./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/bigshot_s2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/bigshot_s2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:08:00,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:08:00,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:08:00,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:08:00,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:08:00,686 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:08:00,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:08:00,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:08:00,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:08:00,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:08:00,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:08:00,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:08:00,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:08:00,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:08:00,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:08:00,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:08:00,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:08:00,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:08:00,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:08:00,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:08:00,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:08:00,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:08:00,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:08:00,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:08:00,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:08:00,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:08:00,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:08:00,708 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:08:00,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:08:00,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:08:00,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:08:00,710 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:08:00,710 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:08:00,711 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:08:00,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:08:00,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:08:00,712 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:08:00,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:08:00,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:08:00,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:08:00,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:08:00,721 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:08:00,744 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:08:00,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:08:00,749 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:08:00,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:08:00,749 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:08:00,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:08:00,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:08:00,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:08:00,751 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:08:00,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:08:00,752 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:08:00,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:08:00,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:08:00,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:08:00,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:08:00,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:08:00,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:08:00,753 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:08:00,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:08:00,753 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:08:00,753 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:08:00,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:08:00,753 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:08:00,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:08:00,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:08:00,754 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:08:00,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:08:00,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:08:00,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:08:00,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:08:00,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:08:00,755 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:08:00,755 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:08:00,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:08:00,755 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:08:00,755 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:08:01,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:08:01,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:08:01,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:08:01,090 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:08:01,091 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:08:01,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/bigshot_s2.i [2023-08-30 16:08:02,069 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:08:02,267 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:08:02,267 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i [2023-08-30 16:08:02,283 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30cdefe5d/6d86f74739b0430cbe6fbee069a2d91c/FLAG783ea359c [2023-08-30 16:08:02,295 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30cdefe5d/6d86f74739b0430cbe6fbee069a2d91c [2023-08-30 16:08:02,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:08:02,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:08:02,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:08:02,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:08:02,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:08:02,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10759a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02, skipping insertion in model container [2023-08-30 16:08:02,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:08:02,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:08:02,750 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-08-30 16:08:02,764 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:08:02,772 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:08:02,804 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/bigshot_s2.i[55203,55216] [2023-08-30 16:08:02,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:08:02,876 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:08:02,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02 WrapperNode [2023-08-30 16:08:02,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:08:02,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:08:02,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:08:02,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:08:02,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,933 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-08-30 16:08:02,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:08:02,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:08:02,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:08:02,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:08:02,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,952 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:08:02,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:08:02,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:08:02,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:08:02,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (1/1) ... [2023-08-30 16:08:02,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:08:02,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:08:03,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 16:08:03,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 16:08:03,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:08:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:08:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-08-30 16:08:03,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 16:08:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 16:08:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 16:08:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 16:08:03,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 16:08:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:08:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 16:08:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:08:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:08:03,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:08:03,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:08:03,123 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:08:03,214 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:08:03,215 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:08:03,390 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:08:03,395 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:08:03,395 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-30 16:08:03,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:08:03 BoogieIcfgContainer [2023-08-30 16:08:03,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:08:03,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:08:03,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:08:03,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:08:03,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:08:02" (1/3) ... [2023-08-30 16:08:03,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6320c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:08:03, skipping insertion in model container [2023-08-30 16:08:03,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:08:02" (2/3) ... [2023-08-30 16:08:03,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6320c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:08:03, skipping insertion in model container [2023-08-30 16:08:03,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:08:03" (3/3) ... [2023-08-30 16:08:03,402 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2023-08-30 16:08:03,408 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:08:03,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:08:03,415 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:08:03,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:08:03,483 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 16:08:03,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 82 transitions, 180 flow [2023-08-30 16:08:03,581 INFO L130 PetriNetUnfolder]: 4/80 cut-off events. [2023-08-30 16:08:03,581 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:08:03,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 4/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-08-30 16:08:03,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 82 transitions, 180 flow [2023-08-30 16:08:03,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 69 transitions, 150 flow [2023-08-30 16:08:03,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:08:03,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 69 transitions, 150 flow [2023-08-30 16:08:03,607 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 69 transitions, 150 flow [2023-08-30 16:08:03,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 69 transitions, 150 flow [2023-08-30 16:08:03,629 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2023-08-30 16:08:03,629 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:08:03,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 69 events. 3/69 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-30 16:08:03,630 INFO L119 LiptonReduction]: Number of co-enabled transitions 144 [2023-08-30 16:08:05,843 INFO L134 LiptonReduction]: Checked pairs total: 177 [2023-08-30 16:08:05,843 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-30 16:08:05,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:08:05,868 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e80cdfc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:08:05,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-30 16:08:05,876 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-08-30 16:08:05,877 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:08:05,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:05,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:05,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 16:08:05,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:05,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1440544796, now seen corresponding path program 1 times [2023-08-30 16:08:05,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:05,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582507690] [2023-08-30 16:08:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:06,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:06,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:06,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582507690] [2023-08-30 16:08:06,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582507690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:08:06,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:08:06,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:08:06,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859587412] [2023-08-30 16:08:06,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:08:06,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:08:06,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:06,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:08:06,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:08:06,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 142 [2023-08-30 16:08:06,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:06,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:06,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 142 [2023-08-30 16:08:06,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:06,384 INFO L130 PetriNetUnfolder]: 5/20 cut-off events. [2023-08-30 16:08:06,384 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 16:08:06,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 20 events. 5/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 11 event pairs, 2 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 29. Up to 17 conditions per place. [2023-08-30 16:08:06,385 INFO L137 encePairwiseOnDemand]: 140/142 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-30 16:08:06,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 68 flow [2023-08-30 16:08:06,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:08:06,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:08:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-08-30 16:08:06,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422535211267606 [2023-08-30 16:08:06,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-08-30 16:08:06,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-08-30 16:08:06,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:06,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-08-30 16:08:06,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:06,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:06,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:06,404 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 40 flow. Second operand 3 states and 231 transitions. [2023-08-30 16:08:06,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 68 flow [2023-08-30 16:08:06,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 14 transitions, 60 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 16:08:06,407 INFO L231 Difference]: Finished difference. Result has 17 places, 13 transitions, 32 flow [2023-08-30 16:08:06,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=32, PETRI_PLACES=17, PETRI_TRANSITIONS=13} [2023-08-30 16:08:06,410 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, -2 predicate places. [2023-08-30 16:08:06,411 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 13 transitions, 32 flow [2023-08-30 16:08:06,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:06,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:06,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:06,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:08:06,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 16:08:06,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1703930448, now seen corresponding path program 1 times [2023-08-30 16:08:06,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:06,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880682685] [2023-08-30 16:08:06,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880682685] [2023-08-30 16:08:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880682685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:08:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:08:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 16:08:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112039407] [2023-08-30 16:08:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:08:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 16:08:06,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 16:08:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 16:08:06,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 142 [2023-08-30 16:08:06,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 13 transitions, 32 flow. Second operand has 8 states, 8 states have (on average 61.5) internal successors, (492), 8 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:06,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:06,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 142 [2023-08-30 16:08:06,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:07,024 INFO L130 PetriNetUnfolder]: 9/28 cut-off events. [2023-08-30 16:08:07,025 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 16:08:07,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 28 events. 9/28 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 1 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 47. Up to 13 conditions per place. [2023-08-30 16:08:07,025 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 14 selfloop transitions, 5 changer transitions 0/19 dead transitions. [2023-08-30 16:08:07,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 82 flow [2023-08-30 16:08:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:08:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:08:07,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 320 transitions. [2023-08-30 16:08:07,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507042253521127 [2023-08-30 16:08:07,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 320 transitions. [2023-08-30 16:08:07,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 320 transitions. [2023-08-30 16:08:07,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:07,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 320 transitions. [2023-08-30 16:08:07,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 64.0) internal successors, (320), 5 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:07,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:07,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:07,031 INFO L175 Difference]: Start difference. First operand has 17 places, 13 transitions, 32 flow. Second operand 5 states and 320 transitions. [2023-08-30 16:08:07,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 82 flow [2023-08-30 16:08:07,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:08:07,032 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 58 flow [2023-08-30 16:08:07,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-30 16:08:07,033 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-30 16:08:07,033 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 58 flow [2023-08-30 16:08:07,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 61.5) internal successors, (492), 8 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:07,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:07,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:07,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:08:07,034 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 16:08:07,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1951074546, now seen corresponding path program 1 times [2023-08-30 16:08:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529037842] [2023-08-30 16:08:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:07,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:07,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529037842] [2023-08-30 16:08:07,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529037842] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:08:07,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703364568] [2023-08-30 16:08:07,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:07,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:08:07,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:08:07,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 16:08:07,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 16:08:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-30 16:08:07,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:08:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:07,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:07,497 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-08-30 16:08:07,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-08-30 16:08:07,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:07,621 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 16:08:07,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 16:08:07,672 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:08:07,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:07,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:08:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703364568] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:08:07,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:08:07,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 17 [2023-08-30 16:08:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321826210] [2023-08-30 16:08:07,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:08:07,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 16:08:07,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:07,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 16:08:07,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2023-08-30 16:08:08,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 142 [2023-08-30 16:08:08,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 58 flow. Second operand has 18 states, 18 states have (on average 60.05555555555556) internal successors, (1081), 18 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:08,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:08,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 142 [2023-08-30 16:08:08,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:09,039 INFO L130 PetriNetUnfolder]: 14/45 cut-off events. [2023-08-30 16:08:09,039 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 16:08:09,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 45 events. 14/45 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 1 based on Foata normal form. 2/47 useless extension candidates. Maximal degree in co-relation 113. Up to 14 conditions per place. [2023-08-30 16:08:09,040 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 17 selfloop transitions, 8 changer transitions 5/30 dead transitions. [2023-08-30 16:08:09,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 163 flow [2023-08-30 16:08:09,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:08:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:08:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 555 transitions. [2023-08-30 16:08:09,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43427230046948356 [2023-08-30 16:08:09,041 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 555 transitions. [2023-08-30 16:08:09,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 555 transitions. [2023-08-30 16:08:09,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:09,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 555 transitions. [2023-08-30 16:08:09,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.666666666666664) internal successors, (555), 9 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:09,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:09,049 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:09,049 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 58 flow. Second operand 9 states and 555 transitions. [2023-08-30 16:08:09,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 163 flow [2023-08-30 16:08:09,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 157 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 16:08:09,051 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 98 flow [2023-08-30 16:08:09,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=98, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-08-30 16:08:09,051 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 14 predicate places. [2023-08-30 16:08:09,052 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 98 flow [2023-08-30 16:08:09,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 60.05555555555556) internal successors, (1081), 18 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:09,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:09,052 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:09,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 16:08:09,257 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 [2023-08-30 16:08:09,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 16:08:09,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:09,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1171585968, now seen corresponding path program 2 times [2023-08-30 16:08:09,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:09,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046596775] [2023-08-30 16:08:09,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:09,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:09,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:09,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046596775] [2023-08-30 16:08:09,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046596775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:08:09,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634098092] [2023-08-30 16:08:09,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 16:08:09,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:08:09,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:08:09,662 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 16:08:09,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 16:08:09,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 16:08:09,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 16:08:09,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-30 16:08:09,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:08:09,782 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2023-08-30 16:08:09,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2023-08-30 16:08:09,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:09,878 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 16:08:09,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2023-08-30 16:08:09,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:09,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:09,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:10,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:10,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:10,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:08:10,092 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-08-30 16:08:10,161 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 3 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-08-30 16:08:10,166 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_112 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_112) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-08-30 16:08:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2023-08-30 16:08:10,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634098092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:08:10,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:08:10,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-08-30 16:08:10,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013458294] [2023-08-30 16:08:10,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:08:10,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 16:08:10,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 16:08:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=488, Unknown=6, NotChecked=138, Total=702 [2023-08-30 16:08:10,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-08-30 16:08:10,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 98 flow. Second operand has 27 states, 27 states have (on average 37.629629629629626) internal successors, (1016), 27 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:10,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:10,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-08-30 16:08:10,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:10,872 INFO L130 PetriNetUnfolder]: 14/44 cut-off events. [2023-08-30 16:08:10,872 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 16:08:10,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 44 events. 14/44 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 50 event pairs, 1 based on Foata normal form. 2/46 useless extension candidates. Maximal degree in co-relation 153. Up to 13 conditions per place. [2023-08-30 16:08:10,873 INFO L137 encePairwiseOnDemand]: 138/142 looper letters, 18 selfloop transitions, 9 changer transitions 2/29 dead transitions. [2023-08-30 16:08:10,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 29 transitions, 190 flow [2023-08-30 16:08:10,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 16:08:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 16:08:10,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 354 transitions. [2023-08-30 16:08:10,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27699530516431925 [2023-08-30 16:08:10,874 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 354 transitions. [2023-08-30 16:08:10,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 354 transitions. [2023-08-30 16:08:10,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:10,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 354 transitions. [2023-08-30 16:08:10,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 39.333333333333336) internal successors, (354), 9 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:10,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:10,877 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 142.0) internal successors, (1420), 10 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:10,877 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 98 flow. Second operand 9 states and 354 transitions. [2023-08-30 16:08:10,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 29 transitions, 190 flow [2023-08-30 16:08:10,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 166 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 16:08:10,878 INFO L231 Difference]: Finished difference. Result has 36 places, 20 transitions, 106 flow [2023-08-30 16:08:10,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=20} [2023-08-30 16:08:10,879 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 17 predicate places. [2023-08-30 16:08:10,879 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 20 transitions, 106 flow [2023-08-30 16:08:10,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 37.629629629629626) internal successors, (1016), 27 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:10,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:10,880 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:10,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 16:08:11,092 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 [2023-08-30 16:08:11,093 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 16:08:11,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:11,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1959732808, now seen corresponding path program 3 times [2023-08-30 16:08:11,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:11,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999448496] [2023-08-30 16:08:11,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:11,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:11,482 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:11,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:11,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999448496] [2023-08-30 16:08:11,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999448496] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:08:11,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470073496] [2023-08-30 16:08:11,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 16:08:11,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:08:11,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:08:11,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 16:08:11,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 16:08:11,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 16:08:11,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 16:08:11,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-30 16:08:11,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:08:11,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:11,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:11,649 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2023-08-30 16:08:11,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 39 treesize of output 61 [2023-08-30 16:08:11,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:11,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:11,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:11,800 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-08-30 16:08:11,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:11,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:11,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:11,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:11,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:12,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:12,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:12,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:08:12,122 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 1)))) is different from false [2023-08-30 16:08:12,197 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset| 4)))) is different from false [2023-08-30 16:08:12,200 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_168 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_168) |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 5 |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_src#1.offset|)))) is different from false [2023-08-30 16:08:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2023-08-30 16:08:12,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470073496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:08:12,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:08:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2023-08-30 16:08:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999546261] [2023-08-30 16:08:12,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:08:12,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 16:08:12,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:08:12,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 16:08:12,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=625, Unknown=13, NotChecked=156, Total=870 [2023-08-30 16:08:12,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-08-30 16:08:12,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 20 transitions, 106 flow. Second operand has 30 states, 30 states have (on average 37.56666666666667) internal successors, (1127), 30 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:12,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:08:12,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-08-30 16:08:12,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:08:14,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:08:16,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 16:08:17,364 INFO L130 PetriNetUnfolder]: 16/55 cut-off events. [2023-08-30 16:08:17,365 INFO L131 PetriNetUnfolder]: For 88/88 co-relation queries the response was YES. [2023-08-30 16:08:17,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 55 events. 16/55 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 89 event pairs, 1 based on Foata normal form. 3/58 useless extension candidates. Maximal degree in co-relation 192. Up to 17 conditions per place. [2023-08-30 16:08:17,365 INFO L137 encePairwiseOnDemand]: 137/142 looper letters, 18 selfloop transitions, 17 changer transitions 4/39 dead transitions. [2023-08-30 16:08:17,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 280 flow [2023-08-30 16:08:17,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 16:08:17,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 16:08:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 581 transitions. [2023-08-30 16:08:17,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2727699530516432 [2023-08-30 16:08:17,368 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 581 transitions. [2023-08-30 16:08:17,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 581 transitions. [2023-08-30 16:08:17,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:08:17,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 581 transitions. [2023-08-30 16:08:17,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 38.733333333333334) internal successors, (581), 15 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:17,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 142.0) internal successors, (2272), 16 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:17,371 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 142.0) internal successors, (2272), 16 states have internal predecessors, (2272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:17,371 INFO L175 Difference]: Start difference. First operand has 36 places, 20 transitions, 106 flow. Second operand 15 states and 581 transitions. [2023-08-30 16:08:17,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 280 flow [2023-08-30 16:08:17,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 252 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-30 16:08:17,373 INFO L231 Difference]: Finished difference. Result has 44 places, 28 transitions, 173 flow [2023-08-30 16:08:17,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=173, PETRI_PLACES=44, PETRI_TRANSITIONS=28} [2023-08-30 16:08:17,374 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 25 predicate places. [2023-08-30 16:08:17,374 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 28 transitions, 173 flow [2023-08-30 16:08:17,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 37.56666666666667) internal successors, (1127), 30 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:08:17,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:08:17,375 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:08:17,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 16:08:17,579 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 [2023-08-30 16:08:17,580 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-30 16:08:17,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:08:17,580 INFO L85 PathProgramCache]: Analyzing trace with hash -622481072, now seen corresponding path program 4 times [2023-08-30 16:08:17,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:08:17,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059284248] [2023-08-30 16:08:17,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:08:17,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:08:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:08:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:08:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059284248] [2023-08-30 16:08:18,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059284248] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 16:08:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242427891] [2023-08-30 16:08:18,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 16:08:18,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 16:08:18,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:08:18,049 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 16:08:18,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 16:08:18,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 16:08:18,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 16:08:18,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-30 16:08:18,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 16:08:18,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:18,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:18,165 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-08-30 16:08:18,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-08-30 16:08:18,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-30 16:08:18,279 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 16:08:18,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2023-08-30 16:08:18,319 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:08:18,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:18,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:18,368 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:08:18,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:18,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:18,413 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:08:18,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:18,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:18,456 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:08:18,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:18,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:18,498 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:08:18,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:18,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 16:08:18,541 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-30 16:08:18,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-30 16:08:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:08:18,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 16:09:13,245 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_236 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| Int) (v_ArrVal_234 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| Int) (v_ArrVal_231 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_69| Int) (v_ArrVal_229 Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| Int) (|v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| Int) (v_ArrVal_227 Int) (v_ArrVal_226 Int)) (or (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| 1)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_226) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_227) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_229) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_231) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_234) (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_69| |c_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_236)) c_~v~0.base) c_~v~0.offset)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_69| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_70| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_71| 1)) (< |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_72| (+ |v_thread2Thread1of1ForFork0_#Ultimate.C_strcpy_#t~offset13#1_73| 1)))) is different from false [2023-08-30 16:09:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 5 refuted. 7 times theorem prover too weak. 0 trivial. 6 not checked. [2023-08-30 16:09:38,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242427891] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 16:09:38,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 16:09:38,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 32 [2023-08-30 16:09:38,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043313247] [2023-08-30 16:09:38,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 16:09:38,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-30 16:09:38,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:09:38,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-30 16:09:38,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=808, Unknown=36, NotChecked=60, Total=1056 [2023-08-30 16:09:38,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 142 [2023-08-30 16:09:38,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 28 transitions, 173 flow. Second operand has 33 states, 33 states have (on average 37.54545454545455) internal successors, (1239), 33 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:09:38,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:09:38,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 142 [2023-08-30 16:09:38,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:10:32,549 WARN L222 SmtUtils]: Spent 42.04s on a formula simplification. DAG size of input: 86 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 16:10:38,852 INFO L130 PetriNetUnfolder]: 12/46 cut-off events. [2023-08-30 16:10:38,852 INFO L131 PetriNetUnfolder]: For 63/63 co-relation queries the response was YES. [2023-08-30 16:10:38,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 46 events. 12/46 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 1 based on Foata normal form. 4/50 useless extension candidates. Maximal degree in co-relation 161. Up to 13 conditions per place. [2023-08-30 16:10:38,852 INFO L137 encePairwiseOnDemand]: 136/142 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-30 16:10:38,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 33 transitions, 239 flow [2023-08-30 16:10:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 16:10:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 16:10:38,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 462 transitions. [2023-08-30 16:10:38,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2711267605633803 [2023-08-30 16:10:38,854 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 462 transitions. [2023-08-30 16:10:38,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 462 transitions. [2023-08-30 16:10:38,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:10:38,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 462 transitions. [2023-08-30 16:10:38,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 38.5) internal successors, (462), 12 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:10:38,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:10:38,857 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 142.0) internal successors, (1846), 13 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:10:38,857 INFO L175 Difference]: Start difference. First operand has 44 places, 28 transitions, 173 flow. Second operand 12 states and 462 transitions. [2023-08-30 16:10:38,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 33 transitions, 239 flow [2023-08-30 16:10:38,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 33 transitions, 164 flow, removed 15 selfloop flow, removed 14 redundant places. [2023-08-30 16:10:38,858 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-30 16:10:38,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-30 16:10:38,859 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 21 predicate places. [2023-08-30 16:10:38,859 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-30 16:10:38,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 37.54545454545455) internal successors, (1239), 33 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 16:10:38,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-30 16:10:38,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-30 16:10:38,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-30 16:10:38,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 16:10:39,066 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 [2023-08-30 16:10:39,067 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-08-30 16:10:39,069 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:10:39,069 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:10:39,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:10:39 BasicIcfg [2023-08-30 16:10:39,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:10:39,071 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:10:39,071 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:10:39,072 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:10:39,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:08:03" (3/4) ... [2023-08-30 16:10:39,074 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:10:39,077 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 16:10:39,077 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 16:10:39,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 16:10:39,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-08-30 16:10:39,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 16:10:39,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:10:39,080 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:10:39,113 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:10:39,113 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:10:39,114 INFO L158 Benchmark]: Toolchain (without parser) took 156815.45ms. Allocated memory was 58.7MB in the beginning and 209.7MB in the end (delta: 151.0MB). Free memory was 31.3MB in the beginning and 140.0MB in the end (delta: -108.8MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2023-08-30 16:10:39,114 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 36.0MB in the beginning and 36.0MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:10:39,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.84ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 31.0MB in the beginning and 47.3MB in the end (delta: -16.3MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2023-08-30 16:10:39,114 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.95ms. Allocated memory is still 75.5MB. Free memory was 47.3MB in the beginning and 44.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:10:39,115 INFO L158 Benchmark]: Boogie Preprocessor took 44.24ms. Allocated memory is still 75.5MB. Free memory was 44.8MB in the beginning and 43.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:10:39,115 INFO L158 Benchmark]: RCFGBuilder took 417.70ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 48.5MB in the end (delta: -5.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2023-08-30 16:10:39,115 INFO L158 Benchmark]: TraceAbstraction took 155673.06ms. Allocated memory was 75.5MB in the beginning and 209.7MB in the end (delta: 134.2MB). Free memory was 47.8MB in the beginning and 142.1MB in the end (delta: -94.4MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. [2023-08-30 16:10:39,115 INFO L158 Benchmark]: Witness Printer took 42.07ms. Allocated memory is still 209.7MB. Free memory was 142.1MB in the beginning and 140.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:10:39,116 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 58.7MB. Free memory was 36.0MB in the beginning and 36.0MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.84ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 31.0MB in the beginning and 47.3MB in the end (delta: -16.3MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.95ms. Allocated memory is still 75.5MB. Free memory was 47.3MB in the beginning and 44.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.24ms. Allocated memory is still 75.5MB. Free memory was 44.8MB in the beginning and 43.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.70ms. Allocated memory is still 75.5MB. Free memory was 43.3MB in the beginning and 48.5MB in the end (delta: -5.2MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. * TraceAbstraction took 155673.06ms. Allocated memory was 75.5MB in the beginning and 209.7MB in the end (delta: 134.2MB). Free memory was 47.8MB in the beginning and 142.1MB in the end (delta: -94.4MB). Peak memory consumption was 39.5MB. Max. memory is 16.1GB. * Witness Printer took 42.07ms. Allocated memory is still 209.7MB. Free memory was 142.1MB in the beginning and 140.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 73 PlacesBefore, 19 PlacesAfterwards, 69 TransitionsBefore, 14 TransitionsAfterwards, 144 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 177 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 150, independent: 140, independent conditional: 0, independent unconditional: 140, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 89, independent: 84, independent conditional: 0, independent unconditional: 84, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 150, independent: 56, independent conditional: 0, independent unconditional: 56, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 89, unknown conditional: 0, unknown unconditional: 89] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 104 locations, 3 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: 155.6s, OverallIterations: 6, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 67.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 52 mSolverCounterUnknown, 928 SdHoareTripleChecker+Valid, 7.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 827 mSDsluCounter, 953 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 312 IncrementalHoareTripleChecker+Unchecked, 953 mSDsCounter, 185 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3582 IncrementalHoareTripleChecker+Invalid, 4131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 185 mSolverCounterUnsat, 0 mSDtfsCounter, 3582 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 70 SyntacticMatches, 12 SemanticMatches, 143 ConstructedPredicates, 7 IntricatePredicates, 1 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 140.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=5, InterpolantAutomatonStates: 53, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 83.9s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 201 ConstructedInterpolants, 43 QuantifiedInterpolants, 3617 SizeOfPredicates, 35 NumberOfNonLiveVariables, 840 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 13/141 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:10:39,185 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE