/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 AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 07:44:07,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 07:44:07,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 07:44:07,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 07:44:07,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 07:44:07,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 07:44:07,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 07:44:07,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 07:44:07,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 07:44:07,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 07:44:07,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 07:44:07,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 07:44:07,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 07:44:07,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 07:44:07,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 07:44:07,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 07:44:07,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 07:44:07,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 07:44:07,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 07:44:07,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 07:44:07,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 07:44:07,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 07:44:07,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 07:44:07,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 07:44:07,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 07:44:07,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 07:44:07,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 07:44:07,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 07:44:07,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 07:44:07,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 07:44:07,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 07:44:07,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 07:44:07,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 07:44:07,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 07:44:07,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 07:44:07,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 07:44:07,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 07:44:07,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 07:44:07,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 07:44:07,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 07:44:07,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 07:44:07,935 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 07:44:07,966 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 07:44:07,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 07:44:07,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 07:44:07,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 07:44:07,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 07:44:07,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 07:44:07,968 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 07:44:07,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 07:44:07,969 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 07:44:07,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 07:44:07,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 07:44:07,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 07:44:07,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 07:44:07,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 07:44:07,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 07:44:07,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:44:07,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 07:44:07,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 07:44:07,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 07:44:07,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 07:44:07,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 07:44:07,972 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 07:44:07,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 07:44:07,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 07:44:08,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 07:44:08,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 07:44:08,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 07:44:08,200 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 07:44:08,200 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 07:44:08,201 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-01-28 07:44:09,198 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 07:44:09,338 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 07:44:09,338 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2023-01-28 07:44:09,346 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62343103/ce315fa2eea44611ad2b257bf8504031/FLAG0d199d250 [2023-01-28 07:44:09,355 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f62343103/ce315fa2eea44611ad2b257bf8504031 [2023-01-28 07:44:09,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 07:44:09,358 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 07:44:09,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 07:44:09,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 07:44:09,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 07:44:09,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31bbbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09, skipping insertion in model container [2023-01-28 07:44:09,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 07:44:09,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 07:44:09,557 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_03-munge_racing.i[30176,30189] [2023-01-28 07:44:09,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:44:09,597 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 07:44:09,630 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_03-munge_racing.i[30176,30189] [2023-01-28 07:44:09,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 07:44:09,678 INFO L208 MainTranslator]: Completed translation [2023-01-28 07:44:09,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09 WrapperNode [2023-01-28 07:44:09,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 07:44:09,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 07:44:09,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 07:44:09,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 07:44:09,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,736 INFO L138 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 201 [2023-01-28 07:44:09,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 07:44:09,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 07:44:09,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 07:44:09,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 07:44:09,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,768 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,769 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 07:44:09,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 07:44:09,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 07:44:09,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 07:44:09,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (1/1) ... [2023-01-28 07:44:09,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 07:44:09,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:44:09,813 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 07:44:09,816 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 07:44:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 07:44:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 07:44:09,859 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 07:44:09,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 07:44:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 07:44:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 07:44:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 07:44:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 07:44:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 07:44:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 07:44:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 07:44:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 07:44:09,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 07:44:09,861 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 07:44:10,005 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 07:44:10,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 07:44:10,309 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 07:44:10,314 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 07:44:10,314 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-01-28 07:44:10,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:44:10 BoogieIcfgContainer [2023-01-28 07:44:10,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 07:44:10,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 07:44:10,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 07:44:10,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 07:44:10,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 07:44:09" (1/3) ... [2023-01-28 07:44:10,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d09b85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:44:10, skipping insertion in model container [2023-01-28 07:44:10,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 07:44:09" (2/3) ... [2023-01-28 07:44:10,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d09b85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 07:44:10, skipping insertion in model container [2023-01-28 07:44:10,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 07:44:10" (3/3) ... [2023-01-28 07:44:10,321 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2023-01-28 07:44:10,334 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 07:44:10,335 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 07:44:10,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 07:44:10,424 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 07:44:10,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:10,540 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-01-28 07:44:10,540 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:44:10,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:44:10,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:10,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:10,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:44:10,568 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:10,570 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:10,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:10,631 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-01-28 07:44:10,631 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:44:10,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:44:10,643 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-01-28 07:44:13,665 INFO L134 LiptonReduction]: Checked pairs total: 30997 [2023-01-28 07:44:13,666 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-01-28 07:44:13,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:44:13,690 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;@511ccd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:44:13,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 07:44:13,708 INFO L130 PetriNetUnfolder]: 7/43 cut-off events. [2023-01-28 07:44:13,708 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:44:13,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:44:13,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:44:13,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:44:13,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:44:13,713 INFO L85 PathProgramCache]: Analyzing trace with hash -760586635, now seen corresponding path program 1 times [2023-01-28 07:44:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:44:13,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837502880] [2023-01-28 07:44:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:13,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:44:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:13,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:44:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837502880] [2023-01-28 07:44:13,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837502880] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:44:13,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:44:13,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:44:13,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854539533] [2023-01-28 07:44:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:44:13,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:44:13,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:44:13,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:44:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:44:13,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 338 [2023-01-28 07:44:13,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 82 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:44:13,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:44:13,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 338 [2023-01-28 07:44:13,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:44:14,445 INFO L130 PetriNetUnfolder]: 4237/7338 cut-off events. [2023-01-28 07:44:14,445 INFO L131 PetriNetUnfolder]: For 192/192 co-relation queries the response was YES. [2023-01-28 07:44:14,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14218 conditions, 7338 events. 4237/7338 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 47586 event pairs, 1678 based on Foata normal form. 1002/6960 useless extension candidates. Maximal degree in co-relation 13072. Up to 4369 conditions per place. [2023-01-28 07:44:14,462 INFO L137 encePairwiseOnDemand]: 312/338 looper letters, 57 selfloop transitions, 3 changer transitions 27/96 dead transitions. [2023-01-28 07:44:14,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 96 transitions, 399 flow [2023-01-28 07:44:14,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 07:44:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 07:44:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-01-28 07:44:14,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571992110453649 [2023-01-28 07:44:14,475 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-01-28 07:44:14,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-01-28 07:44:14,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:44:14,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-01-28 07:44:14,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 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 07:44:14,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 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 07:44:14,487 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 0 states have call successors, (0), 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 07:44:14,488 INFO L175 Difference]: Start difference. First operand has 60 places, 82 transitions, 186 flow. Second operand 3 states and 580 transitions. [2023-01-28 07:44:14,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 96 transitions, 399 flow [2023-01-28 07:44:14,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 96 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 07:44:14,495 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 141 flow [2023-01-28 07:44:14,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2023-01-28 07:44:14,499 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2023-01-28 07:44:14,499 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 141 flow [2023-01-28 07:44:14,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 07:44:14,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:44:14,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:44:14,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 07:44:14,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-01-28 07:44:14,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:44:14,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2021334939, now seen corresponding path program 1 times [2023-01-28 07:44:14,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:44:14,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007181799] [2023-01-28 07:44:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:14,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:44:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:14,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:44:14,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007181799] [2023-01-28 07:44:14,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007181799] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 07:44:14,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102002041] [2023-01-28 07:44:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:14,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:44:14,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 07:44:14,607 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 07:44:14,634 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 07:44:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:14,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-28 07:44:14,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 07:44:14,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:14,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 07:44:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:14,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102002041] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 07:44:14,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 07:44:14,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-01-28 07:44:14,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635605846] [2023-01-28 07:44:14,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 07:44:14,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 07:44:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:44:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 07:44:14,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-28 07:44:14,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 338 [2023-01-28 07:44:14,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 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 07:44:14,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:44:14,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 338 [2023-01-28 07:44:14,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 07:44:14,839 INFO L130 PetriNetUnfolder]: 18/64 cut-off events. [2023-01-28 07:44:14,840 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:44:14,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 64 events. 18/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 119 event pairs, 6 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 123. Up to 38 conditions per place. [2023-01-28 07:44:14,840 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2023-01-28 07:44:14,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 113 flow [2023-01-28 07:44:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 07:44:14,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 07:44:14,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 653 transitions. [2023-01-28 07:44:14,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48298816568047337 [2023-01-28 07:44:14,843 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 653 transitions. [2023-01-28 07:44:14,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 653 transitions. [2023-01-28 07:44:14,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 07:44:14,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 653 transitions. [2023-01-28 07:44:14,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 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 07:44:14,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 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 07:44:14,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 338.0) internal successors, (1690), 5 states have internal predecessors, (1690), 0 states have call successors, (0), 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 07:44:14,848 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 141 flow. Second operand 4 states and 653 transitions. [2023-01-28 07:44:14,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 113 flow [2023-01-28 07:44:14,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 107 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 07:44:14,849 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-01-28 07:44:14,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=41, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-01-28 07:44:14,850 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, -34 predicate places. [2023-01-28 07:44:14,850 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-01-28 07:44:14,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 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 07:44:14,852 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 07:44:14,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-01-28 07:44:14,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-01-28 07:44:14,853 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-01-28 07:44:14,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 07:44:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 07:44:15,073 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-01-28 07:44:15,075 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-01-28 07:44:15,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:15,104 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-01-28 07:44:15,104 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:44:15,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:44:15,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:15,108 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:15,108 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:44:15,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:15,108 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:15,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 198 transitions, 418 flow [2023-01-28 07:44:15,179 INFO L130 PetriNetUnfolder]: 58/356 cut-off events. [2023-01-28 07:44:15,179 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 07:44:15,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 356 events. 58/356 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1472 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 07:44:15,187 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-01-28 07:44:17,344 INFO L134 LiptonReduction]: Checked pairs total: 28165 [2023-01-28 07:44:17,345 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-01-28 07:44:17,346 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 07:44:17,347 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;@511ccd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:44:17,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 07:44:17,348 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-01-28 07:44:17,348 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 07:44:17,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:44:17,349 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 07:44:17,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 07:44:17,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:44:17,349 INFO L85 PathProgramCache]: Analyzing trace with hash 2084626414, now seen corresponding path program 1 times [2023-01-28 07:44:17,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:44:17,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203754135] [2023-01-28 07:44:17,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:17,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:44:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:44:17,376 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 07:44:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 07:44:17,406 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 07:44:17,406 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 07:44:17,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 07:44:17,409 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 07:44:17,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 07:44:17,409 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 07:44:17,409 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-01-28 07:44:17,410 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 07:44:17,410 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 07:44:17,453 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 07:44:17,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 312 transitions, 672 flow [2023-01-28 07:44:17,584 INFO L130 PetriNetUnfolder]: 197/1044 cut-off events. [2023-01-28 07:44:17,584 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 07:44:17,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1044 events. 197/1044 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6019 event pairs, 1 based on Foata normal form. 0/852 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2023-01-28 07:44:17,593 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 312 transitions, 672 flow [2023-01-28 07:44:17,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 312 transitions, 672 flow [2023-01-28 07:44:17,601 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 07:44:17,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 312 transitions, 672 flow [2023-01-28 07:44:17,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 312 transitions, 672 flow [2023-01-28 07:44:17,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 312 transitions, 672 flow [2023-01-28 07:44:17,722 INFO L130 PetriNetUnfolder]: 197/1044 cut-off events. [2023-01-28 07:44:17,722 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 07:44:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1044 events. 197/1044 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6019 event pairs, 1 based on Foata normal form. 0/852 useless extension candidates. Maximal degree in co-relation 645. Up to 32 conditions per place. [2023-01-28 07:44:17,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 57240 [2023-01-28 07:44:20,724 INFO L134 LiptonReduction]: Checked pairs total: 136995 [2023-01-28 07:44:20,725 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-01-28 07:44:20,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 07:44:20,726 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;@511ccd31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 07:44:20,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-28 07:44:20,728 INFO L130 PetriNetUnfolder]: 7/40 cut-off events. [2023-01-28 07:44:20,729 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-28 07:44:20,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 07:44:20,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-28 07:44:20,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t1_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-01-28 07:44:20,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 07:44:20,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1477205327, now seen corresponding path program 1 times [2023-01-28 07:44:20,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 07:44:20,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138969991] [2023-01-28 07:44:20,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 07:44:20,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 07:44:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 07:44:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 07:44:20,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 07:44:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138969991] [2023-01-28 07:44:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138969991] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 07:44:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 07:44:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 07:44:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091224885] [2023-01-28 07:44:20,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 07:44:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 07:44:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 07:44:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 07:44:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 07:44:20,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 519 [2023-01-28 07:44:20,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 152 transitions, 352 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 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 07:44:20,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 07:44:20,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 519 [2023-01-28 07:44:20,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand