./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_35-traces-ex-2_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 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:32:11,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:32:11,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:32:11,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:32:11,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:32:11,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:32:11,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:32:11,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:32:11,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:32:11,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:32:11,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:32:11,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:32:11,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:32:11,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:32:11,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:32:11,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:32:11,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:32:11,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:32:11,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:32:11,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:32:11,898 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:32:11,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:32:11,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:32:11,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:32:11,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:32:11,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:32:11,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:32:11,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:32:11,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:32:11,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:32:11,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:32:11,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:32:11,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:32:11,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:32:11,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:32:11,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:32:11,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:32:11,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:32:11,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:32:11,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:32:11,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:32:11,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:32:11,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:32:11,957 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:32:11,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:32:11,958 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:32:11,958 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:32:11,959 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:32:11,959 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:32:11,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:32:11,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:32:11,960 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:32:11,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:32:11,961 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:32:11,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:32:11,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:32:11,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:32:11,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:32:11,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:32:11,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:32:11,962 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:32:11,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:32:11,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:32:11,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:32:11,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:32:11,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:32:11,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:32:11,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:32:11,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:32:11,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:32:11,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:32:11,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:32:11,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:32:11,965 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:32:11,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:32:11,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:32:11,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 [2022-07-22 21:32:12,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:32:12,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:32:12,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:32:12,206 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:32:12,207 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:32:12,208 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i [2022-07-22 21:32:12,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75da247ac/cbd9afbec1f547fbae11471c3b5b1f08/FLAG3049fab7c [2022-07-22 21:32:12,708 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:32:12,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i [2022-07-22 21:32:12,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75da247ac/cbd9afbec1f547fbae11471c3b5b1f08/FLAG3049fab7c [2022-07-22 21:32:12,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75da247ac/cbd9afbec1f547fbae11471c3b5b1f08 [2022-07-22 21:32:12,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:32:12,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:32:12,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:32:12,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:32:12,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:32:12,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:32:12" (1/1) ... [2022-07-22 21:32:12,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6002889f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:12, skipping insertion in model container [2022-07-22 21:32:12,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:32:12" (1/1) ... [2022-07-22 21:32:12,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:32:12,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:32:12,982 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_35-traces-ex-2_true.i[1088,1101] [2022-07-22 21:32:13,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:32:13,155 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:32:13,167 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_35-traces-ex-2_true.i[1088,1101] [2022-07-22 21:32:13,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:32:13,234 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:32:13,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13 WrapperNode [2022-07-22 21:32:13,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:32:13,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:32:13,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:32:13,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:32:13,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,287 INFO L137 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2022-07-22 21:32:13,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:32:13,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:32:13,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:32:13,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:32:13,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:32:13,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:32:13,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:32:13,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:32:13,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (1/1) ... [2022-07-22 21:32:13,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:32:13,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:32:13,381 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) [2022-07-22 21:32:13,386 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 [2022-07-22 21:32:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:32:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:32:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:32:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:32:13,415 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-22 21:32:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-22 21:32:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:32:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:32:13,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:32:13,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:32:13,417 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:32:13,522 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:32:13,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:32:13,652 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:32:13,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:32:13,658 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:32:13,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:32:13 BoogieIcfgContainer [2022-07-22 21:32:13,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:32:13,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:32:13,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:32:13,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:32:13,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:32:12" (1/3) ... [2022-07-22 21:32:13,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f0173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:32:13, skipping insertion in model container [2022-07-22 21:32:13,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:32:13" (2/3) ... [2022-07-22 21:32:13,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f0173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:32:13, skipping insertion in model container [2022-07-22 21:32:13,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:32:13" (3/3) ... [2022-07-22 21:32:13,667 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_35-traces-ex-2_true.i [2022-07-22 21:32:13,671 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:32:13,678 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:32:13,678 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:32:13,679 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:32:13,711 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-22 21:32:13,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 71 transitions, 147 flow [2022-07-22 21:32:13,796 INFO L129 PetriNetUnfolder]: 1/70 cut-off events. [2022-07-22 21:32:13,796 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:32:13,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2022-07-22 21:32:13,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 71 transitions, 147 flow [2022-07-22 21:32:13,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 119 flow [2022-07-22 21:32:13,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:32:13,824 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@55aff5ef, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bfd738a [2022-07-22 21:32:13,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-22 21:32:13,849 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2022-07-22 21:32:13,850 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:32:13,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:32:13,851 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] [2022-07-22 21:32:13,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:32:13,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:32:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1163219958, now seen corresponding path program 1 times [2022-07-22 21:32:13,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:32:13,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221313013] [2022-07-22 21:32:13,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:32:13,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:32:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:32:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:32:14,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:32:14,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221313013] [2022-07-22 21:32:14,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221313013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:32:14,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:32:14,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:32:14,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161662724] [2022-07-22 21:32:14,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:32:14,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:32:14,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:32:14,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:32:14,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:32:14,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 71 [2022-07-22 21:32:14,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 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) [2022-07-22 21:32:14,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:32:14,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 71 [2022-07-22 21:32:14,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:32:14,297 INFO L129 PetriNetUnfolder]: 8/101 cut-off events. [2022-07-22 21:32:14,297 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 21:32:14,298 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 101 events. 8/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 199 event pairs, 0 based on Foata normal form. 3/104 useless extension candidates. Maximal degree in co-relation 96. Up to 10 conditions per place. [2022-07-22 21:32:14,299 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 8 selfloop transitions, 3 changer transitions 9/70 dead transitions. [2022-07-22 21:32:14,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 183 flow [2022-07-22 21:32:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:32:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:32:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 442 transitions. [2022-07-22 21:32:14,313 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8893360160965795 [2022-07-22 21:32:14,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 442 transitions. [2022-07-22 21:32:14,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 442 transitions. [2022-07-22 21:32:14,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:32:14,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 442 transitions. [2022-07-22 21:32:14,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 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) [2022-07-22 21:32:14,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:32:14,332 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:32:14,334 INFO L186 Difference]: Start difference. First operand has 62 places, 58 transitions, 119 flow. Second operand 7 states and 442 transitions. [2022-07-22 21:32:14,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 183 flow [2022-07-22 21:32:14,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:32:14,343 INFO L242 Difference]: Finished difference. Result has 72 places, 58 transitions, 137 flow [2022-07-22 21:32:14,345 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=137, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2022-07-22 21:32:14,349 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2022-07-22 21:32:14,350 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 137 flow [2022-07-22 21:32:14,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.2) internal successors, (306), 5 states have internal predecessors, (306), 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) [2022-07-22 21:32:14,351 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:32:14,351 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] [2022-07-22 21:32:14,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:32:14,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:32:14,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:32:14,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1776305511, now seen corresponding path program 1 times [2022-07-22 21:32:14,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:32:14,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041661997] [2022-07-22 21:32:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:32:14,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:32:14,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:32:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:32:14,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:32:14,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041661997] [2022-07-22 21:32:14,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041661997] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:32:14,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:32:14,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:32:14,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8234619] [2022-07-22 21:32:14,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:32:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:32:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:32:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:32:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:32:14,452 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 71 [2022-07-22 21:32:14,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 46.42857142857143) internal successors, (325), 7 states have internal predecessors, (325), 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) [2022-07-22 21:32:14,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:32:14,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 71 [2022-07-22 21:32:14,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:32:14,584 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2022-07-22 21:32:14,584 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-22 21:32:14,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 87 events. 3/87 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 12/99 useless extension candidates. Maximal degree in co-relation 128. Up to 12 conditions per place. [2022-07-22 21:32:14,585 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 13 selfloop transitions, 5 changer transitions 13/64 dead transitions. [2022-07-22 21:32:14,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 64 transitions, 205 flow [2022-07-22 21:32:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:32:14,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:32:14,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2022-07-22 21:32:14,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6861167002012073 [2022-07-22 21:32:14,589 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 341 transitions. [2022-07-22 21:32:14,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 341 transitions. [2022-07-22 21:32:14,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:32:14,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 341 transitions. [2022-07-22 21:32:14,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 48.714285714285715) internal successors, (341), 7 states have internal predecessors, (341), 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) [2022-07-22 21:32:14,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:32:14,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:32:14,594 INFO L186 Difference]: Start difference. First operand has 72 places, 58 transitions, 137 flow. Second operand 7 states and 341 transitions. [2022-07-22 21:32:14,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 64 transitions, 205 flow [2022-07-22 21:32:14,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 191 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-22 21:32:14,596 INFO L242 Difference]: Finished difference. Result has 68 places, 51 transitions, 118 flow [2022-07-22 21:32:14,596 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=118, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2022-07-22 21:32:14,597 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2022-07-22 21:32:14,597 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 118 flow [2022-07-22 21:32:14,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.42857142857143) internal successors, (325), 7 states have internal predecessors, (325), 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) [2022-07-22 21:32:14,598 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:32:14,598 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] [2022-07-22 21:32:14,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:32:14,598 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:32:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:32:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1481176972, now seen corresponding path program 1 times [2022-07-22 21:32:14,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:32:14,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408418055] [2022-07-22 21:32:14,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:32:14,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:32:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:32:14,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:32:14,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:32:14,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408418055] [2022-07-22 21:32:14,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408418055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:32:14,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:32:14,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:32:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828438159] [2022-07-22 21:32:14,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:32:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:32:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:32:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:32:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:32:14,840 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2022-07-22 21:32:14,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 118 flow. Second operand has 10 states, 10 states have (on average 40.4) internal successors, (404), 10 states have internal predecessors, (404), 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) [2022-07-22 21:32:14,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:32:14,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2022-07-22 21:32:14,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:32:14,959 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2022-07-22 21:32:14,959 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-22 21:32:14,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 43 events. 0/43 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 1/44 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2022-07-22 21:32:14,961 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2022-07-22 21:32:14,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 43 transitions, 138 flow [2022-07-22 21:32:14,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:32:14,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:32:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 286 transitions. [2022-07-22 21:32:14,964 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5754527162977867 [2022-07-22 21:32:14,964 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 286 transitions. [2022-07-22 21:32:14,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 286 transitions. [2022-07-22 21:32:14,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:32:14,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 286 transitions. [2022-07-22 21:32:14,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 40.857142857142854) internal successors, (286), 7 states have internal predecessors, (286), 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) [2022-07-22 21:32:14,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:32:14,969 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 71.0) internal successors, (568), 8 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:32:14,969 INFO L186 Difference]: Start difference. First operand has 68 places, 51 transitions, 118 flow. Second operand 7 states and 286 transitions. [2022-07-22 21:32:14,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 43 transitions, 138 flow [2022-07-22 21:32:14,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:32:14,971 INFO L242 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2022-07-22 21:32:14,971 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2022-07-22 21:32:14,973 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2022-07-22 21:32:14,973 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2022-07-22 21:32:14,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 40.4) internal successors, (404), 10 states have internal predecessors, (404), 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) [2022-07-22 21:32:14,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-22 21:32:14,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-22 21:32:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:32:14,978 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-22 21:32:14,982 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:32:14,983 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:32:14,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:32:14 BasicIcfg [2022-07-22 21:32:14,992 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:32:14,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:32:14,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:32:14,993 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:32:14,994 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:32:13" (3/4) ... [2022-07-22 21:32:14,996 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:32:15,002 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-22 21:32:15,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-22 21:32:15,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:32:15,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:32:15,007 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:32:15,047 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:32:15,047 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:32:15,048 INFO L158 Benchmark]: Toolchain (without parser) took 2311.55ms. Allocated memory is still 104.9MB. Free memory was 69.2MB in the beginning and 49.9MB in the end (delta: 19.3MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-07-22 21:32:15,048 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 21.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:32:15,049 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.57ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 72.3MB in the end (delta: -3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 21:32:15,049 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.25ms. Allocated memory is still 104.9MB. Free memory was 72.3MB in the beginning and 70.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:32:15,052 INFO L158 Benchmark]: Boogie Preprocessor took 20.75ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 69.2MB in the end (delta: 891.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:32:15,052 INFO L158 Benchmark]: RCFGBuilder took 350.24ms. Allocated memory is still 104.9MB. Free memory was 69.2MB in the beginning and 57.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:32:15,052 INFO L158 Benchmark]: TraceAbstraction took 1331.18ms. Allocated memory is still 104.9MB. Free memory was 56.7MB in the beginning and 52.6MB in the end (delta: 4.2MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-07-22 21:32:15,053 INFO L158 Benchmark]: Witness Printer took 54.31ms. Allocated memory is still 104.9MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:32:15,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 79.7MB. Free memory was 59.7MB in the beginning and 59.7MB in the end (delta: 21.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.57ms. Allocated memory is still 104.9MB. Free memory was 68.9MB in the beginning and 72.3MB in the end (delta: -3.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.25ms. Allocated memory is still 104.9MB. Free memory was 72.3MB in the beginning and 70.0MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.75ms. Allocated memory is still 104.9MB. Free memory was 70.0MB in the beginning and 69.2MB in the end (delta: 891.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 350.24ms. Allocated memory is still 104.9MB. Free memory was 69.2MB in the beginning and 57.6MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1331.18ms. Allocated memory is still 104.9MB. Free memory was 56.7MB in the beginning and 52.6MB in the end (delta: 4.2MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * Witness Printer took 54.31ms. Allocated memory is still 104.9MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 87 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: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 53 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 32 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=1, InterpolantAutomatonStates: 21, 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, 145 NumberOfCodeBlocks, 145 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 21:32:15,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE