./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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 ../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.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 9f8eb81fe04afedf177636b6e0b2ff7ec90c549122dc143b3ac2872279b10356 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:55:16,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:55:16,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:55:16,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:55:16,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:55:16,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:55:16,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:55:16,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:55:16,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:55:16,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:55:16,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:55:16,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:55:16,855 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:55:16,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:55:16,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:55:16,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:55:16,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:55:16,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:55:16,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:55:16,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:55:16,867 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:55:16,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:55:16,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:55:16,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:55:16,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:55:16,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:55:16,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:55:16,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:55:16,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:55:16,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:55:16,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:55:16,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:55:16,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:55:16,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:55:16,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:55:16,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:55:16,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:55:16,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:55:16,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:55:16,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:55:16,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:55:16,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:55:16,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:55:16,912 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:55:16,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:55:16,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:55:16,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:55:16,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:55:16,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:55:16,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:55:16,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:55:16,915 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:55:16,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:55:16,916 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:55:16,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:55:16,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:55:16,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:55:16,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:55:16,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:55:16,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:55:16,917 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:55:16,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:55:16,918 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:55:16,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:55:16,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:55:16,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:55:16,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:55:16,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:55:16,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:55:16,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:55:16,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:55:16,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:55:16,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:55:16,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:55:16,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:55:16,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:55:16,920 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f8eb81fe04afedf177636b6e0b2ff7ec90c549122dc143b3ac2872279b10356 [2022-07-13 21:55:17,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:55:17,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:55:17,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:55:17,157 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:55:17,158 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:55:17,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2022-07-13 21:55:17,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0fc28a7/044494a530ef492a8289aac12866bf90/FLAGbc1ebc209 [2022-07-13 21:55:17,608 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:55:17,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i [2022-07-13 21:55:17,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0fc28a7/044494a530ef492a8289aac12866bf90/FLAGbc1ebc209 [2022-07-13 21:55:17,632 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0fc28a7/044494a530ef492a8289aac12866bf90 [2022-07-13 21:55:17,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:55:17,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:55:17,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:55:17,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:55:17,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:55:17,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:55:17" (1/1) ... [2022-07-13 21:55:17,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cf01a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:17, skipping insertion in model container [2022-07-13 21:55:17,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:55:17" (1/1) ... [2022-07-13 21:55:17,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:55:17,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:55:17,882 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2022-07-13 21:55:17,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:55:17,971 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:55:17,981 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_30-traces-oplus-vs-meet_true.i[1097,1110] [2022-07-13 21:55:18,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:55:18,031 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:55:18,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18 WrapperNode [2022-07-13 21:55:18,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:55:18,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:55:18,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:55:18,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:55:18,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,076 INFO L137 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2022-07-13 21:55:18,077 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:55:18,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:55:18,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:55:18,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:55:18,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:55:18,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:55:18,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:55:18,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:55:18,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (1/1) ... [2022-07-13 21:55:18,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:55:18,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:55:18,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:55:18,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:55:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 21:55:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:55:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-13 21:55:18,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:55:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:55:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-13 21:55:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-13 21:55:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:55:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:55:18,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:55:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:55:18,206 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:55:18,280 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:55:18,281 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:55:18,483 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:55:18,489 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:55:18,489 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 21:55:18,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:55:18 BoogieIcfgContainer [2022-07-13 21:55:18,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:55:18,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:55:18,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:55:18,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:55:18,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:55:17" (1/3) ... [2022-07-13 21:55:18,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6d381d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:55:18, skipping insertion in model container [2022-07-13 21:55:18,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:55:18" (2/3) ... [2022-07-13 21:55:18,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b6d381d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:55:18, skipping insertion in model container [2022-07-13 21:55:18,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:55:18" (3/3) ... [2022-07-13 21:55:18,513 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_30-traces-oplus-vs-meet_true.i [2022-07-13 21:55:18,518 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:55:18,525 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:55:18,525 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:55:18,525 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:55:18,624 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-13 21:55:18,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 84 transitions, 176 flow [2022-07-13 21:55:18,715 INFO L129 PetriNetUnfolder]: 2/83 cut-off events. [2022-07-13 21:55:18,715 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:55:18,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 83 events. 2/83 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2022-07-13 21:55:18,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 84 transitions, 176 flow [2022-07-13 21:55:18,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 68 transitions, 139 flow [2022-07-13 21:55:18,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:55:18,733 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a57bfbe, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@fd509a2 [2022-07-13 21:55:18,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 21:55:18,740 INFO L129 PetriNetUnfolder]: 1/37 cut-off events. [2022-07-13 21:55:18,740 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:55:18,740 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:55:18,741 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:55:18,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:55:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:55:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1177444784, now seen corresponding path program 1 times [2022-07-13 21:55:18,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:55:18,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968829540] [2022-07-13 21:55:18,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:55:18,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:55:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:55:18,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:55:18,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:55:18,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968829540] [2022-07-13 21:55:18,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968829540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:55:18,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:55:18,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:55:18,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356894347] [2022-07-13 21:55:18,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:55:18,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:55:18,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:55:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:55:19,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:55:19,021 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 84 [2022-07-13 21:55:19,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 68 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:55:19,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 84 [2022-07-13 21:55:19,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:55:19,096 INFO L129 PetriNetUnfolder]: 8/100 cut-off events. [2022-07-13 21:55:19,097 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-13 21:55:19,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 100 events. 8/100 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 185 event pairs, 2 based on Foata normal form. 3/103 useless extension candidates. Maximal degree in co-relation 89. Up to 10 conditions per place. [2022-07-13 21:55:19,098 INFO L132 encePairwiseOnDemand]: 74/84 looper letters, 7 selfloop transitions, 9 changer transitions 8/76 dead transitions. [2022-07-13 21:55:19,098 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 203 flow [2022-07-13 21:55:19,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 21:55:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 21:55:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 612 transitions. [2022-07-13 21:55:19,111 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-07-13 21:55:19,113 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 612 transitions. [2022-07-13 21:55:19,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 612 transitions. [2022-07-13 21:55:19,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:55:19,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 612 transitions. [2022-07-13 21:55:19,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,133 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,134 INFO L186 Difference]: Start difference. First operand has 71 places, 68 transitions, 139 flow. Second operand 9 states and 612 transitions. [2022-07-13 21:55:19,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 203 flow [2022-07-13 21:55:19,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 76 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:55:19,163 INFO L242 Difference]: Finished difference. Result has 79 places, 66 transitions, 166 flow [2022-07-13 21:55:19,165 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=166, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2022-07-13 21:55:19,167 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 8 predicate places. [2022-07-13 21:55:19,168 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 166 flow [2022-07-13 21:55:19,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,168 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:55:19,169 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:55:19,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:55:19,170 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:55:19,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:55:19,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1725075115, now seen corresponding path program 1 times [2022-07-13 21:55:19,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:55:19,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721450761] [2022-07-13 21:55:19,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:55:19,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:55:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:55:19,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:55:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:55:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721450761] [2022-07-13 21:55:19,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721450761] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:55:19,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:55:19,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:55:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816022282] [2022-07-13 21:55:19,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:55:19,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:55:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:55:19,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:55:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:55:19,272 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 84 [2022-07-13 21:55:19,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:55:19,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 84 [2022-07-13 21:55:19,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:55:19,299 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2022-07-13 21:55:19,299 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-13 21:55:19,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 71 events. 2/71 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 6/77 useless extension candidates. Maximal degree in co-relation 98. Up to 10 conditions per place. [2022-07-13 21:55:19,300 INFO L132 encePairwiseOnDemand]: 80/84 looper letters, 9 selfloop transitions, 3 changer transitions 3/60 dead transitions. [2022-07-13 21:55:19,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 176 flow [2022-07-13 21:55:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:55:19,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-13 21:55:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 203 transitions. [2022-07-13 21:55:19,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2022-07-13 21:55:19,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 203 transitions. [2022-07-13 21:55:19,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 203 transitions. [2022-07-13 21:55:19,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:55:19,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 203 transitions. [2022-07-13 21:55:19,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,304 INFO L186 Difference]: Start difference. First operand has 79 places, 66 transitions, 166 flow. Second operand 3 states and 203 transitions. [2022-07-13 21:55:19,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 176 flow [2022-07-13 21:55:19,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 60 transitions, 152 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-07-13 21:55:19,326 INFO L242 Difference]: Finished difference. Result has 65 places, 57 transitions, 124 flow [2022-07-13 21:55:19,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2022-07-13 21:55:19,327 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2022-07-13 21:55:19,327 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 124 flow [2022-07-13 21:55:19,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,328 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:55:19,328 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:55:19,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:55:19,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 21:55:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:55:19,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1040857087, now seen corresponding path program 1 times [2022-07-13 21:55:19,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:55:19,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665756997] [2022-07-13 21:55:19,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:55:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:55:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:55:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:55:19,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:55:19,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665756997] [2022-07-13 21:55:19,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665756997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:55:19,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:55:19,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 21:55:19,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060577870] [2022-07-13 21:55:19,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:55:19,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:55:19,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:55:19,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:55:19,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:55:19,508 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 84 [2022-07-13 21:55:19,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 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) [2022-07-13 21:55:19,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:55:19,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 84 [2022-07-13 21:55:19,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:55:19,584 INFO L129 PetriNetUnfolder]: 1/57 cut-off events. [2022-07-13 21:55:19,584 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-13 21:55:19,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 57 events. 1/57 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 3/60 useless extension candidates. Maximal degree in co-relation 33. Up to 8 conditions per place. [2022-07-13 21:55:19,586 INFO L132 encePairwiseOnDemand]: 80/84 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2022-07-13 21:55:19,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 155 flow [2022-07-13 21:55:19,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:55:19,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-13 21:55:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 301 transitions. [2022-07-13 21:55:19,588 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7166666666666667 [2022-07-13 21:55:19,588 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 301 transitions. [2022-07-13 21:55:19,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 301 transitions. [2022-07-13 21:55:19,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:55:19,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 301 transitions. [2022-07-13 21:55:19,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,591 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:55:19,591 INFO L186 Difference]: Start difference. First operand has 65 places, 57 transitions, 124 flow. Second operand 5 states and 301 transitions. [2022-07-13 21:55:19,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 155 flow [2022-07-13 21:55:19,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 53 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:55:19,593 INFO L242 Difference]: Finished difference. Result has 61 places, 0 transitions, 0 flow [2022-07-13 21:55:19,593 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=61, PETRI_TRANSITIONS=0} [2022-07-13 21:55:19,594 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2022-07-13 21:55:19,595 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 0 transitions, 0 flow [2022-07-13 21:55:19,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.0) internal successors, (354), 6 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) [2022-07-13 21:55:19,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-13 21:55:19,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-07-13 21:55:19,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-13 21:55:19,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:55:19,605 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-13 21:55:19,608 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 21:55:19,608 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:55:19,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:55:19 BasicIcfg [2022-07-13 21:55:19,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:55:19,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:55:19,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:55:19,617 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:55:19,617 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:55:18" (3/4) ... [2022-07-13 21:55:19,619 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 21:55:19,623 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-13 21:55:19,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-07-13 21:55:19,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 21:55:19,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 21:55:19,627 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 21:55:19,659 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:55:19,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:55:19,662 INFO L158 Benchmark]: Toolchain (without parser) took 2023.29ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 66.2MB in the beginning and 67.3MB in the end (delta: -1.1MB). Peak memory consumption was 18.5MB. Max. memory is 16.1GB. [2022-07-13 21:55:19,662 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:55:19,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.39ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 66.0MB in the beginning and 85.1MB in the end (delta: -19.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-07-13 21:55:19,663 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.89ms. Allocated memory is still 119.5MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:55:19,663 INFO L158 Benchmark]: Boogie Preprocessor took 13.54ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:55:19,663 INFO L158 Benchmark]: RCFGBuilder took 399.86ms. Allocated memory is still 119.5MB. Free memory was 81.7MB in the beginning and 69.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-13 21:55:19,663 INFO L158 Benchmark]: TraceAbstraction took 1113.76ms. Allocated memory is still 119.5MB. Free memory was 69.4MB in the beginning and 70.2MB in the end (delta: -827.3kB). Peak memory consumption was 233.4kB. Max. memory is 16.1GB. [2022-07-13 21:55:19,664 INFO L158 Benchmark]: Witness Printer took 43.53ms. Allocated memory is still 119.5MB. Free memory was 70.2MB in the beginning and 67.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:55:19,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 54.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.39ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 66.0MB in the beginning and 85.1MB in the end (delta: -19.1MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.89ms. Allocated memory is still 119.5MB. Free memory was 85.1MB in the beginning and 83.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.54ms. Allocated memory is still 119.5MB. Free memory was 83.0MB in the beginning and 82.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 399.86ms. Allocated memory is still 119.5MB. Free memory was 81.7MB in the beginning and 69.7MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1113.76ms. Allocated memory is still 119.5MB. Free memory was 69.4MB in the beginning and 70.2MB in the end (delta: -827.3kB). Peak memory consumption was 233.4kB. Max. memory is 16.1GB. * Witness Printer took 43.53ms. Allocated memory is still 119.5MB. Free memory was 70.2MB in the beginning and 67.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 3 procedures, 99 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: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 82 IncrementalHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 20 mSDtfsCounter, 82 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=1, InterpolantAutomatonStates: 17, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 147 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-13 21:55:19,710 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