./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl/sre-trans.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/chl/sre-trans.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 d1467b8dead159844bf8eb103dd6e7637c62edc3 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-05 20:56:42,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-05 20:56:42,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-05 20:56:42,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-05 20:56:42,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-05 20:56:42,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-05 20:56:42,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-05 20:56:42,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-05 20:56:42,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-05 20:56:42,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-05 20:56:42,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-05 20:56:42,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-05 20:56:42,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-05 20:56:42,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-05 20:56:42,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-05 20:56:42,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-05 20:56:42,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-05 20:56:42,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-05 20:56:42,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-05 20:56:42,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-05 20:56:42,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-05 20:56:42,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-05 20:56:42,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-05 20:56:42,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-05 20:56:42,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-05 20:56:42,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-05 20:56:42,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-05 20:56:42,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-05 20:56:42,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-05 20:56:42,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-05 20:56:42,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-05 20:56:42,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-05 20:56:42,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-05 20:56:42,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-05 20:56:42,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-05 20:56:42,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-05 20:56:42,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-05 20:56:42,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-05 20:56:42,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-05 20:56:42,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-05 20:56:42,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-05 20:56:42,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-05 20:56:43,017 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-05 20:56:43,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-05 20:56:43,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-05 20:56:43,019 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-05 20:56:43,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-05 20:56:43,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-05 20:56:43,022 INFO L138 SettingsManager]: * Use SBE=true [2021-10-05 20:56:43,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-05 20:56:43,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-05 20:56:43,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-05 20:56:43,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-05 20:56:43,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-05 20:56:43,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-05 20:56:43,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-05 20:56:43,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-05 20:56:43,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-05 20:56:43,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-05 20:56:43,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-05 20:56:43,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-05 20:56:43,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-05 20:56:43,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-05 20:56:43,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-05 20:56:43,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 20:56:43,028 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-05 20:56:43,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-05 20:56:43,029 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-05 20:56:43,029 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-05 20:56:43,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-05 20:56:43,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-05 20:56:43,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-05 20:56:43,030 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1467b8dead159844bf8eb103dd6e7637c62edc3 [2021-10-05 20:56:43,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-05 20:56:43,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-05 20:56:43,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-05 20:56:43,507 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-05 20:56:43,508 INFO L275 PluginConnector]: CDTParser initialized [2021-10-05 20:56:43,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl/sre-trans.wvr.c [2021-10-05 20:56:43,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8e6264b9/fdadc5df3ef346b3a63633e388ccc8a2/FLAGb277ac62e [2021-10-05 20:56:44,213 INFO L306 CDTParser]: Found 1 translation units. [2021-10-05 20:56:44,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl/sre-trans.wvr.c [2021-10-05 20:56:44,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8e6264b9/fdadc5df3ef346b3a63633e388ccc8a2/FLAGb277ac62e [2021-10-05 20:56:44,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8e6264b9/fdadc5df3ef346b3a63633e388ccc8a2 [2021-10-05 20:56:44,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-05 20:56:44,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-05 20:56:44,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-05 20:56:44,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-05 20:56:44,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-05 20:56:44,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 08:56:44" (1/1) ... [2021-10-05 20:56:44,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce374a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:44, skipping insertion in model container [2021-10-05 20:56:44,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 08:56:44" (1/1) ... [2021-10-05 20:56:44,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-05 20:56:44,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-05 20:56:44,911 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/chl/sre-trans.wvr.c[2216,2229] [2021-10-05 20:56:44,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 20:56:44,935 INFO L203 MainTranslator]: Completed pre-run [2021-10-05 20:56:44,985 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/chl/sre-trans.wvr.c[2216,2229] [2021-10-05 20:56:44,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-05 20:56:45,009 INFO L208 MainTranslator]: Completed translation [2021-10-05 20:56:45,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45 WrapperNode [2021-10-05 20:56:45,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-05 20:56:45,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-05 20:56:45,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-05 20:56:45,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-05 20:56:45,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-05 20:56:45,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-05 20:56:45,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-05 20:56:45,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-05 20:56:45,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-05 20:56:45,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-05 20:56:45,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-05 20:56:45,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-05 20:56:45,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (1/1) ... [2021-10-05 20:56:45,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-05 20:56:45,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-05 20:56:45,175 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) [2021-10-05 20:56:45,198 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 [2021-10-05 20:56:45,245 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-05 20:56:45,245 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-05 20:56:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-05 20:56:45,246 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-05 20:56:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-05 20:56:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-05 20:56:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-05 20:56:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-05 20:56:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-05 20:56:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-05 20:56:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-05 20:56:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-05 20:56:45,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-05 20:56:45,258 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-05 20:56:45,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-05 20:56:45,640 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-05 20:56:45,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 08:56:45 BoogieIcfgContainer [2021-10-05 20:56:45,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-05 20:56:45,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-05 20:56:45,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-05 20:56:45,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-05 20:56:45,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 08:56:44" (1/3) ... [2021-10-05 20:56:45,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3fefce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 08:56:45, skipping insertion in model container [2021-10-05 20:56:45,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 08:56:45" (2/3) ... [2021-10-05 20:56:45,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c3fefce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 08:56:45, skipping insertion in model container [2021-10-05 20:56:45,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 08:56:45" (3/3) ... [2021-10-05 20:56:45,652 INFO L111 eAbstractionObserver]: Analyzing ICFG sre-trans.wvr.c [2021-10-05 20:56:45,659 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-05 20:56:45,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-05 20:56:45,660 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-05 20:56:45,660 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-05 20:56:45,713 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,713 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,714 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,714 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,714 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,715 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,717 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,717 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,718 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,719 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,723 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,724 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,730 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,731 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,731 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,731 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,732 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,733 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,734 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,735 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,735 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,736 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,737 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,737 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,737 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,738 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,739 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,743 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,744 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,744 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,744 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-05 20:56:45,767 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-05 20:56:45,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-05 20:56:45,860 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 [2021-10-05 20:56:45,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-05 20:56:45,893 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-05 20:56:45,909 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 104 transitions, 232 flow [2021-10-05 20:56:45,914 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 104 transitions, 232 flow [2021-10-05 20:56:45,917 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 104 transitions, 232 flow [2021-10-05 20:56:46,040 INFO L129 PetriNetUnfolder]: 7/101 cut-off events. [2021-10-05 20:56:46,040 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-05 20:56:46,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 7/101 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 101 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 66. Up to 2 conditions per place. [2021-10-05 20:56:46,054 INFO L116 LiptonReduction]: Number of co-enabled transitions 1728 [2021-10-05 20:56:50,388 INFO L131 LiptonReduction]: Checked pairs total: 1866 [2021-10-05 20:56:50,388 INFO L133 LiptonReduction]: Total number of compositions: 101 [2021-10-05 20:56:50,398 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2021-10-05 20:56:50,412 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-05 20:56:50,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2021-10-05 20:56:50,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:50,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:50,422 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:50,423 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:50,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:50,429 INFO L82 PathProgramCache]: Analyzing trace with hash -366093841, now seen corresponding path program 1 times [2021-10-05 20:56:50,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:50,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136052165] [2021-10-05 20:56:50,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:50,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:50,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:50,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:50,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136052165] [2021-10-05 20:56:50,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136052165] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:50,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:50,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 20:56:50,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050331330] [2021-10-05 20:56:50,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 20:56:50,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:50,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 20:56:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 20:56:50,976 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-05 20:56:51,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:51,028 INFO L93 Difference]: Finished difference Result 59 states and 99 transitions. [2021-10-05 20:56:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 20:56:51,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:51,041 INFO L225 Difference]: With dead ends: 59 [2021-10-05 20:56:51,042 INFO L226 Difference]: Without dead ends: 38 [2021-10-05 20:56:51,044 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:51,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-05 20:56:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-10-05 20:56:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 37 states have internal predecessors, (62), 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) [2021-10-05 20:56:51,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2021-10-05 20:56:51,080 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 16 [2021-10-05 20:56:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:51,081 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2021-10-05 20:56:51,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-05 20:56:51,082 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2021-10-05 20:56:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-05 20:56:51,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-05 20:56:51,083 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-05 20:56:51,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-05 20:56:51,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-10-05 20:56:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-05 20:56:51,084 INFO L82 PathProgramCache]: Analyzing trace with hash -2067113423, now seen corresponding path program 2 times [2021-10-05 20:56:51,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-05 20:56:51,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725248509] [2021-10-05 20:56:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-05 20:56:51,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-05 20:56:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-05 20:56:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-05 20:56:51,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-05 20:56:51,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725248509] [2021-10-05 20:56:51,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725248509] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-05 20:56:51,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-05 20:56:51,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-05 20:56:51,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321340108] [2021-10-05 20:56:51,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-05 20:56:51,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-05 20:56:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-05 20:56:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-05 20:56:51,285 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-05 20:56:51,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-05 20:56:51,309 INFO L93 Difference]: Finished difference Result 37 states and 61 transitions. [2021-10-05 20:56:51,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-05 20:56:51,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-10-05 20:56:51,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-05 20:56:51,310 INFO L225 Difference]: With dead ends: 37 [2021-10-05 20:56:51,310 INFO L226 Difference]: Without dead ends: 0 [2021-10-05 20:56:51,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-05 20:56:51,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-05 20:56:51,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-05 20:56:51,312 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) [2021-10-05 20:56:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-05 20:56:51,312 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-05 20:56:51,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-05 20:56:51,313 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-05 20:56:51,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-10-05 20:56:51,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-05 20:56:51,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-05 20:56:51,316 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-05 20:56:51,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-05 20:56:51,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-05 20:56:51,317 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-05 20:56:51,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-05 20:56:51,322 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-05 20:56:51,322 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-05 20:56:51,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 08:56:51 BasicIcfg [2021-10-05 20:56:51,325 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-05 20:56:51,325 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-05 20:56:51,325 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-05 20:56:51,325 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-05 20:56:51,326 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 08:56:45" (3/4) ... [2021-10-05 20:56:51,329 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-05 20:56:51,337 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-10-05 20:56:51,337 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-10-05 20:56:51,337 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-10-05 20:56:51,342 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-05 20:56:51,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-05 20:56:51,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-05 20:56:51,343 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-05 20:56:51,396 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-10-05 20:56:51,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-05 20:56:51,399 INFO L168 Benchmark]: Toolchain (without parser) took 6812.05 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 28.4 MB in the beginning and 54.5 MB in the end (delta: -26.1 MB). Peak memory consumption was 32.5 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:51,400 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 37.7 MB. Free memory was 20.9 MB in the beginning and 20.8 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-05 20:56:51,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.35 ms. Allocated memory is still 52.4 MB. Free memory was 28.0 MB in the beginning and 29.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:51,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 65.22 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 27.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:51,401 INFO L168 Benchmark]: Boogie Preprocessor took 53.40 ms. Allocated memory is still 52.4 MB. Free memory was 27.6 MB in the beginning and 26.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:51,402 INFO L168 Benchmark]: RCFGBuilder took 508.26 ms. Allocated memory is still 52.4 MB. Free memory was 26.4 MB in the beginning and 27.3 MB in the end (delta: -953.1 kB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:51,403 INFO L168 Benchmark]: TraceAbstraction took 5679.56 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 26.8 MB in the beginning and 23.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:51,403 INFO L168 Benchmark]: Witness Printer took 71.58 ms. Allocated memory is still 75.5 MB. Free memory was 23.8 MB in the beginning and 54.5 MB in the end (delta: -30.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-05 20:56:51,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 37.7 MB. Free memory was 20.9 MB in the beginning and 20.8 MB in the end (delta: 26.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 416.35 ms. Allocated memory is still 52.4 MB. Free memory was 28.0 MB in the beginning and 29.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 65.22 ms. Allocated memory is still 52.4 MB. Free memory was 29.1 MB in the beginning and 27.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 53.40 ms. Allocated memory is still 52.4 MB. Free memory was 27.6 MB in the beginning and 26.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 508.26 ms. Allocated memory is still 52.4 MB. Free memory was 26.4 MB in the beginning and 27.3 MB in the end (delta: -953.1 kB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5679.56 ms. Allocated memory was 52.4 MB in the beginning and 75.5 MB in the end (delta: 23.1 MB). Free memory was 26.8 MB in the beginning and 23.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * Witness Printer took 71.58 ms. Allocated memory is still 75.5 MB. Free memory was 23.8 MB in the beginning and 54.5 MB in the end (delta: -30.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4474.9ms, 107 PlacesBefore, 30 PlacesAfterwards, 104 TransitionsBefore, 20 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 7 ChoiceCompositions, 101 TotalNumberOfCompositions, 1866 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1866, positive: 1866, positive conditional: 0, positive unconditional: 1866, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1388, positive: 1388, positive conditional: 0, positive unconditional: 1388, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1388, positive: 1388, positive conditional: 0, positive unconditional: 1388, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1866, positive: 478, positive conditional: 0, positive unconditional: 478, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 1388, unknown conditional: 0, unknown unconditional: 1388] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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 7 procedures, 134 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 5477.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.5ms, AutomataDifference: 115.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4551.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 48 SDslu, 17 SDs, 0 SdLazy, 8 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 21.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.3ms SsaConstructionTime, 265.9ms SatisfiabilityAnalysisTime, 293.4ms InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 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! [2021-10-05 20:56:51,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...