564450474896 [2023-08-29 18:51:15,834 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4248 transitions. [2023-08-29 18:51:15,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4248 transitions. [2023-08-29 18:51:15,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:51:15,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4248 transitions. [2023-08-29 18:51:15,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 354.0) internal successors, (4248), 12 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:15,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 737.0) internal successors, (9581), 13 states have internal predecessors, (9581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:15,855 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 737.0) internal successors, (9581), 13 states have internal predecessors, (9581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:15,855 INFO L175 Difference]: Start difference. First operand has 87 places, 82 transitions, 224 flow. Second operand 12 states and 4248 transitions. [2023-08-29 18:51:15,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 346 flow [2023-08-29 18:51:15,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 88 transitions, 332 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 18:51:15,860 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 306 flow [2023-08-29 18:51:15,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=306, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2023-08-29 18:51:15,861 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 17 predicate places. [2023-08-29 18:51:15,862 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 306 flow [2023-08-29 18:51:15,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 351.4166666666667) internal successors, (4217), 12 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:15,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:51:15,863 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:51:15,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 18:51:16,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:51:16,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:51:16,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:51:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash 220811039, now seen corresponding path program 3 times [2023-08-29 18:51:16,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:51:16,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128285386] [2023-08-29 18:51:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:51:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:51:16,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:51:16,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1224263718] [2023-08-29 18:51:16,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 18:51:16,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:51:16,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:51:16,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:51:16,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:51:17,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 18:51:17,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:51:17,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:51:17,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:51:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-29 18:51:17,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:51:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-29 18:51:17,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:51:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128285386] [2023-08-29 18:51:17,843 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:51:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224263718] [2023-08-29 18:51:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224263718] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:51:17,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:51:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-08-29 18:51:17,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737650123] [2023-08-29 18:51:17,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:51:17,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:51:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:51:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:51:17,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:51:17,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 737 [2023-08-29 18:51:17,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 306 flow. Second operand has 6 states, 6 states have (on average 352.1666666666667) internal successors, (2113), 6 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:17,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:51:17,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 737 [2023-08-29 18:51:17,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:51:19,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:20,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:22,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:24,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:24,582 INFO L130 PetriNetUnfolder]: 109/507 cut-off events. [2023-08-29 18:51:24,582 INFO L131 PetriNetUnfolder]: For 166/169 co-relation queries the response was YES. [2023-08-29 18:51:24,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 507 events. 109/507 cut-off events. For 166/169 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2084 event pairs, 85 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 973. Up to 214 conditions per place. [2023-08-29 18:51:24,584 INFO L137 encePairwiseOnDemand]: 733/737 looper letters, 76 selfloop transitions, 6 changer transitions 0/127 dead transitions. [2023-08-29 18:51:24,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 127 transitions, 819 flow [2023-08-29 18:51:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 18:51:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 18:51:24,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2145 transitions. [2023-08-29 18:51:24,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48507462686567165 [2023-08-29 18:51:24,588 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2145 transitions. [2023-08-29 18:51:24,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2145 transitions. [2023-08-29 18:51:24,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:51:24,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2145 transitions. [2023-08-29 18:51:24,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 357.5) internal successors, (2145), 6 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:24,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 737.0) internal successors, (5159), 7 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:24,596 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 737.0) internal successors, (5159), 7 states have internal predecessors, (5159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:24,596 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 306 flow. Second operand 6 states and 2145 transitions. [2023-08-29 18:51:24,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 127 transitions, 819 flow [2023-08-29 18:51:24,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 127 transitions, 625 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-08-29 18:51:24,600 INFO L231 Difference]: Finished difference. Result has 107 places, 91 transitions, 341 flow [2023-08-29 18:51:24,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=107, PETRI_TRANSITIONS=91} [2023-08-29 18:51:24,601 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 21 predicate places. [2023-08-29 18:51:24,601 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 91 transitions, 341 flow [2023-08-29 18:51:24,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 352.1666666666667) internal successors, (2113), 6 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:24,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:51:24,602 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:51:24,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-29 18:51:24,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:51:24,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:51:24,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:51:24,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1457192995, now seen corresponding path program 4 times [2023-08-29 18:51:24,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:51:24,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964963066] [2023-08-29 18:51:24,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:51:24,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:51:26,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:51:26,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881428331] [2023-08-29 18:51:26,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 18:51:26,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:51:26,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:51:26,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:51:26,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 18:51:33,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 18:51:33,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 18:51:34,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 38067 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 18:51:34,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:51:34,195 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-29 18:51:34,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 18:51:34,372 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-08-29 18:51:34,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:51:34,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964963066] [2023-08-29 18:51:34,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 18:51:34,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881428331] [2023-08-29 18:51:34,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881428331] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 18:51:34,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 18:51:34,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-29 18:51:34,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639753270] [2023-08-29 18:51:34,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 18:51:34,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-29 18:51:34,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:51:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-29 18:51:34,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-08-29 18:51:34,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 737 [2023-08-29 18:51:34,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 91 transitions, 341 flow. Second operand has 24 states, 24 states have (on average 351.3333333333333) internal successors, (8432), 24 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:51:34,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:51:34,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 737 [2023-08-29 18:51:34,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:51:36,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:38,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:39,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:40,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:42,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:43,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:45,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:46,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:48,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:51,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:53,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:54,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:56,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:51:58,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:52:00,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:52:03,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:52:04,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 18:52:05,101 INFO L130 PetriNetUnfolder]: 109/555 cut-off events. [2023-08-29 18:52:05,101 INFO L131 PetriNetUnfolder]: For 3492/3495 co-relation queries the response was YES. [2023-08-29 18:52:05,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 555 events. 109/555 cut-off events. For 3492/3495 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2084 event pairs, 85 based on Foata normal form. 48/551 useless extension candidates. Maximal degree in co-relation 1086. Up to 226 conditions per place. [2023-08-29 18:52:05,104 INFO L137 encePairwiseOnDemand]: 734/737 looper letters, 34 selfloop transitions, 24 changer transitions 0/103 dead transitions. [2023-08-29 18:52:05,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 103 transitions, 529 flow [2023-08-29 18:52:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-29 18:52:05,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-29 18:52:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 8466 transitions. [2023-08-29 18:52:05,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47862957937584805 [2023-08-29 18:52:05,117 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 8466 transitions. [2023-08-29 18:52:05,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 8466 transitions. [2023-08-29 18:52:05,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:52:05,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 8466 transitions. [2023-08-29 18:52:05,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 352.75) internal successors, (8466), 24 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:52:05,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 737.0) internal successors, (18425), 25 states have internal predecessors, (18425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:52:05,146 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 737.0) internal successors, (18425), 25 states have internal predecessors, (18425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:52:05,146 INFO L175 Difference]: Start difference. First operand has 107 places, 91 transitions, 341 flow. Second operand 24 states and 8466 transitions. [2023-08-29 18:52:05,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 103 transitions, 529 flow [2023-08-29 18:52:05,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 103 transitions, 521 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 18:52:05,151 INFO L231 Difference]: Finished difference. Result has 141 places, 103 transitions, 575 flow [2023-08-29 18:52:05,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=737, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=575, PETRI_PLACES=141, PETRI_TRANSITIONS=103} [2023-08-29 18:52:05,151 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 55 predicate places. [2023-08-29 18:52:05,152 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 103 transitions, 575 flow [2023-08-29 18:52:05,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 351.3333333333333) internal successors, (8432), 24 states have internal predecessors, (8432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 18:52:05,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:52:05,153 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-08-29 18:52:05,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 18:52:05,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:52:05,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-08-29 18:52:05,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:52:05,360 INFO L85 PathProgramCache]: Analyzing trace with hash -230880221, now seen corresponding path program 5 times [2023-08-29 18:52:05,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:52:05,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213821209] [2023-08-29 18:52:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:52:05,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:52:08,163 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 18:52:08,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243345790] [2023-08-29 18:52:08,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 18:52:08,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:52:08,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:52:08,165 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:52:08,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15