./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_34-traces-minepp-L-needs-to-be-um_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 b9cb80ce7b0c0db24d48a98e6e8d1fa81dc0ba8a1f2c5d148b0b0229d5ab18a1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:17:09,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:17:09,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:17:09,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:17:09,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:17:09,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:17:09,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:17:09,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:17:09,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:17:09,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:17:09,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:17:09,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:17:09,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:17:09,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:17:09,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:17:09,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:17:09,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:17:09,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:17:09,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:17:09,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:17:09,908 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:17:09,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:17:09,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:17:09,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:17:09,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:17:09,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:17:09,918 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:17:09,918 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:17:09,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:17:09,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:17:09,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:17:09,920 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:17:09,921 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:17:09,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:17:09,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:17:09,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:17:09,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:17:09,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:17:09,924 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:17:09,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:17:09,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:17:09,925 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:17:09,926 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:17:09,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:17:09,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:17:09,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:17:09,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:17:09,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:17:09,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:17:09,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:17:09,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:17:09,942 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:17:09,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:17:09,942 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:17:09,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:17:09,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:17:09,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:17:09,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:17:09,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:17:09,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:17:09,944 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9cb80ce7b0c0db24d48a98e6e8d1fa81dc0ba8a1f2c5d148b0b0229d5ab18a1 [2022-07-19 21:17:10,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:17:10,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:17:10,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:17:10,130 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:17:10,131 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:17:10,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-07-19 21:17:10,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0343ab82/ec9c988971d14d01a96b95afb80f8ad7/FLAG72d54b6d6 [2022-07-19 21:17:10,552 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:17:10,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-07-19 21:17:10,564 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0343ab82/ec9c988971d14d01a96b95afb80f8ad7/FLAG72d54b6d6 [2022-07-19 21:17:10,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0343ab82/ec9c988971d14d01a96b95afb80f8ad7 [2022-07-19 21:17:10,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:17:10,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:17:10,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:17:10,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:17:10,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:17:10,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:17:10" (1/1) ... [2022-07-19 21:17:10,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0ec29f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:10, skipping insertion in model container [2022-07-19 21:17:10,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:17:10" (1/1) ... [2022-07-19 21:17:10,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:17:10,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:17:11,128 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_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2022-07-19 21:17:11,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:17:11,261 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:17:11,268 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_34-traces-minepp-L-needs-to-be-um_true.i[1107,1120] [2022-07-19 21:17:11,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:17:11,324 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:17:11,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11 WrapperNode [2022-07-19 21:17:11,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:17:11,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:17:11,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:17:11,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:17:11,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,355 INFO L137 Inliner]: procedures = 163, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2022-07-19 21:17:11,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:17:11,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:17:11,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:17:11,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:17:11,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,369 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:17:11,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:17:11,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:17:11,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:17:11,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (1/1) ... [2022-07-19 21:17:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:17:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:17:11,404 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) [2022-07-19 21:17:11,418 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 [2022-07-19 21:17:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:17:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:17:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:17:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:17:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-19 21:17:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-19 21:17:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:17:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:17:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:17:11,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:17:11,429 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:17:11,541 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:17:11,542 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:17:11,673 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:17:11,678 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:17:11,679 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:17:11,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:11 BoogieIcfgContainer [2022-07-19 21:17:11,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:17:11,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:17:11,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:17:11,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:17:11,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:17:10" (1/3) ... [2022-07-19 21:17:11,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1bc2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:17:11, skipping insertion in model container [2022-07-19 21:17:11,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:17:11" (2/3) ... [2022-07-19 21:17:11,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a1bc2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:17:11, skipping insertion in model container [2022-07-19 21:17:11,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:11" (3/3) ... [2022-07-19 21:17:11,685 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_34-traces-minepp-L-needs-to-be-um_true.i [2022-07-19 21:17:11,689 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:17:11,695 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:17:11,695 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:17:11,695 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:17:11,720 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-19 21:17:11,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 90 transitions, 185 flow [2022-07-19 21:17:11,770 INFO L129 PetriNetUnfolder]: 2/89 cut-off events. [2022-07-19 21:17:11,770 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:17:11,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-07-19 21:17:11,776 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 90 transitions, 185 flow [2022-07-19 21:17:11,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 161 flow [2022-07-19 21:17:11,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:17:11,790 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@4f10c0ba, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@866ddd3 [2022-07-19 21:17:11,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-19 21:17:11,812 INFO L129 PetriNetUnfolder]: 1/77 cut-off events. [2022-07-19 21:17:11,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:17:11,812 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:11,812 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] [2022-07-19 21:17:11,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash 347770763, now seen corresponding path program 1 times [2022-07-19 21:17:11,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794279510] [2022-07-19 21:17:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:11,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:12,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:12,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:12,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794279510] [2022-07-19 21:17:12,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794279510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:12,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:12,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:17:12,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914784716] [2022-07-19 21:17:12,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:12,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:17:12,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:12,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:17:12,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:17:12,125 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 90 [2022-07-19 21:17:12,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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) [2022-07-19 21:17:12,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:12,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 90 [2022-07-19 21:17:12,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:12,202 INFO L129 PetriNetUnfolder]: 9/126 cut-off events. [2022-07-19 21:17:12,202 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:17:12,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 126 events. 9/126 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 241 event pairs, 0 based on Foata normal form. 3/127 useless extension candidates. Maximal degree in co-relation 114. Up to 10 conditions per place. [2022-07-19 21:17:12,204 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 8 selfloop transitions, 3 changer transitions 9/91 dead transitions. [2022-07-19 21:17:12,204 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 91 transitions, 225 flow [2022-07-19 21:17:12,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:17:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-19 21:17:12,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2022-07-19 21:17:12,217 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9126984126984127 [2022-07-19 21:17:12,218 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 575 transitions. [2022-07-19 21:17:12,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 575 transitions. [2022-07-19 21:17:12,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:12,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 575 transitions. [2022-07-19 21:17:12,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 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) [2022-07-19 21:17:12,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-07-19 21:17:12,234 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 90.0) internal successors, (720), 8 states have internal predecessors, (720), 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) [2022-07-19 21:17:12,235 INFO L186 Difference]: Start difference. First operand has 82 places, 79 transitions, 161 flow. Second operand 7 states and 575 transitions. [2022-07-19 21:17:12,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 91 transitions, 225 flow [2022-07-19 21:17:12,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:17:12,244 INFO L242 Difference]: Finished difference. Result has 92 places, 79 transitions, 179 flow [2022-07-19 21:17:12,246 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=92, PETRI_TRANSITIONS=79} [2022-07-19 21:17:12,250 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 10 predicate places. [2022-07-19 21:17:12,250 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 79 transitions, 179 flow [2022-07-19 21:17:12,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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) [2022-07-19 21:17:12,251 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:12,251 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:12,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:17:12,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:12,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:12,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1173754508, now seen corresponding path program 1 times [2022-07-19 21:17:12,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:12,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849270321] [2022-07-19 21:17:12,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:12,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:12,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:12,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849270321] [2022-07-19 21:17:12,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849270321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:12,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:12,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:17:12,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697169543] [2022-07-19 21:17:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:12,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:17:12,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:12,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:17:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:17:12,487 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 90 [2022-07-19 21:17:12,487 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 79 transitions, 179 flow. Second operand has 8 states, 8 states have (on average 58.125) internal successors, (465), 8 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:12,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:12,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 90 [2022-07-19 21:17:12,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:12,654 INFO L129 PetriNetUnfolder]: 35/177 cut-off events. [2022-07-19 21:17:12,654 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-19 21:17:12,655 INFO L84 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 177 events. 35/177 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 579 event pairs, 6 based on Foata normal form. 10/182 useless extension candidates. Maximal degree in co-relation 285. Up to 50 conditions per place. [2022-07-19 21:17:12,656 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 24 selfloop transitions, 7 changer transitions 12/85 dead transitions. [2022-07-19 21:17:12,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 269 flow [2022-07-19 21:17:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:17:12,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:17:12,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 373 transitions. [2022-07-19 21:17:12,657 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6907407407407408 [2022-07-19 21:17:12,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 373 transitions. [2022-07-19 21:17:12,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 373 transitions. [2022-07-19 21:17:12,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:12,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 373 transitions. [2022-07-19 21:17:12,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 62.166666666666664) internal successors, (373), 6 states have internal predecessors, (373), 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) [2022-07-19 21:17:12,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 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) [2022-07-19 21:17:12,660 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 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) [2022-07-19 21:17:12,660 INFO L186 Difference]: Start difference. First operand has 92 places, 79 transitions, 179 flow. Second operand 6 states and 373 transitions. [2022-07-19 21:17:12,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 269 flow [2022-07-19 21:17:12,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 255 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-19 21:17:12,662 INFO L242 Difference]: Finished difference. Result has 87 places, 71 transitions, 162 flow [2022-07-19 21:17:12,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=87, PETRI_TRANSITIONS=71} [2022-07-19 21:17:12,663 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2022-07-19 21:17:12,663 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 71 transitions, 162 flow [2022-07-19 21:17:12,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.125) internal successors, (465), 8 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:17:12,663 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:12,664 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:12,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:17:12,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1626446111, now seen corresponding path program 1 times [2022-07-19 21:17:12,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:12,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069042377] [2022-07-19 21:17:12,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:12,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:12,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069042377] [2022-07-19 21:17:12,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069042377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:12,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:12,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:17:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194182418] [2022-07-19 21:17:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:12,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:17:12,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:17:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:17:12,752 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 90 [2022-07-19 21:17:12,753 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 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) [2022-07-19 21:17:12,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:12,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 90 [2022-07-19 21:17:12,753 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:12,807 INFO L129 PetriNetUnfolder]: 11/107 cut-off events. [2022-07-19 21:17:12,808 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-19 21:17:12,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 107 events. 11/107 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 193 event pairs, 3 based on Foata normal form. 4/107 useless extension candidates. Maximal degree in co-relation 114. Up to 21 conditions per place. [2022-07-19 21:17:12,809 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 17 selfloop transitions, 4 changer transitions 9/75 dead transitions. [2022-07-19 21:17:12,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 226 flow [2022-07-19 21:17:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:17:12,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-19 21:17:12,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 334 transitions. [2022-07-19 21:17:12,810 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7422222222222222 [2022-07-19 21:17:12,810 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 334 transitions. [2022-07-19 21:17:12,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 334 transitions. [2022-07-19 21:17:12,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:12,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 334 transitions. [2022-07-19 21:17:12,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 66.8) internal successors, (334), 5 states have internal predecessors, (334), 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) [2022-07-19 21:17:12,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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) [2022-07-19 21:17:12,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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) [2022-07-19 21:17:12,813 INFO L186 Difference]: Start difference. First operand has 87 places, 71 transitions, 162 flow. Second operand 5 states and 334 transitions. [2022-07-19 21:17:12,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 226 flow [2022-07-19 21:17:12,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:17:12,815 INFO L242 Difference]: Finished difference. Result has 79 places, 65 transitions, 148 flow [2022-07-19 21:17:12,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=79, PETRI_TRANSITIONS=65} [2022-07-19 21:17:12,816 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -3 predicate places. [2022-07-19 21:17:12,816 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 65 transitions, 148 flow [2022-07-19 21:17:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 64.33333333333333) internal successors, (386), 6 states have internal predecessors, (386), 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) [2022-07-19 21:17:12,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:12,817 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:12,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:17:12,817 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1250675574, now seen corresponding path program 1 times [2022-07-19 21:17:12,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:12,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593075200] [2022-07-19 21:17:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:12,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:12,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:12,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:12,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593075200] [2022-07-19 21:17:12,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593075200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:12,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:12,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:17:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734522741] [2022-07-19 21:17:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:12,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:17:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:17:12,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:17:12,852 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 90 [2022-07-19 21:17:12,852 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 65 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2022-07-19 21:17:12,852 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:12,852 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 90 [2022-07-19 21:17:12,853 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:12,893 INFO L129 PetriNetUnfolder]: 0/69 cut-off events. [2022-07-19 21:17:12,893 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-19 21:17:12,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 69 events. 0/69 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 3/72 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2022-07-19 21:17:12,894 INFO L132 encePairwiseOnDemand]: 86/90 looper letters, 10 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2022-07-19 21:17:12,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 176 flow [2022-07-19 21:17:12,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:17:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:17:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2022-07-19 21:17:12,895 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8037037037037037 [2022-07-19 21:17:12,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2022-07-19 21:17:12,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2022-07-19 21:17:12,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:12,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2022-07-19 21:17:12,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 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) [2022-07-19 21:17:12,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2022-07-19 21:17:12,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 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) [2022-07-19 21:17:12,898 INFO L186 Difference]: Start difference. First operand has 79 places, 65 transitions, 148 flow. Second operand 3 states and 217 transitions. [2022-07-19 21:17:12,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 176 flow [2022-07-19 21:17:12,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 162 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-07-19 21:17:12,904 INFO L242 Difference]: Finished difference. Result has 71 places, 65 transitions, 142 flow [2022-07-19 21:17:12,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2022-07-19 21:17:12,905 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -11 predicate places. [2022-07-19 21:17:12,906 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 142 flow [2022-07-19 21:17:12,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 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) [2022-07-19 21:17:12,906 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:17:12,906 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:17:12,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:17:12,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:17:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:17:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1828211898, now seen corresponding path program 2 times [2022-07-19 21:17:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:17:12,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258484314] [2022-07-19 21:17:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:17:12,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:17:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:17:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:17:13,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:17:13,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258484314] [2022-07-19 21:17:13,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258484314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:17:13,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:17:13,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:17:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808862442] [2022-07-19 21:17:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:17:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:17:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:17:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:17:13,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:17:13,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 90 [2022-07-19 21:17:13,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 142 flow. Second operand has 8 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 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) [2022-07-19 21:17:13,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:17:13,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 90 [2022-07-19 21:17:13,011 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:17:13,064 INFO L129 PetriNetUnfolder]: 0/58 cut-off events. [2022-07-19 21:17:13,065 INFO L130 PetriNetUnfolder]: For 3/6 co-relation queries the response was YES. [2022-07-19 21:17:13,065 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 58 events. 0/58 cut-off events. For 3/6 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 2/60 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-07-19 21:17:13,065 INFO L132 encePairwiseOnDemand]: 85/90 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2022-07-19 21:17:13,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 58 transitions, 175 flow [2022-07-19 21:17:13,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:17:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-19 21:17:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 356 transitions. [2022-07-19 21:17:13,066 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6592592592592592 [2022-07-19 21:17:13,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 356 transitions. [2022-07-19 21:17:13,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 356 transitions. [2022-07-19 21:17:13,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:17:13,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 356 transitions. [2022-07-19 21:17:13,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 59.333333333333336) internal successors, (356), 6 states have internal predecessors, (356), 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) [2022-07-19 21:17:13,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 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) [2022-07-19 21:17:13,068 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 90.0) internal successors, (630), 7 states have internal predecessors, (630), 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) [2022-07-19 21:17:13,068 INFO L186 Difference]: Start difference. First operand has 71 places, 65 transitions, 142 flow. Second operand 6 states and 356 transitions. [2022-07-19 21:17:13,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 58 transitions, 175 flow [2022-07-19 21:17:13,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:17:13,069 INFO L242 Difference]: Finished difference. Result has 68 places, 0 transitions, 0 flow [2022-07-19 21:17:13,069 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=68, PETRI_TRANSITIONS=0} [2022-07-19 21:17:13,070 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, -14 predicate places. [2022-07-19 21:17:13,070 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 0 transitions, 0 flow [2022-07-19 21:17:13,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 58.25) internal successors, (466), 8 states have internal predecessors, (466), 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) [2022-07-19 21:17:13,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-19 21:17:13,072 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-19 21:17:13,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:17:13,073 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-07-19 21:17:13,075 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:17:13,075 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:17:13,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:17:13 BasicIcfg [2022-07-19 21:17:13,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:17:13,079 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:17:13,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:17:13,079 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:17:13,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:17:11" (3/4) ... [2022-07-19 21:17:13,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:17:13,085 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-19 21:17:13,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-19 21:17:13,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:17:13,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:17:13,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:17:13,110 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:17:13,110 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:17:13,110 INFO L158 Benchmark]: Toolchain (without parser) took 2172.35ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 88.6MB in the beginning and 85.7MB in the end (delta: 2.9MB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2022-07-19 21:17:13,110 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:17:13,111 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.56ms. Allocated memory is still 121.6MB. Free memory was 88.6MB in the beginning and 86.6MB in the end (delta: 2.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-19 21:17:13,111 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.51ms. Allocated memory is still 121.6MB. Free memory was 86.2MB in the beginning and 84.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:17:13,111 INFO L158 Benchmark]: Boogie Preprocessor took 13.96ms. Allocated memory is still 121.6MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:17:13,111 INFO L158 Benchmark]: RCFGBuilder took 309.68ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 70.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:17:13,111 INFO L158 Benchmark]: TraceAbstraction took 1397.31ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 69.8MB in the beginning and 88.8MB in the end (delta: -19.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-07-19 21:17:13,112 INFO L158 Benchmark]: Witness Printer took 30.88ms. Allocated memory is still 151.0MB. Free memory was 88.8MB in the beginning and 85.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:17:13,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 81.8MB. Free memory was 41.2MB in the beginning and 41.1MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.56ms. Allocated memory is still 121.6MB. Free memory was 88.6MB in the beginning and 86.6MB in the end (delta: 2.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.51ms. Allocated memory is still 121.6MB. Free memory was 86.2MB in the beginning and 84.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.96ms. Allocated memory is still 121.6MB. Free memory was 84.5MB in the beginning and 82.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 309.68ms. Allocated memory is still 121.6MB. Free memory was 82.9MB in the beginning and 70.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1397.31ms. Allocated memory was 121.6MB in the beginning and 151.0MB in the end (delta: 29.4MB). Free memory was 69.8MB in the beginning and 88.8MB in the end (delta: -19.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Witness Printer took 30.88ms. Allocated memory is still 151.0MB. Free memory was 88.8MB in the beginning and 85.7MB in the end (delta: 3.1MB). 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 108 locations, 2 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: 1.3s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 78 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 52 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 29 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred in iteration=1, InterpolantAutomatonStates: 27, 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, 0.5s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 1277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-19 21:17:13,145 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