./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/spaghetti.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8c2bbc92 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/spaghetti.wvr.c -s /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-2/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 34d542cb610830ea5a2376ad2f54d25e0ddf6733 ........................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-03 11:42:35,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-03 11:42:35,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-03 11:42:35,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-03 11:42:35,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-03 11:42:35,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-03 11:42:35,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-03 11:42:35,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-03 11:42:35,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-03 11:42:35,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-03 11:42:35,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-03 11:42:35,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-03 11:42:35,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-03 11:42:35,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-03 11:42:35,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-03 11:42:35,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-03 11:42:35,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-03 11:42:35,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-03 11:42:35,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-03 11:42:35,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-03 11:42:35,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-03 11:42:35,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-03 11:42:35,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-03 11:42:35,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-03 11:42:35,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-03 11:42:35,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-03 11:42:35,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-03 11:42:35,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-03 11:42:35,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-03 11:42:35,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-03 11:42:35,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-03 11:42:35,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-03 11:42:35,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-03 11:42:35,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-03 11:42:35,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-03 11:42:35,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-03 11:42:35,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-03 11:42:35,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-03 11:42:35,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-03 11:42:35,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-03 11:42:35,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-03 11:42:35,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-03 11:42:35,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-03 11:42:35,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-03 11:42:36,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-03 11:42:36,001 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-03 11:42:36,003 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-03 11:42:36,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-03 11:42:36,004 INFO L138 SettingsManager]: * Use SBE=true [2021-10-03 11:42:36,004 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-03 11:42:36,005 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-03 11:42:36,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-03 11:42:36,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-03 11:42:36,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-03 11:42:36,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-03 11:42:36,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-03 11:42:36,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-03 11:42:36,008 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-03 11:42:36,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-03 11:42:36,008 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-03 11:42:36,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-03 11:42:36,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-03 11:42:36,009 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-03 11:42:36,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-03 11:42:36,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 11:42:36,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-03 11:42:36,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-03 11:42:36,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-03 11:42:36,011 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-03 11:42:36,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-03 11:42:36,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-03 11:42:36,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-03 11:42:36,012 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34d542cb610830ea5a2376ad2f54d25e0ddf6733 [2021-10-03 11:42:36,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-03 11:42:36,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-03 11:42:36,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-03 11:42:36,474 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-03 11:42:36,475 INFO L275 PluginConnector]: CDTParser initialized [2021-10-03 11:42:36,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-03 11:42:36,573 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76384c6df/04df90955a1b4600885b11d66060b458/FLAG20a43ebb5 [2021-10-03 11:42:37,258 INFO L306 CDTParser]: Found 1 translation units. [2021-10-03 11:42:37,259 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c [2021-10-03 11:42:37,259 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 11:42:37,260 WARN L117 ultiparseSymbolTable]: System include assert.h could not be resolved by CDT -- only built-in system includes are available. [2021-10-03 11:42:37,268 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76384c6df/04df90955a1b4600885b11d66060b458/FLAG20a43ebb5 [2021-10-03 11:42:37,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76384c6df/04df90955a1b4600885b11d66060b458 [2021-10-03 11:42:37,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-03 11:42:37,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-03 11:42:37,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-03 11:42:37,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-03 11:42:37,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-03 11:42:37,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:37,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c317b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37, skipping insertion in model container [2021-10-03 11:42:37,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:37,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-03 11:42:37,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-03 11:42:37,826 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 11:42:37,877 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[1320,1333] [2021-10-03 11:42:37,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 11:42:37,894 INFO L203 MainTranslator]: Completed pre-run [2021-10-03 11:42:37,909 WARN L612 FunctionHandler]: implicit declaration of function assert [2021-10-03 11:42:37,923 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/spaghetti.wvr.c[1320,1333] [2021-10-03 11:42:37,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-03 11:42:37,948 INFO L208 MainTranslator]: Completed translation [2021-10-03 11:42:37,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37 WrapperNode [2021-10-03 11:42:37,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-03 11:42:37,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-03 11:42:37,952 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-03 11:42:37,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-03 11:42:37,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:37,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-03 11:42:38,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-03 11:42:38,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-03 11:42:38,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-03 11:42:38,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-03 11:42:38,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-03 11:42:38,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-03 11:42:38,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-03 11:42:38,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (1/1) ... [2021-10-03 11:42:38,117 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-03 11:42:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-03 11:42:38,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-03 11:42:38,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-03 11:42:38,248 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-03 11:42:38,249 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-03 11:42:38,249 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-03 11:42:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-03 11:42:38,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-03 11:42:38,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-03 11:42:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-03 11:42:38,251 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-03 11:42:38,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-03 11:42:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-03 11:42:38,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-03 11:42:38,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-03 11:42:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-03 11:42:38,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-03 11:42:38,256 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-03 11:42:38,699 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-03 11:42:38,700 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-03 11:42:38,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 11:42:38 BoogieIcfgContainer [2021-10-03 11:42:38,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-03 11:42:38,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-03 11:42:38,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-03 11:42:38,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-03 11:42:38,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 11:42:37" (1/3) ... [2021-10-03 11:42:38,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371a4994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 11:42:38, skipping insertion in model container [2021-10-03 11:42:38,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 11:42:37" (2/3) ... [2021-10-03 11:42:38,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371a4994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 11:42:38, skipping insertion in model container [2021-10-03 11:42:38,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 11:42:38" (3/3) ... [2021-10-03 11:42:38,713 INFO L111 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2021-10-03 11:42:38,721 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-03 11:42:38,722 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-03 11:42:38,722 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-03 11:42:38,722 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-03 11:42:38,773 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,774 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,776 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,777 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,777 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,778 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,779 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,780 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,783 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,783 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,784 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,789 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,791 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,793 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,793 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,794 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,794 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,794 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,795 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,795 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,795 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,796 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,798 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,799 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,799 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,799 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,803 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,803 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,804 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,804 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,805 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,805 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,805 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,806 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,811 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,811 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,817 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,818 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,818 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,818 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,821 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~nondet1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,822 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,825 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,825 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,825 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-03 11:42:38,841 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-10-03 11:42:38,899 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-03 11:42:38,908 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-03 11:42:38,909 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-10-03 11:42:38,930 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-03 11:42:38,944 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 115 transitions, 262 flow [2021-10-03 11:42:38,948 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 115 transitions, 262 flow [2021-10-03 11:42:38,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 119 places, 115 transitions, 262 flow [2021-10-03 11:42:39,072 INFO L129 PetriNetUnfolder]: 9/111 cut-off events. [2021-10-03 11:42:39,074 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-03 11:42:39,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 111 events. 9/111 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2021-10-03 11:42:39,094 INFO L116 LiptonReduction]: Number of co-enabled transitions 2718 [2021-10-03 11:42:42,261 INFO L131 LiptonReduction]: Checked pairs total: 3598 [2021-10-03 11:42:42,261 INFO L133 LiptonReduction]: Total number of compositions: 93 [2021-10-03 11:42:42,272 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 43 places, 34 transitions, 100 flow [2021-10-03 11:42:42,316 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 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) [2021-10-03 11:42:42,321 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 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) [2021-10-03 11:42:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-03 11:42:42,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:42:42,339 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:42:42,340 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-03 11:42:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:42:42,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1564829626, now seen corresponding path program 1 times [2021-10-03 11:42:42,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:42:42,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418383040] [2021-10-03 11:42:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:42:42,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:42:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:42:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:42:42,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:42:42,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418383040] [2021-10-03 11:42:42,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418383040] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:42:42,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:42:42,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-03 11:42:42,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525313279] [2021-10-03 11:42:42,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-03 11:42:42,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:42:42,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-03 11:42:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 11:42:42,702 INFO L87 Difference]: Start difference. First operand has 322 states, 321 states have (on average 4.040498442367602) internal successors, (1297), 321 states have internal predecessors, (1297), 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) Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-03 11:42:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:42:42,821 INFO L93 Difference]: Finished difference Result 481 states and 1791 transitions. [2021-10-03 11:42:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-03 11:42:42,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) Word has length 21 [2021-10-03 11:42:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:42:42,841 INFO L225 Difference]: With dead ends: 481 [2021-10-03 11:42:42,841 INFO L226 Difference]: Without dead ends: 256 [2021-10-03 11:42:42,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:42:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-03 11:42:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 206. [2021-10-03 11:42:42,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 3.873170731707317) internal successors, (794), 205 states have internal predecessors, (794), 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) [2021-10-03 11:42:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 794 transitions. [2021-10-03 11:42:42,936 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 794 transitions. Word has length 21 [2021-10-03 11:42:42,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:42:42,940 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 794 transitions. [2021-10-03 11:42:42,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-03 11:42:42,941 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 794 transitions. [2021-10-03 11:42:42,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-03 11:42:42,945 INFO L504 BasicCegarLoop]: Found error trace [2021-10-03 11:42:42,945 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-03 11:42:42,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-03 11:42:42,946 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-10-03 11:42:42,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-03 11:42:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash -449099808, now seen corresponding path program 2 times [2021-10-03 11:42:42,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-03 11:42:42,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986806478] [2021-10-03 11:42:42,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-03 11:42:42,948 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-03 11:42:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-03 11:42:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-03 11:42:43,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-03 11:42:43,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986806478] [2021-10-03 11:42:43,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986806478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-03 11:42:43,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-03 11:42:43,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-03 11:42:43,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802174452] [2021-10-03 11:42:43,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-03 11:42:43,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-03 11:42:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-03 11:42:43,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-03 11:42:43,127 INFO L87 Difference]: Start difference. First operand 206 states and 794 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-03 11:42:43,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-03 11:42:43,222 INFO L93 Difference]: Finished difference Result 259 states and 968 transitions. [2021-10-03 11:42:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-03 11:42:43,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) Word has length 21 [2021-10-03 11:42:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-03 11:42:43,224 INFO L225 Difference]: With dead ends: 259 [2021-10-03 11:42:43,224 INFO L226 Difference]: Without dead ends: 0 [2021-10-03 11:42:43,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-03 11:42:43,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-03 11:42:43,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-03 11:42:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-03 11:42:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-03 11:42:43,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-03 11:42:43,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-03 11:42:43,227 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-03 11:42:43,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-10-03 11:42:43,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-03 11:42:43,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-03 11:42:43,231 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-03 11:42:43,232 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-03 11:42:43,233 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-03 11:42:43,234 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-03 11:42:43,235 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-03 11:42:43,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-03 11:42:43,241 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-03 11:42:43,241 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-03 11:42:43,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 11:42:43 BasicIcfg [2021-10-03 11:42:43,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-03 11:42:43,256 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-03 11:42:43,256 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-03 11:42:43,257 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-03 11:42:43,257 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 11:42:38" (3/4) ... [2021-10-03 11:42:43,262 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-03 11:42:43,271 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-03 11:42:43,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-03 11:42:43,272 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-03 11:42:43,273 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2021-10-03 11:42:43,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-03 11:42:43,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-03 11:42:43,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-03 11:42:43,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-03 11:42:43,346 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-03 11:42:43,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-03 11:42:43,349 INFO L168 Benchmark]: Toolchain (without parser) took 5707.85 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 38.1 MB in the beginning and 40.6 MB in the end (delta: -2.5 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2021-10-03 11:42:43,350 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 23.1 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 11:42:43,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.24 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 43.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-03 11:42:43,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.09 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 41.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 11:42:43,359 INFO L168 Benchmark]: Boogie Preprocessor took 72.47 ms. Allocated memory is still 62.9 MB. Free memory was 41.3 MB in the beginning and 40.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-03 11:42:43,361 INFO L168 Benchmark]: RCFGBuilder took 605.07 ms. Allocated memory is still 62.9 MB. Free memory was 40.1 MB in the beginning and 43.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2021-10-03 11:42:43,362 INFO L168 Benchmark]: TraceAbstraction took 4540.41 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 42.5 MB in the beginning and 43.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-03 11:42:43,364 INFO L168 Benchmark]: Witness Printer took 90.24 ms. Allocated memory is still 79.7 MB. Free memory was 43.9 MB in the beginning and 40.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-03 11:42:43,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 46.1 MB. Free memory was 23.2 MB in the beginning and 23.1 MB in the end (delta: 70.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 303.24 ms. Allocated memory is still 62.9 MB. Free memory was 37.8 MB in the beginning and 43.0 MB in the end (delta: -5.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.09 ms. Allocated memory is still 62.9 MB. Free memory was 42.9 MB in the beginning and 41.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 72.47 ms. Allocated memory is still 62.9 MB. Free memory was 41.3 MB in the beginning and 40.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 605.07 ms. Allocated memory is still 62.9 MB. Free memory was 40.1 MB in the beginning and 43.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4540.41 ms. Allocated memory was 62.9 MB in the beginning and 79.7 MB in the end (delta: 16.8 MB). Free memory was 42.5 MB in the beginning and 43.9 MB in the end (delta: -1.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 90.24 ms. Allocated memory is still 79.7 MB. Free memory was 43.9 MB in the beginning and 40.6 MB in the end (delta: 3.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3313.0ms, 119 PlacesBefore, 43 PlacesAfterwards, 115 TransitionsBefore, 34 TransitionsAfterwards, 2718 CoEnabledTransitionPairs, 5 FixpointIterations, 37 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 5 ChoiceCompositions, 93 TotalNumberOfCompositions, 3598 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2822, positive: 2773, positive conditional: 0, positive unconditional: 2773, negative: 49, negative conditional: 0, negative unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2056, positive: 2032, positive conditional: 0, positive unconditional: 2032, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2056, positive: 1998, positive conditional: 0, positive unconditional: 1998, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 58, positive: 34, positive conditional: 0, positive unconditional: 34, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 128, positive: 69, positive conditional: 0, positive unconditional: 69, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2822, positive: 741, positive conditional: 0, positive unconditional: 741, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 2056, unknown conditional: 0, unknown unconditional: 2056] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 70]: 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 9 procedures, 149 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 4343.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 26.1ms, AutomataDifference: 261.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 3407.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 105 SDtfs, 43 SDslu, 60 SDs, 0 SdLazy, 91 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.6ms AutomataMinimizationTime, 2 MinimizatonAttempts, 50 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.1ms SsaConstructionTime, 181.0ms SatisfiabilityAnalysisTime, 209.0ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 82 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-10-03 11:42:43,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...