./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.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 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:50:45,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:50:45,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:50:45,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:50:45,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:50:45,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:50:45,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:50:45,551 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:50:45,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:50:45,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:50:45,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:50:45,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:50:45,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:50:45,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:50:45,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:50:45,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:50:45,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:50:45,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:50:45,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:50:45,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:50:45,574 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:50:45,575 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:50:45,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:50:45,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:50:45,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:50:45,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:50:45,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:50:45,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:50:45,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:50:45,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:50:45,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:50:45,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:50:45,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:50:45,590 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:50:45,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:50:45,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:50:45,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:50:45,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:50:45,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:50:45,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:50:45,593 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:50:45,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:50:45,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:50:45,626 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:50:45,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:50:45,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:50:45,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:50:45,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:50:45,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:50:45,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:50:45,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:50:45,633 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:50:45,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:50:45,634 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:50:45,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:50:45,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:50:45,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:50:45,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:50:45,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:50:45,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:50:45,636 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:50:45,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:50:45,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:50:45,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:50:45,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:50:45,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:50:45,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:50:45,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:45,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:50:45,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:50:45,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:50:45,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:50:45,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:50:45,638 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:50:45,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:50:45,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:50:45,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37f99419c791b8329e91533415d896c367c9197a331e0ac4d97f5b27dc6c2be9 [2022-07-13 21:50:45,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:50:45,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:50:45,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:50:45,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:50:45,885 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:50:45,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2022-07-13 21:50:45,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0451152f2/3d55dab0d9ee4063aeebadf4951decce/FLAGb19ab1d11 [2022-07-13 21:50:46,373 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:50:46,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/fkp2013_variant-2.i [2022-07-13 21:50:46,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0451152f2/3d55dab0d9ee4063aeebadf4951decce/FLAGb19ab1d11 [2022-07-13 21:50:46,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0451152f2/3d55dab0d9ee4063aeebadf4951decce [2022-07-13 21:50:46,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:50:46,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:50:46,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:46,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:50:46,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:50:46,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79002924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46, skipping insertion in model container [2022-07-13 21:50:46,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:50:46,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:50:46,701 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/pthread-lit/fkp2013_variant-2.i[30003,30016] [2022-07-13 21:50:46,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:46,729 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:50:46,776 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/pthread-lit/fkp2013_variant-2.i[30003,30016] [2022-07-13 21:50:46,780 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:50:46,812 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:50:46,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46 WrapperNode [2022-07-13 21:50:46,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:50:46,813 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:46,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:50:46,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:50:46,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,830 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,849 INFO L137 Inliner]: procedures = 172, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2022-07-13 21:50:46,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:50:46,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:50:46,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:50:46,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:50:46,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,868 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:50:46,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:50:46,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:50:46,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:50:46,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (1/1) ... [2022-07-13 21:50:46,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:50:46,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:50:46,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 21:50:46,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 21:50:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2022-07-13 21:50:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2022-07-13 21:50:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-07-13 21:50:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-07-13 21:50:46,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 21:50:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:50:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 21:50:46,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 21:50:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:50:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:50:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:50:46,953 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 21:50:47,097 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:50:47,098 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:50:47,230 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:50:47,237 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:50:47,237 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 21:50:47,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:47 BoogieIcfgContainer [2022-07-13 21:50:47,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:50:47,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:50:47,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:50:47,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:50:47,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:50:46" (1/3) ... [2022-07-13 21:50:47,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e1117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:47, skipping insertion in model container [2022-07-13 21:50:47,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:50:46" (2/3) ... [2022-07-13 21:50:47,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c5e1117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:50:47, skipping insertion in model container [2022-07-13 21:50:47,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:47" (3/3) ... [2022-07-13 21:50:47,246 INFO L111 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-2.i [2022-07-13 21:50:47,259 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 21:50:47,265 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:50:47,265 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 21:50:47,265 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 21:50:47,297 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:50:47,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 83 places, 80 transitions, 170 flow [2022-07-13 21:50:47,356 INFO L129 PetriNetUnfolder]: 4/93 cut-off events. [2022-07-13 21:50:47,357 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:47,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 93 events. 4/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-07-13 21:50:47,364 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 80 transitions, 170 flow [2022-07-13 21:50:47,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 166 flow [2022-07-13 21:50:47,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:50:47,381 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@65e5d434, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a22b8ff [2022-07-13 21:50:47,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 21:50:47,394 INFO L129 PetriNetUnfolder]: 3/57 cut-off events. [2022-07-13 21:50:47,394 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:47,395 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:47,395 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] [2022-07-13 21:50:47,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:47,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:47,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1926868283, now seen corresponding path program 1 times [2022-07-13 21:50:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:47,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965348489] [2022-07-13 21:50:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:47,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:47,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965348489] [2022-07-13 21:50:47,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965348489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:47,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:47,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:50:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574728602] [2022-07-13 21:50:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:50:47,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:50:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:50:47,772 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 80 [2022-07-13 21:50:47,775 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 166 flow. Second operand has 9 states, 9 states have (on average 57.44444444444444) internal successors, (517), 9 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:47,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:47,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 80 [2022-07-13 21:50:47,777 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:48,029 INFO L129 PetriNetUnfolder]: 71/344 cut-off events. [2022-07-13 21:50:48,029 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-13 21:50:48,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 344 events. 71/344 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1900 event pairs, 14 based on Foata normal form. 4/311 useless extension candidates. Maximal degree in co-relation 467. Up to 38 conditions per place. [2022-07-13 21:50:48,033 INFO L132 encePairwiseOnDemand]: 68/80 looper letters, 28 selfloop transitions, 11 changer transitions 6/100 dead transitions. [2022-07-13 21:50:48,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 100 transitions, 304 flow [2022-07-13 21:50:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:50:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:50:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 672 transitions. [2022-07-13 21:50:48,055 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7636363636363637 [2022-07-13 21:50:48,056 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 672 transitions. [2022-07-13 21:50:48,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 672 transitions. [2022-07-13 21:50:48,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:48,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 672 transitions. [2022-07-13 21:50:48,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.09090909090909) internal successors, (672), 11 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,070 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,071 INFO L186 Difference]: Start difference. First operand has 82 places, 79 transitions, 166 flow. Second operand 11 states and 672 transitions. [2022-07-13 21:50:48,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 100 transitions, 304 flow [2022-07-13 21:50:48,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 100 transitions, 303 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-13 21:50:48,077 INFO L242 Difference]: Finished difference. Result has 94 places, 80 transitions, 209 flow [2022-07-13 21:50:48,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=209, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2022-07-13 21:50:48,085 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2022-07-13 21:50:48,085 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 209 flow [2022-07-13 21:50:48,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 57.44444444444444) internal successors, (517), 9 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,086 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:48,087 INFO L200 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:48,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:50:48,088 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-13 21:50:48,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2080092778, now seen corresponding path program 1 times [2022-07-13 21:50:48,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:48,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298756444] [2022-07-13 21:50:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:50:48,157 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:50:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:50:48,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:50:48,214 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:50:48,216 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2022-07-13 21:50:48,227 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-07-13 21:50:48,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-07-13 21:50:48,228 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-07-13 21:50:48,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:50:48,228 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 21:50:48,232 WARN L231 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-07-13 21:50:48,232 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-07-13 21:50:48,260 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-13 21:50:48,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 101 transitions, 226 flow [2022-07-13 21:50:48,292 INFO L129 PetriNetUnfolder]: 5/119 cut-off events. [2022-07-13 21:50:48,292 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 21:50:48,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 119 events. 5/119 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 147 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 128. Up to 6 conditions per place. [2022-07-13 21:50:48,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 101 transitions, 226 flow [2022-07-13 21:50:48,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 86 transitions, 187 flow [2022-07-13 21:50:48,302 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:50:48,304 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@65e5d434, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a22b8ff [2022-07-13 21:50:48,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-13 21:50:48,311 INFO L129 PetriNetUnfolder]: 3/58 cut-off events. [2022-07-13 21:50:48,312 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-13 21:50:48,312 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:48,312 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] [2022-07-13 21:50:48,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:50:48,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash 51703260, now seen corresponding path program 1 times [2022-07-13 21:50:48,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:48,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009068529] [2022-07-13 21:50:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:48,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:50:48,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:50:48,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:50:48,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009068529] [2022-07-13 21:50:48,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009068529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:50:48,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:50:48,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 21:50:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770901671] [2022-07-13 21:50:48,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:50:48,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 21:50:48,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:50:48,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 21:50:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:50:48,498 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 101 [2022-07-13 21:50:48,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 187 flow. Second operand has 9 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 21:50:48,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 101 [2022-07-13 21:50:48,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 21:50:48,798 INFO L129 PetriNetUnfolder]: 429/1137 cut-off events. [2022-07-13 21:50:48,798 INFO L130 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-07-13 21:50:48,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 1137 events. 429/1137 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 8537 event pairs, 24 based on Foata normal form. 19/1036 useless extension candidates. Maximal degree in co-relation 1887. Up to 213 conditions per place. [2022-07-13 21:50:48,807 INFO L132 encePairwiseOnDemand]: 88/101 looper letters, 54 selfloop transitions, 14 changer transitions 6/133 dead transitions. [2022-07-13 21:50:48,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 465 flow [2022-07-13 21:50:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 21:50:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-13 21:50:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 855 transitions. [2022-07-13 21:50:48,813 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7695769576957696 [2022-07-13 21:50:48,814 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 855 transitions. [2022-07-13 21:50:48,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 855 transitions. [2022-07-13 21:50:48,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 21:50:48,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 855 transitions. [2022-07-13 21:50:48,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.72727272727273) internal successors, (855), 11 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,819 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 101.0) internal successors, (1212), 12 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,820 INFO L186 Difference]: Start difference. First operand has 91 places, 86 transitions, 187 flow. Second operand 11 states and 855 transitions. [2022-07-13 21:50:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 465 flow [2022-07-13 21:50:48,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 133 transitions, 462 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-13 21:50:48,823 INFO L242 Difference]: Finished difference. Result has 104 places, 91 transitions, 262 flow [2022-07-13 21:50:48,823 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=101, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=262, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2022-07-13 21:50:48,824 INFO L279 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2022-07-13 21:50:48,824 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 262 flow [2022-07-13 21:50:48,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 71.44444444444444) internal successors, (643), 9 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:50:48,825 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 21:50:48,825 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:50:48,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:50:48,825 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-13 21:50:48,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:50:48,826 INFO L85 PathProgramCache]: Analyzing trace with hash -492590774, now seen corresponding path program 1 times [2022-07-13 21:50:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:50:48,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656713990] [2022-07-13 21:50:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:50:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:50:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:50:48,843 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 21:50:48,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 21:50:48,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 21:50:48,866 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 21:50:48,867 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-13 21:50:48,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-07-13 21:50:48,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-13 21:50:48,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-13 21:50:48,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-07-13 21:50:48,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:50:48,868 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 21:50:48,872 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2022-07-13 21:50:48,872 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 21:50:48,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 09:50:48 BasicIcfg [2022-07-13 21:50:48,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 21:50:48,935 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 21:50:48,935 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 21:50:48,935 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 21:50:48,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:50:47" (3/4) ... [2022-07-13 21:50:48,937 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 21:50:48,993 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 21:50:48,993 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 21:50:48,994 INFO L158 Benchmark]: Toolchain (without parser) took 2597.63ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 56.0MB in the beginning and 130.5MB in the end (delta: -74.5MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2022-07-13 21:50:48,994 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:50:48,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.77ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 55.8MB in the beginning and 85.5MB in the end (delta: -29.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-13 21:50:48,995 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.03ms. Allocated memory is still 119.5MB. Free memory was 85.5MB in the beginning and 83.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:48,996 INFO L158 Benchmark]: Boogie Preprocessor took 19.83ms. Allocated memory is still 119.5MB. Free memory was 83.5MB in the beginning and 82.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 21:50:48,996 INFO L158 Benchmark]: RCFGBuilder took 368.15ms. Allocated memory is still 119.5MB. Free memory was 81.9MB in the beginning and 70.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 21:50:48,996 INFO L158 Benchmark]: TraceAbstraction took 1694.43ms. Allocated memory is still 119.5MB. Free memory was 69.8MB in the beginning and 50.2MB in the end (delta: 19.6MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. [2022-07-13 21:50:48,997 INFO L158 Benchmark]: Witness Printer took 58.10ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 50.2MB in the beginning and 130.5MB in the end (delta: -80.3MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2022-07-13 21:50:48,999 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 90.2MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.77ms. Allocated memory was 90.2MB in the beginning and 119.5MB in the end (delta: 29.4MB). Free memory was 55.8MB in the beginning and 85.5MB in the end (delta: -29.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.03ms. Allocated memory is still 119.5MB. Free memory was 85.5MB in the beginning and 83.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.83ms. Allocated memory is still 119.5MB. Free memory was 83.5MB in the beginning and 82.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 368.15ms. Allocated memory is still 119.5MB. Free memory was 81.9MB in the beginning and 70.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1694.43ms. Allocated memory is still 119.5MB. Free memory was 69.8MB in the beginning and 50.2MB in the end (delta: 19.6MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB. * Witness Printer took 58.10ms. Allocated memory was 119.5MB in the beginning and 159.4MB in the end (delta: 39.8MB). Free memory was 50.2MB in the beginning and 130.5MB in the end (delta: -80.3MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 690]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 volatile int x; VAL [x=0] [L698] 0 volatile int n; VAL [n=0, x=0] [L710] 0 pthread_t t1, t2; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=0, t1={5:0}, t2={3:0}, x=0] [L711] 0 int i; VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=0, t1={5:0}, t2={3:0}, x=0] [L712] 0 x = 0 VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=0, t1={5:0}, t2={3:0}, x=0] [L713] 0 n = __VERIFIER_nondet_int() VAL [\old(argc)=49, __VERIFIER_nondet_int()=1, argc=49, argv={51:50}, argv={51:50}, n=1, t1={5:0}, t2={3:0}, x=0] [L714] CALL 0 assume_abort_if_not(n > 0) [L686] COND FALSE 0 !(!cond) VAL [\old(cond)=1, cond=1, n=1, x=0] [L714] RET 0 assume_abort_if_not(n > 0) [L715] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, n=1, pthread_create(&t1, 0, thr1, 0)=-1, t1={5:0}, t2={3:0}, x=0] [L700] CALL 1 __VERIFIER_assert(x < n) [L716] 0 i = 0 VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=0, n=1, t1={5:0}, t2={3:0}, x=0] [L716] COND TRUE 0 i < n VAL [\old(argc)=49, argc=49, argv={51:50}, argv={51:50}, i=0, n=1, t1={5:0}, t2={3:0}, x=0] [L717] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={51:50}, argv={51:50}, i=0, n=1, pthread_create(&t2, 0, thr2, 0)=0, t1={5:0}, t2={3:0}, x=0] [L704] 2 int t; VAL [arg={0:0}, arg={0:0}, n=1, x=0] [L705] 2 t = x VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=0] [L706] 2 x = t + 1 VAL [arg={0:0}, arg={0:0}, n=1, t=0, x=1] [L689] COND TRUE 1 !(cond) VAL [\old(cond)=0, arg={0:0}, arg={0:0}, cond=0, n=1, t=0, x=1] [L690] 1 reach_error() VAL [\old(cond)=0, arg={0:0}, arg={0:0}, cond=0, n=1, t=0, x=1] - UnprovableResult [Line: 717]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 715]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 99 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 11 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=209occurred in iteration=1, InterpolantAutomatonStates: 11, 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, 0.2s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 95 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94 IncrementalHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 94 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=262occurred in iteration=1, InterpolantAutomatonStates: 11, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 164 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! [2022-07-13 21:50:49,035 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE