/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 02:01:22,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 02:01:22,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 02:01:23,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 02:01:23,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 02:01:23,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 02:01:23,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 02:01:23,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 02:01:23,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 02:01:23,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 02:01:23,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 02:01:23,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 02:01:23,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 02:01:23,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 02:01:23,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 02:01:23,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 02:01:23,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 02:01:23,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 02:01:23,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 02:01:23,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 02:01:23,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 02:01:23,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 02:01:23,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 02:01:23,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 02:01:23,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 02:01:23,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 02:01:23,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 02:01:23,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 02:01:23,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 02:01:23,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 02:01:23,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 02:01:23,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 02:01:23,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 02:01:23,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 02:01:23,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 02:01:23,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 02:01:23,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 02:01:23,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 02:01:23,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 02:01:23,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 02:01:23,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 02:01:23,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 02:01:23,044 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 02:01:23,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 02:01:23,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 02:01:23,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 02:01:23,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 02:01:23,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 02:01:23,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 02:01:23,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 02:01:23,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:01:23,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 02:01:23,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 02:01:23,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 02:01:23,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 02:01:23,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 02:01:23,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 02:01:23,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 02:01:23,048 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 02:01:23,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 02:01:23,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 02:01:23,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 02:01:23,268 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 02:01:23,269 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 02:01:23,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-01-28 02:01:24,301 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 02:01:24,501 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 02:01:24,502 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-01-28 02:01:24,515 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/701ef0dbf/cd705ba4f97548db945e81cef37f1b4c/FLAGab16c4a7e [2023-01-28 02:01:24,525 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/701ef0dbf/cd705ba4f97548db945e81cef37f1b4c [2023-01-28 02:01:24,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 02:01:24,527 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 02:01:24,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 02:01:24,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 02:01:24,530 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 02:01:24,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:01:24" (1/1) ... [2023-01-28 02:01:24,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ca2170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:24, skipping insertion in model container [2023-01-28 02:01:24,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 02:01:24" (1/1) ... [2023-01-28 02:01:24,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 02:01:24,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 02:01:24,895 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_90-arrayloop2_racing.i[47038,47051] [2023-01-28 02:01:24,903 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,904 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,904 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,904 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,921 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:01:24,932 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 02:01:24,955 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_90-arrayloop2_racing.i[47038,47051] [2023-01-28 02:01:24,958 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,958 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,958 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,958 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-28 02:01:24,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 02:01:25,006 INFO L208 MainTranslator]: Completed translation [2023-01-28 02:01:25,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25 WrapperNode [2023-01-28 02:01:25,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 02:01:25,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 02:01:25,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 02:01:25,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 02:01:25,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,045 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 304 [2023-01-28 02:01:25,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 02:01:25,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 02:01:25,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 02:01:25,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 02:01:25,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,070 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 02:01:25,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 02:01:25,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 02:01:25,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 02:01:25,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (1/1) ... [2023-01-28 02:01:25,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 02:01:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:01:25,100 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) [2023-01-28 02:01:25,107 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 [2023-01-28 02:01:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 02:01:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-28 02:01:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 02:01:25,135 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 02:01:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 02:01:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 02:01:25,135 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 02:01:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 02:01:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 02:01:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 02:01:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 02:01:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 02:01:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-28 02:01:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 02:01:25,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 02:01:25,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 02:01:25,137 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 02:01:25,254 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 02:01:25,259 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 02:01:25,629 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 02:01:25,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 02:01:25,636 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-01-28 02:01:25,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:01:25 BoogieIcfgContainer [2023-01-28 02:01:25,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 02:01:25,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 02:01:25,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 02:01:25,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 02:01:25,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 02:01:24" (1/3) ... [2023-01-28 02:01:25,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c6641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:01:25, skipping insertion in model container [2023-01-28 02:01:25,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 02:01:25" (2/3) ... [2023-01-28 02:01:25,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c6641b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 02:01:25, skipping insertion in model container [2023-01-28 02:01:25,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 02:01:25" (3/3) ... [2023-01-28 02:01:25,643 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-01-28 02:01:25,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 02:01:25,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 02:01:25,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 02:01:25,765 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 02:01:25,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-01-28 02:01:25,946 INFO L130 PetriNetUnfolder]: 77/493 cut-off events. [2023-01-28 02:01:25,946 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-01-28 02:01:25,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-01-28 02:01:25,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 302 transitions, 626 flow [2023-01-28 02:01:25,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 302 transitions, 626 flow [2023-01-28 02:01:25,968 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 02:01:25,983 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 302 transitions, 626 flow [2023-01-28 02:01:25,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 302 transitions, 626 flow [2023-01-28 02:01:25,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 302 transitions, 626 flow [2023-01-28 02:01:26,042 INFO L130 PetriNetUnfolder]: 77/493 cut-off events. [2023-01-28 02:01:26,042 INFO L131 PetriNetUnfolder]: For 8/14 co-relation queries the response was YES. [2023-01-28 02:01:26,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 493 events. 77/493 cut-off events. For 8/14 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2235 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-01-28 02:01:26,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 31320 [2023-01-28 02:01:39,759 WARN L222 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 02:01:47,023 WARN L222 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 02:01:52,789 WARN L222 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 180 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 02:01:58,062 WARN L222 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-28 02:01:58,066 INFO L134 LiptonReduction]: Checked pairs total: 50902 [2023-01-28 02:01:58,066 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-01-28 02:01:58,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 02:01:58,095 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=false, 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;@18fea9e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 02:01:58,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 02:01:58,098 INFO L130 PetriNetUnfolder]: 2/23 cut-off events. [2023-01-28 02:01:58,099 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 02:01:58,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:01:58,099 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-28 02:01:58,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:01:58,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:01:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1961127902, now seen corresponding path program 1 times [2023-01-28 02:01:58,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:01:58,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048466531] [2023-01-28 02:01:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:58,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:01:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:01:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048466531] [2023-01-28 02:01:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048466531] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:01:58,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:01:58,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 02:01:58,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501454564] [2023-01-28 02:01:58,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:01:58,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:01:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:01:58,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:01:58,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:01:58,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 558 [2023-01-28 02:01:58,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 93 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:58,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:01:58,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 558 [2023-01-28 02:01:58,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:01:59,130 INFO L130 PetriNetUnfolder]: 5341/8583 cut-off events. [2023-01-28 02:01:59,131 INFO L131 PetriNetUnfolder]: For 176/176 co-relation queries the response was YES. [2023-01-28 02:01:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16472 conditions, 8583 events. 5341/8583 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 51439 event pairs, 4400 based on Foata normal form. 1159/7780 useless extension candidates. Maximal degree in co-relation 15575. Up to 7762 conditions per place. [2023-01-28 02:01:59,148 INFO L137 encePairwiseOnDemand]: 535/558 looper letters, 50 selfloop transitions, 2 changer transitions 12/76 dead transitions. [2023-01-28 02:01:59,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 298 flow [2023-01-28 02:01:59,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:01:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:01:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 833 transitions. [2023-01-28 02:01:59,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.497610513739546 [2023-01-28 02:01:59,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 833 transitions. [2023-01-28 02:01:59,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 833 transitions. [2023-01-28 02:01:59,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:01:59,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 833 transitions. [2023-01-28 02:01:59,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,179 INFO L175 Difference]: Start difference. First operand has 66 places, 93 transitions, 208 flow. Second operand 3 states and 833 transitions. [2023-01-28 02:01:59,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 298 flow [2023-01-28 02:01:59,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 298 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 02:01:59,186 INFO L231 Difference]: Finished difference. Result has 69 places, 62 transitions, 144 flow [2023-01-28 02:01:59,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=62} [2023-01-28 02:01:59,189 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-01-28 02:01:59,190 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 62 transitions, 144 flow [2023-01-28 02:01:59,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:01:59,191 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:01:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 02:01:59,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:01:59,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:01:59,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1505272790, now seen corresponding path program 1 times [2023-01-28 02:01:59,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:01:59,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632461562] [2023-01-28 02:01:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:59,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:01:59,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:01:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632461562] [2023-01-28 02:01:59,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632461562] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 02:01:59,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 02:01:59,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 02:01:59,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739001441] [2023-01-28 02:01:59,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 02:01:59,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 02:01:59,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:01:59,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 02:01:59,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 02:01:59,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 02:01:59,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 62 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:01:59,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 02:01:59,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:01:59,654 INFO L130 PetriNetUnfolder]: 2465/4061 cut-off events. [2023-01-28 02:01:59,654 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-01-28 02:01:59,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7785 conditions, 4061 events. 2465/4061 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 21860 event pairs, 2032 based on Foata normal form. 2/3243 useless extension candidates. Maximal degree in co-relation 7766. Up to 3663 conditions per place. [2023-01-28 02:01:59,671 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 49 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-01-28 02:01:59,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 248 flow [2023-01-28 02:01:59,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 02:01:59,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 02:01:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2023-01-28 02:01:59,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4838709677419355 [2023-01-28 02:01:59,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2023-01-28 02:01:59,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2023-01-28 02:01:59,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:01:59,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2023-01-28 02:01:59,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 558.0) internal successors, (2232), 4 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,678 INFO L175 Difference]: Start difference. First operand has 69 places, 62 transitions, 144 flow. Second operand 3 states and 810 transitions. [2023-01-28 02:01:59,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 248 flow [2023-01-28 02:01:59,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 02:01:59,679 INFO L231 Difference]: Finished difference. Result has 63 places, 63 transitions, 156 flow [2023-01-28 02:01:59,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=63, PETRI_TRANSITIONS=63} [2023-01-28 02:01:59,680 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -3 predicate places. [2023-01-28 02:01:59,680 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 63 transitions, 156 flow [2023-01-28 02:01:59,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:01:59,681 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:01:59,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 02:01:59,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:01:59,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:01:59,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1860116030, now seen corresponding path program 1 times [2023-01-28 02:01:59,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:01:59,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345388173] [2023-01-28 02:01:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:59,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:01:59,717 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:01:59,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259607035] [2023-01-28 02:01:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:01:59,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:01:59,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:01:59,720 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) [2023-01-28 02:01:59,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 02:01:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 02:01:59,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 02:01:59,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:01:59,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:59,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:01:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:01:59,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:01:59,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345388173] [2023-01-28 02:01:59,889 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:01:59,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259607035] [2023-01-28 02:01:59,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259607035] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:01:59,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:01:59,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-01-28 02:01:59,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056271035] [2023-01-28 02:01:59,889 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:01:59,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:01:59,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:01:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:01:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:01:59,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 02:01:59,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 63 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:01:59,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:01:59,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 02:01:59,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:00,398 INFO L130 PetriNetUnfolder]: 2465/4067 cut-off events. [2023-01-28 02:02:00,398 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-28 02:02:00,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7813 conditions, 4067 events. 2465/4067 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 21867 event pairs, 2032 based on Foata normal form. 6/3253 useless extension candidates. Maximal degree in co-relation 7773. Up to 3663 conditions per place. [2023-01-28 02:02:00,410 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 49 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-01-28 02:02:00,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 276 flow [2023-01-28 02:02:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:02:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:02:00,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1574 transitions. [2023-01-28 02:02:00,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470131421744325 [2023-01-28 02:02:00,413 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1574 transitions. [2023-01-28 02:02:00,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1574 transitions. [2023-01-28 02:02:00,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:00,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1574 transitions. [2023-01-28 02:02:00,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 262.3333333333333) internal successors, (1574), 6 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:00,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:00,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:00,421 INFO L175 Difference]: Start difference. First operand has 63 places, 63 transitions, 156 flow. Second operand 6 states and 1574 transitions. [2023-01-28 02:02:00,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 276 flow [2023-01-28 02:02:00,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 272 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 02:02:00,423 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 194 flow [2023-01-28 02:02:00,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2023-01-28 02:02:00,423 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 4 predicate places. [2023-01-28 02:02:00,423 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 194 flow [2023-01-28 02:02:00,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 254.83333333333334) internal successors, (1529), 6 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:00,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:00,424 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:02:00,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 02:02:00,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:00,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:00,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:00,631 INFO L85 PathProgramCache]: Analyzing trace with hash 281984726, now seen corresponding path program 2 times [2023-01-28 02:02:00,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:00,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453491065] [2023-01-28 02:02:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:00,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:00,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848197040] [2023-01-28 02:02:00,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 02:02:00,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:00,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:00,674 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) [2023-01-28 02:02:00,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 02:02:00,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 02:02:00,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:02:00,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 02:02:00,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:02:00,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:00,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:02:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 02:02:01,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:01,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453491065] [2023-01-28 02:02:01,028 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:02:01,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848197040] [2023-01-28 02:02:01,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848197040] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:02:01,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:02:01,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-01-28 02:02:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19217884] [2023-01-28 02:02:01,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:02:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 02:02:01,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 02:02:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-01-28 02:02:01,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 02:02:01,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 194 flow. Second operand has 12 states, 12 states have (on average 254.41666666666666) internal successors, (3053), 12 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:01,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:01,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 02:02:01,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:01,730 INFO L130 PetriNetUnfolder]: 2465/4079 cut-off events. [2023-01-28 02:02:01,730 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-01-28 02:02:01,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7884 conditions, 4079 events. 2465/4079 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 21943 event pairs, 2032 based on Foata normal form. 12/3271 useless extension candidates. Maximal degree in co-relation 7769. Up to 3663 conditions per place. [2023-01-28 02:02:01,744 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 49 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-01-28 02:02:01,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 350 flow [2023-01-28 02:02:01,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 02:02:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 02:02:01,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3101 transitions. [2023-01-28 02:02:01,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46311230585424135 [2023-01-28 02:02:01,750 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3101 transitions. [2023-01-28 02:02:01,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3101 transitions. [2023-01-28 02:02:01,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:01,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3101 transitions. [2023-01-28 02:02:01,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 258.4166666666667) internal successors, (3101), 12 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:01,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:01,763 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 558.0) internal successors, (7254), 13 states have internal predecessors, (7254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:01,763 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 194 flow. Second operand 12 states and 3101 transitions. [2023-01-28 02:02:01,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 350 flow [2023-01-28 02:02:01,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 72 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-28 02:02:01,765 INFO L231 Difference]: Finished difference. Result has 86 places, 72 transitions, 276 flow [2023-01-28 02:02:01,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=276, PETRI_PLACES=86, PETRI_TRANSITIONS=72} [2023-01-28 02:02:01,765 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2023-01-28 02:02:01,766 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 72 transitions, 276 flow [2023-01-28 02:02:01,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 254.41666666666666) internal successors, (3053), 12 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:01,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:01,767 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 02:02:01,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 02:02:01,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 02:02:01,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:01,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:01,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1737594710, now seen corresponding path program 3 times [2023-01-28 02:02:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:01,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671841039] [2023-01-28 02:02:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:02,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:02,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418130325] [2023-01-28 02:02:02,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 02:02:02,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:02,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:02,087 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) [2023-01-28 02:02:02,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 02:02:02,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 02:02:02,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:02:02,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 02:02:02,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:02:02,420 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-28 02:02:02,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:02:02,449 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-28 02:02:02,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:02,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671841039] [2023-01-28 02:02:02,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:02:02,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418130325] [2023-01-28 02:02:02,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418130325] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:02:02,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:02:02,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-01-28 02:02:02,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248406005] [2023-01-28 02:02:02,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:02:02,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 02:02:02,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:02,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 02:02:02,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 02:02:02,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 558 [2023-01-28 02:02:02,454 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 72 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:02,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:02,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 558 [2023-01-28 02:02:02,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:02,925 INFO L130 PetriNetUnfolder]: 2471/4134 cut-off events. [2023-01-28 02:02:02,926 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-01-28 02:02:02,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8101 conditions, 4134 events. 2471/4134 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22052 event pairs, 2032 based on Foata normal form. 3/3333 useless extension candidates. Maximal degree in co-relation 7794. Up to 3657 conditions per place. [2023-01-28 02:02:02,948 INFO L137 encePairwiseOnDemand]: 554/558 looper letters, 93 selfloop transitions, 6 changer transitions 0/111 dead transitions. [2023-01-28 02:02:02,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 823 flow [2023-01-28 02:02:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 02:02:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 02:02:02,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1562 transitions. [2023-01-28 02:02:02,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46654719235364395 [2023-01-28 02:02:02,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1562 transitions. [2023-01-28 02:02:02,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1562 transitions. [2023-01-28 02:02:02,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:02,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1562 transitions. [2023-01-28 02:02:02,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 260.3333333333333) internal successors, (1562), 6 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:02,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:02,958 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 558.0) internal successors, (3906), 7 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:02,958 INFO L175 Difference]: Start difference. First operand has 86 places, 72 transitions, 276 flow. Second operand 6 states and 1562 transitions. [2023-01-28 02:02:02,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 823 flow [2023-01-28 02:02:02,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 111 transitions, 629 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-01-28 02:02:02,965 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 311 flow [2023-01-28 02:02:02,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2023-01-28 02:02:02,967 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2023-01-28 02:02:02,967 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 311 flow [2023-01-28 02:02:02,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 252.16666666666666) internal successors, (1513), 6 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:02,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:02,968 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-28 02:02:02,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 02:02:03,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:03,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:03,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:03,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1081566990, now seen corresponding path program 4 times [2023-01-28 02:02:03,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:03,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778036321] [2023-01-28 02:02:03,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:03,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:03,536 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:03,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605838698] [2023-01-28 02:02:03,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 02:02:03,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:03,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:03,537 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) [2023-01-28 02:02:03,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 02:02:05,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 02:02:05,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 02:02:05,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 9505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 02:02:05,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 02:02:05,634 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-28 02:02:05,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 02:02:05,792 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-28 02:02:05,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 02:02:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778036321] [2023-01-28 02:02:05,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-28 02:02:05,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605838698] [2023-01-28 02:02:05,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605838698] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 02:02:05,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-28 02:02:05,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-01-28 02:02:05,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433570115] [2023-01-28 02:02:05,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-28 02:02:05,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-28 02:02:05,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 02:02:05,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-28 02:02:05,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-01-28 02:02:05,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 558 [2023-01-28 02:02:05,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 311 flow. Second operand has 24 states, 24 states have (on average 254.33333333333334) internal successors, (6104), 24 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:05,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 02:02:05,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 558 [2023-01-28 02:02:05,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 02:02:07,674 INFO L130 PetriNetUnfolder]: 2471/4182 cut-off events. [2023-01-28 02:02:07,674 INFO L131 PetriNetUnfolder]: For 3505/3505 co-relation queries the response was YES. [2023-01-28 02:02:07,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 4182 events. 2471/4182 cut-off events. For 3505/3505 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 22045 event pairs, 2032 based on Foata normal form. 48/3426 useless extension candidates. Maximal degree in co-relation 7799. Up to 3669 conditions per place. [2023-01-28 02:02:07,688 INFO L137 encePairwiseOnDemand]: 555/558 looper letters, 51 selfloop transitions, 24 changer transitions 0/87 dead transitions. [2023-01-28 02:02:07,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 87 transitions, 533 flow [2023-01-28 02:02:07,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-28 02:02:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-28 02:02:07,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 6155 transitions. [2023-01-28 02:02:07,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596027479091995 [2023-01-28 02:02:07,699 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 6155 transitions. [2023-01-28 02:02:07,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 6155 transitions. [2023-01-28 02:02:07,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 02:02:07,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 6155 transitions. [2023-01-28 02:02:07,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 256.4583333333333) internal successors, (6155), 24 states have internal predecessors, (6155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:07,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:07,723 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 558.0) internal successors, (13950), 25 states have internal predecessors, (13950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:07,723 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 311 flow. Second operand 24 states and 6155 transitions. [2023-01-28 02:02:07,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 87 transitions, 533 flow [2023-01-28 02:02:07,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 87 transitions, 525 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-28 02:02:07,742 INFO L231 Difference]: Finished difference. Result has 124 places, 87 transitions, 545 flow [2023-01-28 02:02:07,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=558, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=545, PETRI_PLACES=124, PETRI_TRANSITIONS=87} [2023-01-28 02:02:07,743 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 58 predicate places. [2023-01-28 02:02:07,743 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 87 transitions, 545 flow [2023-01-28 02:02:07,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 254.33333333333334) internal successors, (6104), 24 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 02:02:07,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 02:02:07,744 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-28 02:02:07,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 02:02:07,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:07,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 02:02:07,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 02:02:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1744029938, now seen corresponding path program 5 times [2023-01-28 02:02:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 02:02:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853691885] [2023-01-28 02:02:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 02:02:07,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 02:02:08,602 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-28 02:02:08,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375430834] [2023-01-28 02:02:08,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 02:02:08,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 02:02:08,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 02:02:08,604 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) [2023-01-28 02:02:08,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-28 02:16:08,116 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:16:08,146 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 02:16:09,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-28 02:16:09,317 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-28 02:16:09,360 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-01-28 02:16:09,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-28 02:16:09,363 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 02:16:09,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 02:16:09,364 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-01-28 02:16:09,365 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 02:16:09,365 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-01-28 02:16:09,367 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (1/2) [2023-01-28 02:16:09,369 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 02:16:09,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 02:16:09,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 02:16:09 BasicIcfg [2023-01-28 02:16:09,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 02:16:09,372 INFO L158 Benchmark]: Toolchain (without parser) took 884844.65ms. Allocated memory was 599.8MB in the beginning and 761.3MB in the end (delta: 161.5MB). Free memory was 544.0MB in the beginning and 642.8MB in the end (delta: -98.8MB). Peak memory consumption was 486.2MB. Max. memory is 16.0GB. [2023-01-28 02:16:09,372 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 373.3MB. Free memory is still 318.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 02:16:09,372 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.32ms. Allocated memory is still 599.8MB. Free memory was 544.0MB in the beginning and 512.2MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-01-28 02:16:09,374 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.38ms. Allocated memory is still 599.8MB. Free memory was 512.2MB in the beginning and 509.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 02:16:09,375 INFO L158 Benchmark]: Boogie Preprocessor took 28.40ms. Allocated memory is still 599.8MB. Free memory was 509.0MB in the beginning and 506.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 02:16:09,376 INFO L158 Benchmark]: RCFGBuilder took 563.11ms. Allocated memory is still 599.8MB. Free memory was 506.2MB in the beginning and 542.9MB in the end (delta: -36.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.0GB. [2023-01-28 02:16:09,377 INFO L158 Benchmark]: TraceAbstraction took 883732.41ms. Allocated memory was 599.8MB in the beginning and 761.3MB in the end (delta: 161.5MB). Free memory was 542.9MB in the beginning and 642.8MB in the end (delta: -100.0MB). Peak memory consumption was 485.1MB. Max. memory is 16.0GB. [2023-01-28 02:16:09,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 373.3MB. Free memory is still 318.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 478.32ms. Allocated memory is still 599.8MB. Free memory was 544.0MB in the beginning and 512.2MB in the end (delta: 31.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.38ms. Allocated memory is still 599.8MB. Free memory was 512.2MB in the beginning and 509.0MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.40ms. Allocated memory is still 599.8MB. Free memory was 509.0MB in the beginning and 506.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 563.11ms. Allocated memory is still 599.8MB. Free memory was 506.2MB in the beginning and 542.9MB in the end (delta: -36.6MB). Peak memory consumption was 15.8MB. Max. memory is 16.0GB. * TraceAbstraction took 883732.41ms. Allocated memory was 599.8MB in the beginning and 761.3MB in the end (delta: 161.5MB). Free memory was 542.9MB in the beginning and 642.8MB in the end (delta: -100.0MB). Peak memory consumption was 485.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.1s, 261 PlacesBefore, 66 PlacesAfterwards, 302 TransitionsBefore, 93 TransitionsAfterwards, 31320 CoEnabledTransitionPairs, 7 FixpointIterations, 62 TrivialSequentialCompositions, 138 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 38 ConcurrentYvCompositions, 14 ChoiceCompositions, 256 TotalNumberOfCompositions, 50902 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27873, independent: 27467, independent conditional: 0, independent unconditional: 27467, dependent: 406, dependent conditional: 0, dependent unconditional: 406, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15708, independent: 15630, independent conditional: 0, independent unconditional: 15630, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27873, independent: 11837, independent conditional: 0, independent unconditional: 11837, dependent: 328, dependent conditional: 0, dependent unconditional: 328, unknown: 15708, unknown conditional: 0, unknown unconditional: 15708] , Statistics on independence cache: Total cache size (in pairs): 515, Positive cache size: 479, Positive conditional cache size: 0, Positive unconditional cache size: 479, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 1082]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 399 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 883.6s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 32.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 877 IncrementalHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 877 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=545occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11113 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown