./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe029_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe029_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ecf2fc665a67e8bb95ade4d6200b75a6f4637c26 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 22:24:45,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:24:45,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:24:45,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:24:45,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:24:45,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:24:45,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:24:45,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:24:45,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:24:45,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:24:45,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:24:45,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:24:45,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:24:45,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:24:45,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:24:45,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:24:45,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:24:45,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:24:45,861 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:24:45,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:24:45,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:24:45,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:24:45,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:24:45,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:24:45,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:24:45,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:24:45,873 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:24:45,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:24:45,874 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:24:45,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:24:45,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:24:45,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:24:45,877 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:24:45,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:24:45,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:24:45,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:24:45,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:24:45,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:24:45,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:24:45,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:24:45,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:24:45,884 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:24:45,911 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:24:45,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:24:45,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:24:45,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:24:45,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:24:45,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:24:45,914 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:24:45,914 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:24:45,914 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:24:45,914 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:24:45,915 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:24:45,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:24:45,915 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:24:45,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:24:45,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:24:45,915 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:24:45,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:24:45,916 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:24:45,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:24:45,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:24:45,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:24:45,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:24:45,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:24:45,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:24:45,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:24:45,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:24:45,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:24:45,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:24:45,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:24:45,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:24:45,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecf2fc665a67e8bb95ade4d6200b75a6f4637c26 [2021-08-29 22:24:46,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:24:46,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:24:46,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:24:46,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:24:46,183 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:24:46,183 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe029_tso.oepc.i [2021-08-29 22:24:46,239 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f55f6d80/c49e75a25c514499a52ecde1504e08b6/FLAG0598ce325 [2021-08-29 22:24:46,656 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:24:46,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe029_tso.oepc.i [2021-08-29 22:24:46,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f55f6d80/c49e75a25c514499a52ecde1504e08b6/FLAG0598ce325 [2021-08-29 22:24:46,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f55f6d80/c49e75a25c514499a52ecde1504e08b6 [2021-08-29 22:24:46,692 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:24:46,693 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:24:46,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:24:46,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:24:46,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:24:46,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:24:46" (1/1) ... [2021-08-29 22:24:46,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c8e2f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:46, skipping insertion in model container [2021-08-29 22:24:46,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:24:46" (1/1) ... [2021-08-29 22:24:46,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:24:46,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:24:46,863 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe029_tso.oepc.i[950,963] [2021-08-29 22:24:47,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:24:47,028 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:24:47,038 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe029_tso.oepc.i[950,963] [2021-08-29 22:24:47,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:24:47,098 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:24:47,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47 WrapperNode [2021-08-29 22:24:47,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:24:47,100 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:24:47,101 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:24:47,101 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:24:47,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,145 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:24:47,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:24:47,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:24:47,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:24:47,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:24:47,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:24:47,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:24:47,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:24:47,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (1/1) ... [2021-08-29 22:24:47,187 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:24:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:24:47,214 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 22:24:47,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 22:24:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:24:47,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:24:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:24:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:24:47,247 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:24:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:24:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:24:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:24:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:24:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:24:47,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:24:47,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:24:47,249 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-29 22:24:47,438 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:24:47,438 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:24:47,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:24:47 BoogieIcfgContainer [2021-08-29 22:24:47,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:24:47,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:24:47,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:24:47,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:24:47,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:24:46" (1/3) ... [2021-08-29 22:24:47,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745cde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:24:47, skipping insertion in model container [2021-08-29 22:24:47,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:24:47" (2/3) ... [2021-08-29 22:24:47,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745cde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:24:47, skipping insertion in model container [2021-08-29 22:24:47,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:24:47" (3/3) ... [2021-08-29 22:24:47,445 INFO L111 eAbstractionObserver]: Analyzing ICFG safe029_tso.oepc.i [2021-08-29 22:24:47,449 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:24:47,450 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:24:47,450 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:24:47,450 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:24:47,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,481 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,481 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,482 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,482 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,482 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,483 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,484 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,484 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,485 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,485 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,485 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,486 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,486 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,487 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,489 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,490 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,490 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,493 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:24:47,495 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:24:47,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:24:47,539 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 [2021-08-29 22:24:47,539 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-29 22:24:47,558 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:24:47,568 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 65 transitions, 140 flow [2021-08-29 22:24:47,571 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 65 transitions, 140 flow [2021-08-29 22:24:47,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 70 places, 65 transitions, 140 flow [2021-08-29 22:24:47,616 INFO L129 PetriNetUnfolder]: 2/63 cut-off events. [2021-08-29 22:24:47,616 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:24:47,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 63 events. 2/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2021-08-29 22:24:47,622 INFO L116 LiptonReduction]: Number of co-enabled transitions 756 [2021-08-29 22:24:49,465 INFO L131 LiptonReduction]: Checked pairs total: 1595 [2021-08-29 22:24:49,465 INFO L133 LiptonReduction]: Total number of compositions: 62 [2021-08-29 22:24:49,471 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 22 places, 15 transitions, 40 flow [2021-08-29 22:24:49,479 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 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) [2021-08-29 22:24:49,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 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) [2021-08-29 22:24:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-29 22:24:49,488 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:24:49,488 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-29 22:24:49,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:24:49,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:24:49,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1456954353, now seen corresponding path program 1 times [2021-08-29 22:24:49,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:24:49,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478148710] [2021-08-29 22:24:49,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:24:49,498 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:24:49,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:24:49,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:24:49,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:24:49,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478148710] [2021-08-29 22:24:49,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478148710] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:24:49,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:24:49,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:24:49,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885173435] [2021-08-29 22:24:49,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:24:49,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:24:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:24:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:24:49,717 INFO L87 Difference]: Start difference. First operand has 58 states, 57 states have (on average 2.1052631578947367) internal successors, (120), 57 states have internal predecessors, (120), 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 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-29 22:24:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:24:49,735 INFO L93 Difference]: Finished difference Result 69 states and 131 transitions. [2021-08-29 22:24:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:24:49,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-08-29 22:24:49,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:24:49,742 INFO L225 Difference]: With dead ends: 69 [2021-08-29 22:24:49,742 INFO L226 Difference]: Without dead ends: 53 [2021-08-29 22:24:49,743 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:24:49,745 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.32ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.35ms IncrementalHoareTripleChecker+Time [2021-08-29 22:24:49,745 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.32ms Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 8.35ms Time] [2021-08-29 22:24:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-08-29 22:24:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2021-08-29 22:24:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7708333333333333) internal successors, (85), 48 states have internal predecessors, (85), 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) [2021-08-29 22:24:49,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 85 transitions. [2021-08-29 22:24:49,767 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 85 transitions. Word has length 6 [2021-08-29 22:24:49,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:24:49,767 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 85 transitions. [2021-08-29 22:24:49,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-08-29 22:24:49,767 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 85 transitions. [2021-08-29 22:24:49,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 22:24:49,768 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:24:49,768 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:24:49,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:24:49,768 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:24:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:24:49,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2057458070, now seen corresponding path program 1 times [2021-08-29 22:24:49,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:24:49,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654853114] [2021-08-29 22:24:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:24:49,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:24:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:24:49,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:24:49,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:24:49,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654853114] [2021-08-29 22:24:49,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654853114] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:24:49,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:24:49,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:24:49,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220681317] [2021-08-29 22:24:49,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:24:49,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:24:49,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:24:49,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:24:49,837 INFO L87 Difference]: Start difference. First operand 49 states and 85 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-08-29 22:24:49,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:24:49,856 INFO L93 Difference]: Finished difference Result 50 states and 85 transitions. [2021-08-29 22:24:49,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:24:49,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-08-29 22:24:49,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:24:49,857 INFO L225 Difference]: With dead ends: 50 [2021-08-29 22:24:49,857 INFO L226 Difference]: Without dead ends: 50 [2021-08-29 22:24:49,857 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.89ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:24:49,858 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 7 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.32ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.89ms IncrementalHoareTripleChecker+Time [2021-08-29 22:24:49,858 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 13 Invalid, 24 Unknown, 0 Unchecked, 0.32ms Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 13.89ms Time] [2021-08-29 22:24:49,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-08-29 22:24:49,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2021-08-29 22:24:49,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.7555555555555555) internal successors, (79), 45 states have internal predecessors, (79), 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) [2021-08-29 22:24:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 79 transitions. [2021-08-29 22:24:49,862 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 79 transitions. Word has length 7 [2021-08-29 22:24:49,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:24:49,862 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 79 transitions. [2021-08-29 22:24:49,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2021-08-29 22:24:49,863 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 79 transitions. [2021-08-29 22:24:49,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-29 22:24:49,863 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:24:49,863 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:24:49,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:24:49,864 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:24:49,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:24:49,864 INFO L82 PathProgramCache]: Analyzing trace with hash 2079054437, now seen corresponding path program 1 times [2021-08-29 22:24:49,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:24:49,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228350156] [2021-08-29 22:24:49,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:24:49,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:24:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:24:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:24:49,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:24:49,894 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228350156] [2021-08-29 22:24:49,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228350156] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:24:49,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:24:49,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:24:49,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639896759] [2021-08-29 22:24:49,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:24:49,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:24:49,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:24:49,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:24:49,896 INFO L87 Difference]: Start difference. First operand 46 states and 79 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-08-29 22:24:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:24:49,902 INFO L93 Difference]: Finished difference Result 43 states and 73 transitions. [2021-08-29 22:24:49,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:24:49,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-08-29 22:24:49,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:24:49,903 INFO L225 Difference]: With dead ends: 43 [2021-08-29 22:24:49,903 INFO L226 Difference]: Without dead ends: 43 [2021-08-29 22:24:49,903 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.35ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:24:49,904 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.59ms IncrementalHoareTripleChecker+Time [2021-08-29 22:24:49,905 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.14ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 4.59ms Time] [2021-08-29 22:24:49,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-08-29 22:24:49,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-08-29 22:24:49,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 42 states have internal predecessors, (73), 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) [2021-08-29 22:24:49,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 73 transitions. [2021-08-29 22:24:49,911 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 73 transitions. Word has length 7 [2021-08-29 22:24:49,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:24:49,911 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 73 transitions. [2021-08-29 22:24:49,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-08-29 22:24:49,912 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 73 transitions. [2021-08-29 22:24:49,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:24:49,912 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:24:49,912 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:24:49,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:24:49,913 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:24:49,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:24:49,913 INFO L82 PathProgramCache]: Analyzing trace with hash -643310146, now seen corresponding path program 1 times [2021-08-29 22:24:49,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:24:49,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747074647] [2021-08-29 22:24:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:24:49,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:24:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:24:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:24:49,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:24:49,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747074647] [2021-08-29 22:24:49,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747074647] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:24:49,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:24:49,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:24:49,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079782431] [2021-08-29 22:24:49,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:24:49,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:24:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:24:49,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:24:49,965 INFO L87 Difference]: Start difference. First operand 43 states and 73 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-29 22:24:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:24:49,988 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2021-08-29 22:24:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:24:49,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-08-29 22:24:49,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:24:49,989 INFO L225 Difference]: With dead ends: 43 [2021-08-29 22:24:49,989 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 22:24:49,989 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:24:49,990 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.35ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.93ms IncrementalHoareTripleChecker+Time [2021-08-29 22:24:49,990 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.35ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 15.93ms Time] [2021-08-29 22:24:49,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 22:24:49,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-29 22:24:49,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 29 states have internal predecessors, (40), 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) [2021-08-29 22:24:49,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 40 transitions. [2021-08-29 22:24:49,993 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 40 transitions. Word has length 8 [2021-08-29 22:24:49,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:24:49,993 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 40 transitions. [2021-08-29 22:24:49,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-08-29 22:24:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 40 transitions. [2021-08-29 22:24:49,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:24:49,994 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:24:49,994 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:24:49,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:24:49,994 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-29 22:24:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:24:49,995 INFO L82 PathProgramCache]: Analyzing trace with hash 217575122, now seen corresponding path program 1 times [2021-08-29 22:24:49,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:24:49,995 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822265522] [2021-08-29 22:24:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:24:49,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:24:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:24:50,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 22:24:50,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:24:50,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822265522] [2021-08-29 22:24:50,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822265522] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:24:50,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:24:50,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:24:50,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94852660] [2021-08-29 22:24:50,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:24:50,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:24:50,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:24:50,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:24:50,033 INFO L87 Difference]: Start difference. First operand 30 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-29 22:24:50,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:24:50,048 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2021-08-29 22:24:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:24:50,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-08-29 22:24:50,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:24:50,048 INFO L225 Difference]: With dead ends: 25 [2021-08-29 22:24:50,049 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:24:50,049 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.97ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:24:50,049 INFO L928 BasicCegarLoop]: 6 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.13ms IncrementalHoareTripleChecker+Time [2021-08-29 22:24:50,050 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 15 Invalid, 19 Unknown, 0 Unchecked, 0.28ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 9.13ms Time] [2021-08-29 22:24:50,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:24:50,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:24:50,050 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) [2021-08-29 22:24:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:24:50,051 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-08-29 22:24:50,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:24:50,051 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:24:50,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-08-29 22:24:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:24:50,051 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:24:50,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-08-29 22:24:50,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-08-29 22:24:50,053 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-08-29 22:24:50,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:24:50,056 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:24:50,056 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:24:50,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:24:50 BasicIcfg [2021-08-29 22:24:50,058 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:24:50,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:24:50,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:24:50,058 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:24:50,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:24:47" (3/4) ... [2021-08-29 22:24:50,060 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:24:50,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:24:50,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:24:50,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-29 22:24:50,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:24:50,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:24:50,067 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:24:50,085 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:24:50,085 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:24:50,085 INFO L158 Benchmark]: Toolchain (without parser) took 3392.57ms. Allocated memory was 48.2MB in the beginning and 71.3MB in the end (delta: 23.1MB). Free memory was 22.8MB in the beginning and 29.6MB in the end (delta: -6.8MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-08-29 22:24:50,086 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:24:50,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.12ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 22.6MB in the beginning and 33.4MB in the end (delta: -10.7MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-08-29 22:24:50,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.23ms. Allocated memory is still 58.7MB. Free memory was 33.2MB in the beginning and 31.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:24:50,086 INFO L158 Benchmark]: Boogie Preprocessor took 34.58ms. Allocated memory is still 58.7MB. Free memory was 31.2MB in the beginning and 30.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:24:50,086 INFO L158 Benchmark]: RCFGBuilder took 258.38ms. Allocated memory is still 58.7MB. Free memory was 30.0MB in the beginning and 34.1MB in the end (delta: -4.0MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-08-29 22:24:50,087 INFO L158 Benchmark]: TraceAbstraction took 2617.11ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.7MB in the beginning and 32.7MB in the end (delta: 1.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2021-08-29 22:24:50,087 INFO L158 Benchmark]: Witness Printer took 26.90ms. Allocated memory is still 71.3MB. Free memory was 32.7MB in the beginning and 29.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 22:24:50,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 48.2MB. Free memory was 30.8MB in the beginning and 30.8MB in the end (delta: 31.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.12ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 22.6MB in the beginning and 33.4MB in the end (delta: -10.7MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.23ms. Allocated memory is still 58.7MB. Free memory was 33.2MB in the beginning and 31.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.58ms. Allocated memory is still 58.7MB. Free memory was 31.2MB in the beginning and 30.0MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 258.38ms. Allocated memory is still 58.7MB. Free memory was 30.0MB in the beginning and 34.1MB in the end (delta: -4.0MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2617.11ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 33.7MB in the beginning and 32.7MB in the end (delta: 1.0MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Witness Printer took 26.90ms. Allocated memory is still 71.3MB. Free memory was 32.7MB in the beginning and 29.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1894.44ms, 70 PlacesBefore, 22 PlacesAfterwards, 65 TransitionsBefore, 15 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 62 TotalNumberOfCompositions, 1595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1012, positive: 930, positive conditional: 0, positive unconditional: 930, negative: 82, negative conditional: 0, negative unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 593, positive: 562, positive conditional: 0, positive unconditional: 562, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 593, positive: 557, positive conditional: 0, positive unconditional: 557, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 36, positive: 5, positive conditional: 0, positive unconditional: 5, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 62, positive: 9, positive conditional: 0, positive unconditional: 9, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1012, positive: 368, positive conditional: 0, positive unconditional: 368, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 593, unknown conditional: 0, unknown unconditional: 593] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: 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 5 procedures, 80 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2523.99ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 10.52ms, AutomataDifference: 122.76ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 1939.67ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 32 SdHoareTripleChecker+Valid, 51.89ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 41.88ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 83 IncrementalHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 36 mSDtfsCounter, 83 mSolverCounterSat, 1.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.55ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 24.42ms AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.20ms SsaConstructionTime, 88.35ms SatisfiabilityAnalysisTime, 214.60ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 179 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2021-08-29 22:24:50,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...