./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 35987657 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-?-3598765 [2022-07-21 08:49:49,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:49:49,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:49:49,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:49:49,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:49:49,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:49:49,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:49:49,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:49:49,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:49:49,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:49:49,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:49:49,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:49:49,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:49:49,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:49:49,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:49:49,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:49:49,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:49:49,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:49:49,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:49:49,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:49:49,975 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:49:49,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:49:49,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:49:49,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:49:49,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:49:49,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:49:49,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:49:49,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:49:49,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:49:49,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:49:49,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:49:49,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:49:49,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:49:49,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:49:49,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:49:49,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:49:49,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:49:49,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:49:49,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:49:49,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:49:49,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:49:49,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:49:49,998 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:49:50,028 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:49:50,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:49:50,030 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:49:50,030 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:49:50,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:49:50,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:49:50,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:49:50,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:49:50,031 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:49:50,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:49:50,032 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:49:50,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:49:50,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:49:50,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:49:50,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:49:50,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:49:50,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:49:50,033 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:49:50,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:49:50,034 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:49:50,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:49:50,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:49:50,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:49:50,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:49:50,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:49:50,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:49:50,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:49:50,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:49:50,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:49:50,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:49:50,035 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:49:50,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:49:50,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:49:50,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d0c43dd41f99fbfade8285f6054d50d854da6853e7f72e8b1866aad54c9c5c4 [2022-07-21 08:49:50,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:49:50,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:49:50,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:49:50,323 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:49:50,323 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:49:50,324 INFO L432 ainManager$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 [2022-07-21 08:49:50,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0e76004/22ba3e6bf81a4b2ab169e0b57caccda0/FLAGebb0ea877 [2022-07-21 08:49:50,780 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:49:50,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/13-privatized_35-traces-ex-2_true.i [2022-07-21 08:49:50,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0e76004/22ba3e6bf81a4b2ab169e0b57caccda0/FLAGebb0ea877 [2022-07-21 08:49:50,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0e76004/22ba3e6bf81a4b2ab169e0b57caccda0 [2022-07-21 08:49:50,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:49:50,821 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:49:50,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:49:50,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:49:50,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:49:50,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:49:50" (1/1) ... [2022-07-21 08:49:50,829 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec9858b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:50, skipping insertion in model container [2022-07-21 08:49:50,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:49:50" (1/1) ... [2022-07-21 08:49:50,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:49:50,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:49:51,057 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] [2022-07-21 08:49:51,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:49:51,187 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:49:51,197 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] [2022-07-21 08:49:51,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:49:51,247 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:49:51,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51 WrapperNode [2022-07-21 08:49:51,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:49:51,249 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:49:51,249 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:49:51,249 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:49:51,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,288 INFO L137 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2022-07-21 08:49:51,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:49:51,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:49:51,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:49:51,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:49:51,296 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,321 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:49:51,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:49:51,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:49:51,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:49:51,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (1/1) ... [2022-07-21 08:49:51,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:49:51,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:49:51,354 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) [2022-07-21 08:49:51,360 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 [2022-07-21 08:49:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:49:51,383 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:49:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:49:51,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:49:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-07-21 08:49:51,385 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-07-21 08:49:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:49:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:49:51,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:49:51,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:49:51,386 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:49:51,457 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:49:51,458 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:49:51,591 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:49:51,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:49:51,595 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:49:51,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:49:51 BoogieIcfgContainer [2022-07-21 08:49:51,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:49:51,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:49:51,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:49:51,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:49:51,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:49:50" (1/3) ... [2022-07-21 08:49:51,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5452e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:49:51, skipping insertion in model container [2022-07-21 08:49:51,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:49:51" (2/3) ... [2022-07-21 08:49:51,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c5452e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:49:51, skipping insertion in model container [2022-07-21 08:49:51,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:49:51" (3/3) ... [2022-07-21 08:49:51,608 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_35-traces-ex-2_true.i [2022-07-21 08:49:51,611 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:49:51,617 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:49:51,617 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 08:49:51,617 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:49:51,665 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:49:51,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 74 places, 71 transitions, 147 flow [2022-07-21 08:49:51,720 INFO L129 PetriNetUnfolder]: 1/70 cut-off events. [2022-07-21 08:49:51,721 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:49:51,723 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. [2022-07-21 08:49:51,731 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 71 transitions, 147 flow [2022-07-21 08:49:51,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 119 flow [2022-07-21 08:49:51,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:49:51,753 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@43c2066e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@13b0d653 [2022-07-21 08:49:51,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-21 08:49:51,774 INFO L129 PetriNetUnfolder]: 0/55 cut-off events. [2022-07-21 08:49:51,779 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:49:51,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:51,780 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] [2022-07-21 08:49:51,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:49:51,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:51,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1163219958, now seen corresponding path program 1 times [2022-07-21 08:49:51,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:51,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389440307] [2022-07-21 08:49:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:51,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:52,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389440307] [2022-07-21 08:49:52,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389440307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:52,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:52,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:49:52,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288642905] [2022-07-21 08:49:52,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:52,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:49:52,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:52,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:49:52,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:49:52,098 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 71 [2022-07-21 08:49:52,101 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) [2022-07-21 08:49:52,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:52,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 71 [2022-07-21 08:49:52,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:52,185 INFO L129 PetriNetUnfolder]: 8/101 cut-off events. [2022-07-21 08:49:52,186 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:49:52,187 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. [2022-07-21 08:49:52,188 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 8 selfloop transitions, 3 changer transitions 9/70 dead transitions. [2022-07-21 08:49:52,188 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 183 flow [2022-07-21 08:49:52,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:49:52,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:49:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 442 transitions. [2022-07-21 08:49:52,205 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8893360160965795 [2022-07-21 08:49:52,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 442 transitions. [2022-07-21 08:49:52,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 442 transitions. [2022-07-21 08:49:52,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:52,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 442 transitions. [2022-07-21 08:49:52,215 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) [2022-07-21 08:49:52,219 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) [2022-07-21 08:49:52,220 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) [2022-07-21 08:49:52,221 INFO L186 Difference]: Start difference. First operand has 62 places, 58 transitions, 119 flow. Second operand 7 states and 442 transitions. [2022-07-21 08:49:52,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 183 flow [2022-07-21 08:49:52,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:49:52,225 INFO L242 Difference]: Finished difference. Result has 72 places, 58 transitions, 137 flow [2022-07-21 08:49:52,226 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} [2022-07-21 08:49:52,228 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2022-07-21 08:49:52,229 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 137 flow [2022-07-21 08:49:52,229 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) [2022-07-21 08:49:52,229 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:52,229 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] [2022-07-21 08:49:52,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:49:52,230 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:49:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1776305511, now seen corresponding path program 1 times [2022-07-21 08:49:52,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:52,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104886460] [2022-07-21 08:49:52,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:52,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:52,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:52,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:52,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104886460] [2022-07-21 08:49:52,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104886460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:52,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:52,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:49:52,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064913810] [2022-07-21 08:49:52,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:52,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:49:52,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:52,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:49:52,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:49:52,323 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 71 [2022-07-21 08:49:52,323 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) [2022-07-21 08:49:52,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:52,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 71 [2022-07-21 08:49:52,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:52,435 INFO L129 PetriNetUnfolder]: 3/87 cut-off events. [2022-07-21 08:49:52,435 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-07-21 08:49:52,436 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. [2022-07-21 08:49:52,436 INFO L132 encePairwiseOnDemand]: 62/71 looper letters, 13 selfloop transitions, 5 changer transitions 13/64 dead transitions. [2022-07-21 08:49:52,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 64 transitions, 205 flow [2022-07-21 08:49:52,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:49:52,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:49:52,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2022-07-21 08:49:52,438 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6861167002012073 [2022-07-21 08:49:52,439 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 341 transitions. [2022-07-21 08:49:52,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 341 transitions. [2022-07-21 08:49:52,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:52,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 341 transitions. [2022-07-21 08:49:52,440 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) [2022-07-21 08:49:52,442 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) [2022-07-21 08:49:52,442 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) [2022-07-21 08:49:52,442 INFO L186 Difference]: Start difference. First operand has 72 places, 58 transitions, 137 flow. Second operand 7 states and 341 transitions. [2022-07-21 08:49:52,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 64 transitions, 205 flow [2022-07-21 08:49:52,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 191 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-21 08:49:52,445 INFO L242 Difference]: Finished difference. Result has 68 places, 51 transitions, 118 flow [2022-07-21 08:49:52,445 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} [2022-07-21 08:49:52,446 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2022-07-21 08:49:52,446 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 118 flow [2022-07-21 08:49:52,446 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) [2022-07-21 08:49:52,446 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:49:52,447 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] [2022-07-21 08:49:52,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:49:52,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-21 08:49:52,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:49:52,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1481176972, now seen corresponding path program 1 times [2022-07-21 08:49:52,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:49:52,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977816532] [2022-07-21 08:49:52,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:49:52,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:49:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:49:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:49:52,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:49:52,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977816532] [2022-07-21 08:49:52,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977816532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:49:52,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:49:52,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:49:52,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222146823] [2022-07-21 08:49:52,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:49:52,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:49:52,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:49:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:49:52,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:49:52,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2022-07-21 08:49:52,618 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) [2022-07-21 08:49:52,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:49:52,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2022-07-21 08:49:52,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:49:52,717 INFO L129 PetriNetUnfolder]: 0/43 cut-off events. [2022-07-21 08:49:52,717 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-07-21 08:49:52,717 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. [2022-07-21 08:49:52,718 INFO L132 encePairwiseOnDemand]: 65/71 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2022-07-21 08:49:52,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 43 transitions, 138 flow [2022-07-21 08:49:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:49:52,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:49:52,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 286 transitions. [2022-07-21 08:49:52,719 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5754527162977867 [2022-07-21 08:49:52,719 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 286 transitions. [2022-07-21 08:49:52,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 286 transitions. [2022-07-21 08:49:52,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:49:52,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 286 transitions. [2022-07-21 08:49:52,720 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) [2022-07-21 08:49:52,721 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) [2022-07-21 08:49:52,721 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) [2022-07-21 08:49:52,721 INFO L186 Difference]: Start difference. First operand has 68 places, 51 transitions, 118 flow. Second operand 7 states and 286 transitions. [2022-07-21 08:49:52,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 43 transitions, 138 flow [2022-07-21 08:49:52,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:49:52,722 INFO L242 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2022-07-21 08:49:52,722 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} [2022-07-21 08:49:52,722 INFO L279 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2022-07-21 08:49:52,723 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2022-07-21 08:49:52,723 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) [2022-07-21 08:49:52,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-07-21 08:49:52,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-07-21 08:49:52,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:49:52,725 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 08:49:52,729 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:49:52,729 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:49:52,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:49:52 BasicIcfg [2022-07-21 08:49:52,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:49:52,737 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:49:52,737 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:49:52,737 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:49:52,738 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:49:51" (3/4) ... [2022-07-21 08:49:52,739 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:49:52,743 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-07-21 08:49:52,746 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-21 08:49:52,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:49:52,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:49:52,747 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:49:52,767 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:49:52,767 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:49:52,767 INFO L158 Benchmark]: Toolchain (without parser) took 1946.11ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 53.6MB in the beginning and 39.8MB in the end (delta: 13.8MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2022-07-21 08:49:52,768 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:49:52,768 INFO L158 Benchmark]: CACSL2BoogieTranslator took 424.61ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 47.4MB in the end (delta: 6.0MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-07-21 08:49:52,768 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.58ms. Allocated memory is still 73.4MB. Free memory was 47.4MB in the beginning and 45.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:49:52,768 INFO L158 Benchmark]: Boogie Preprocessor took 38.95ms. Allocated memory is still 73.4MB. Free memory was 45.4MB in the beginning and 44.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:49:52,769 INFO L158 Benchmark]: RCFGBuilder took 266.58ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 32.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 08:49:52,769 INFO L158 Benchmark]: TraceAbstraction took 1138.97ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 32.1MB in the beginning and 42.8MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 08:49:52,769 INFO L158 Benchmark]: Witness Printer took 29.72ms. Allocated memory is still 92.3MB. Free memory was 42.8MB in the beginning and 39.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 08:49:52,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 73.4MB. Free memory is still 53.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 424.61ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 47.4MB in the end (delta: 6.0MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.58ms. Allocated memory is still 73.4MB. Free memory was 47.4MB in the beginning and 45.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.95ms. Allocated memory is still 73.4MB. Free memory was 45.4MB in the beginning and 44.4MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 266.58ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 32.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1138.97ms. Allocated memory was 73.4MB in the beginning and 92.3MB in the end (delta: 18.9MB). Free memory was 32.1MB in the beginning and 42.8MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 29.72ms. Allocated memory is still 92.3MB. Free memory was 42.8MB in the beginning and 39.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. 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: 1.0s, 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, 0.1s 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, 0.4s 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! [2022-07-21 08:49:52,794 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