./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.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/safe008_tso.opt.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 ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:21:20,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:21:20,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:21:20,909 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:21:20,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:21:20,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:21:20,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:21:20,915 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:21:20,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:21:20,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:21:20,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:21:20,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:21:20,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:21:20,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:21:20,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:21:20,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:21:20,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:21:20,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:21:20,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:21:20,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:21:20,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:21:20,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:21:20,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:21:20,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:21:20,951 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:21:20,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:21:20,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:21:20,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:21:20,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:21:20,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:21:20,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:21:20,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:21:20,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:21:20,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:21:20,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:21:20,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:21:20,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:21:20,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:21:20,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:21:20,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:21:20,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:21:20,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:21:20,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:21:20,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:21:20,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:21:20,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:21:20,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:21:20,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:21:20,994 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:21:20,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:21:20,994 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:21:20,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:21:20,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:21:20,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:21:20,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:21:20,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:21:20,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:21:20,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:21:20,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:21:20,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:21:20,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:21:20,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:21:20,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:21:20,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:21:20,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:21:20,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:21:20,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:21:20,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:21:20,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:21:20,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:21:20,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:21:20,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:21:20,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0dd35677cfacf05fc27f5cca6df484a5bc4e8e [2021-08-29 22:21:21,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:21:21,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:21:21,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:21:21,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:21:21,281 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:21:21,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2021-08-29 22:21:21,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c30a81a/a67afc2914cf40d8ba0b3af0ab530126/FLAG413d87374 [2021-08-29 22:21:21,735 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:21:21,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe008_tso.opt.i [2021-08-29 22:21:21,746 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c30a81a/a67afc2914cf40d8ba0b3af0ab530126/FLAG413d87374 [2021-08-29 22:21:21,755 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4c30a81a/a67afc2914cf40d8ba0b3af0ab530126 [2021-08-29 22:21:21,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:21:21,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:21:21,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:21:21,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:21:21,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:21:21,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:21:21" (1/1) ... [2021-08-29 22:21:21,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2465e3ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:21, skipping insertion in model container [2021-08-29 22:21:21,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:21:21" (1/1) ... [2021-08-29 22:21:21,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:21:21,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:21:21,912 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/safe008_tso.opt.i[949,962] [2021-08-29 22:21:22,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:21:22,064 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:21:22,073 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/safe008_tso.opt.i[949,962] [2021-08-29 22:21:22,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:21:22,141 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:21:22,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22 WrapperNode [2021-08-29 22:21:22,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:21:22,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:21:22,144 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:21:22,144 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:21:22,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:21:22,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:21:22,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:21:22,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:21:22,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:21:22,234 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:21:22,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:21:22,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:21:22,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (1/1) ... [2021-08-29 22:21:22,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:21:22,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:21:22,286 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 22:21:22,312 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 22:21:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:21:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:21:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:21:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:21:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:21:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:21:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:21:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:21:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:21:22,331 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:21:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:21:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:21:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:21:22,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:21:22,333 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 22:21:22,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:21:22,494 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:21:22,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:21:22 BoogieIcfgContainer [2021-08-29 22:21:22,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:21:22,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:21:22,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:21:22,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:21:22,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:21:21" (1/3) ... [2021-08-29 22:21:22,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9cc4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:21:22, skipping insertion in model container [2021-08-29 22:21:22,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:21:22" (2/3) ... [2021-08-29 22:21:22,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a9cc4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:21:22, skipping insertion in model container [2021-08-29 22:21:22,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:21:22" (3/3) ... [2021-08-29 22:21:22,505 INFO L111 eAbstractionObserver]: Analyzing ICFG safe008_tso.opt.i [2021-08-29 22:21:22,510 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:21:22,510 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:21:22,510 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:21:22,510 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:21:22,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,538 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,538 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,538 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,539 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,539 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,539 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,540 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,540 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,541 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,541 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,541 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,542 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,542 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,543 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,543 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,549 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,549 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,549 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,549 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,552 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,553 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,553 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,553 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,554 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,555 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,556 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:21:22,556 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:21:22,591 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:21:22,598 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 22:21:22,599 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-29 22:21:22,624 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:21:22,639 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:21:22,641 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:21:22,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-29 22:21:22,693 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-29 22:21:22,693 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:21:22,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-29 22:21:22,699 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-08-29 22:21:24,839 INFO L131 LiptonReduction]: Checked pairs total: 3053 [2021-08-29 22:21:24,839 INFO L133 LiptonReduction]: Total number of compositions: 73 [2021-08-29 22:21:24,849 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2021-08-29 22:21:24,869 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 22:21:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 22:21:24,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:21:24,876 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:24,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:24,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:24,880 INFO L82 PathProgramCache]: Analyzing trace with hash -949650869, now seen corresponding path program 1 times [2021-08-29 22:21:24,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:24,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503312132] [2021-08-29 22:21:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:24,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,099 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 22:21:25,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503312132] [2021-08-29 22:21:25,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503312132] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:21:25,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479219060] [2021-08-29 22:21:25,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:21:25,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:21:25,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:21:25,119 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 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 4.0) internal successors, (8), 2 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 22:21:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,166 INFO L93 Difference]: Finished difference Result 323 states and 857 transitions. [2021-08-29 22:21:25,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:21:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 22:21:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,184 INFO L225 Difference]: With dead ends: 323 [2021-08-29 22:21:25,185 INFO L226 Difference]: Without dead ends: 287 [2021-08-29 22:21:25,185 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.75ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:21:25,193 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 5 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.47ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,194 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 19 Invalid, 17 Unknown, 0 Unchecked, 0.53ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 18.47ms Time] [2021-08-29 22:21:25,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-08-29 22:21:25,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 257. [2021-08-29 22:21:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.71875) internal successors, (696), 256 states have internal predecessors, (696), 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 22:21:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 696 transitions. [2021-08-29 22:21:25,232 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 696 transitions. Word has length 8 [2021-08-29 22:21:25,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,233 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 696 transitions. [2021-08-29 22:21:25,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 22:21:25,234 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 696 transitions. [2021-08-29 22:21:25,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:21:25,235 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:25,235 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:25,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:21:25,235 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:25,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:25,237 INFO L82 PathProgramCache]: Analyzing trace with hash 606947832, now seen corresponding path program 1 times [2021-08-29 22:21:25,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:25,238 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575267638] [2021-08-29 22:21:25,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:25,239 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,290 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 22:21:25,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575267638] [2021-08-29 22:21:25,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575267638] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:21:25,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53918895] [2021-08-29 22:21:25,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:21:25,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:21:25,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:21:25,295 INFO L87 Difference]: Start difference. First operand 257 states and 696 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:21:25,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,320 INFO L93 Difference]: Finished difference Result 272 states and 703 transitions. [2021-08-29 22:21:25,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:21:25,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-08-29 22:21:25,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,322 INFO L225 Difference]: With dead ends: 272 [2021-08-29 22:21:25,333 INFO L226 Difference]: Without dead ends: 272 [2021-08-29 22:21:25,333 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.61ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:21:25,334 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.09ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,334 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 19 Invalid, 19 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 19.09ms Time] [2021-08-29 22:21:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-08-29 22:21:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 242. [2021-08-29 22:21:25,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 2.672199170124481) internal successors, (644), 241 states have internal predecessors, (644), 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 22:21:25,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 644 transitions. [2021-08-29 22:21:25,352 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 644 transitions. Word has length 9 [2021-08-29 22:21:25,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,352 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 644 transitions. [2021-08-29 22:21:25,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:21:25,353 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 644 transitions. [2021-08-29 22:21:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:21:25,354 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:25,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:25,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:21:25,355 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:25,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:25,355 INFO L82 PathProgramCache]: Analyzing trace with hash 625570090, now seen corresponding path program 1 times [2021-08-29 22:21:25,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:25,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172629897] [2021-08-29 22:21:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:25,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,410 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 22:21:25,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172629897] [2021-08-29 22:21:25,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172629897] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:21:25,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775661638] [2021-08-29 22:21:25,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:21:25,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:21:25,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:21:25,412 INFO L87 Difference]: Start difference. First operand 242 states and 644 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:21:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,434 INFO L93 Difference]: Finished difference Result 254 states and 651 transitions. [2021-08-29 22:21:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:21:25,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-08-29 22:21:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,436 INFO L225 Difference]: With dead ends: 254 [2021-08-29 22:21:25,436 INFO L226 Difference]: Without dead ends: 254 [2021-08-29 22:21:25,437 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.39ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:21:25,439 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 22 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.79ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,440 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 17.79ms Time] [2021-08-29 22:21:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-08-29 22:21:25,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 218. [2021-08-29 22:21:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.640552995391705) internal successors, (573), 217 states have internal predecessors, (573), 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 22:21:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 573 transitions. [2021-08-29 22:21:25,457 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 573 transitions. Word has length 9 [2021-08-29 22:21:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,457 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 573 transitions. [2021-08-29 22:21:25,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 22:21:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 573 transitions. [2021-08-29 22:21:25,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:21:25,459 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:25,459 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:25,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:21:25,460 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:25,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2082164607, now seen corresponding path program 1 times [2021-08-29 22:21:25,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:25,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773834539] [2021-08-29 22:21:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:25,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,502 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 22:21:25,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773834539] [2021-08-29 22:21:25,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773834539] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:21:25,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799027151] [2021-08-29 22:21:25,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:21:25,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:21:25,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:21:25,505 INFO L87 Difference]: Start difference. First operand 218 states and 573 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:21:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,525 INFO L93 Difference]: Finished difference Result 260 states and 643 transitions. [2021-08-29 22:21:25,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:21:25,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:21:25,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,526 INFO L225 Difference]: With dead ends: 260 [2021-08-29 22:21:25,526 INFO L226 Difference]: Without dead ends: 128 [2021-08-29 22:21:25,526 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.53ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:21:25,528 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 29 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.41ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.13ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,528 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 25 Invalid, 21 Unknown, 0 Unchecked, 0.41ms Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 12.13ms Time] [2021-08-29 22:21:25,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-29 22:21:25,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-08-29 22:21:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.322834645669291) internal successors, (295), 127 states have internal predecessors, (295), 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 22:21:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 295 transitions. [2021-08-29 22:21:25,532 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 295 transitions. Word has length 10 [2021-08-29 22:21:25,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,537 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 295 transitions. [2021-08-29 22:21:25,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 22:21:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 295 transitions. [2021-08-29 22:21:25,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:21:25,538 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:25,538 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:25,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:21:25,538 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:25,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:25,539 INFO L82 PathProgramCache]: Analyzing trace with hash -762480212, now seen corresponding path program 1 times [2021-08-29 22:21:25,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:25,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161283376] [2021-08-29 22:21:25,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:25,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,584 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 22:21:25,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161283376] [2021-08-29 22:21:25,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161283376] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:21:25,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918911725] [2021-08-29 22:21:25,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:21:25,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:21:25,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:21:25,587 INFO L87 Difference]: Start difference. First operand 128 states and 295 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 22:21:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,610 INFO L93 Difference]: Finished difference Result 130 states and 280 transitions. [2021-08-29 22:21:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:21:25,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-08-29 22:21:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,611 INFO L225 Difference]: With dead ends: 130 [2021-08-29 22:21:25,611 INFO L226 Difference]: Without dead ends: 70 [2021-08-29 22:21:25,611 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.14ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:21:25,612 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.42ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.69ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,612 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.42ms Time], IncrementalHoareTripleChecker [5 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 16.69ms Time] [2021-08-29 22:21:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-08-29 22:21:25,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-08-29 22:21:25,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.0) internal successors, (138), 69 states have internal predecessors, (138), 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 22:21:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 138 transitions. [2021-08-29 22:21:25,617 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 138 transitions. Word has length 12 [2021-08-29 22:21:25,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,617 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 138 transitions. [2021-08-29 22:21:25,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 22:21:25,618 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 138 transitions. [2021-08-29 22:21:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:21:25,619 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:25,620 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:25,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:21:25,620 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:25,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:25,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2139866200, now seen corresponding path program 1 times [2021-08-29 22:21:25,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:25,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470906977] [2021-08-29 22:21:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:25,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,696 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 22:21:25,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470906977] [2021-08-29 22:21:25,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470906977] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:21:25,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169525500] [2021-08-29 22:21:25,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:21:25,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:21:25,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:21:25,699 INFO L87 Difference]: Start difference. First operand 70 states and 138 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 22:21:25,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,724 INFO L93 Difference]: Finished difference Result 75 states and 138 transitions. [2021-08-29 22:21:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:21:25,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-08-29 22:21:25,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,726 INFO L225 Difference]: With dead ends: 75 [2021-08-29 22:21:25,726 INFO L226 Difference]: Without dead ends: 61 [2021-08-29 22:21:25,727 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:21:25,730 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.26ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,730 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 36 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 17.26ms Time] [2021-08-29 22:21:25,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-08-29 22:21:25,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-08-29 22:21:25,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.8666666666666667) internal successors, (112), 60 states have internal predecessors, (112), 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 22:21:25,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 112 transitions. [2021-08-29 22:21:25,733 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 112 transitions. Word has length 13 [2021-08-29 22:21:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,733 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 112 transitions. [2021-08-29 22:21:25,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 22:21:25,733 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 112 transitions. [2021-08-29 22:21:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:21:25,734 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:25,734 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:25,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:21:25,734 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:25,735 INFO L82 PathProgramCache]: Analyzing trace with hash -2018203969, now seen corresponding path program 1 times [2021-08-29 22:21:25,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:25,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944938972] [2021-08-29 22:21:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:25,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,785 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 22:21:25,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944938972] [2021-08-29 22:21:25,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944938972] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:21:25,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572205740] [2021-08-29 22:21:25,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:21:25,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:21:25,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:21:25,789 INFO L87 Difference]: Start difference. First operand 61 states and 112 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 22:21:25,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,818 INFO L93 Difference]: Finished difference Result 57 states and 101 transitions. [2021-08-29 22:21:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:21:25,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-08-29 22:21:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,819 INFO L225 Difference]: With dead ends: 57 [2021-08-29 22:21:25,819 INFO L226 Difference]: Without dead ends: 49 [2021-08-29 22:21:25,820 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.26ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:21:25,824 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.15ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.99ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,824 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 27 Invalid, 41 Unknown, 0 Unchecked, 2.15ms Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 21.99ms Time] [2021-08-29 22:21:25,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-29 22:21:25,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-29 22:21:25,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.7916666666666667) internal successors, (86), 48 states have internal predecessors, (86), 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 22:21:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 86 transitions. [2021-08-29 22:21:25,826 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 86 transitions. Word has length 14 [2021-08-29 22:21:25,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,827 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 86 transitions. [2021-08-29 22:21:25,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 22:21:25,827 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 86 transitions. [2021-08-29 22:21:25,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:21:25,827 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:21:25,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:21:25,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:21:25,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:21:25,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:21:25,828 INFO L82 PathProgramCache]: Analyzing trace with hash 993433575, now seen corresponding path program 1 times [2021-08-29 22:21:25,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:21:25,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752445048] [2021-08-29 22:21:25,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:21:25,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:21:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:21:25,888 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 22:21:25,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:21:25,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752445048] [2021-08-29 22:21:25,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752445048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:21:25,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:21:25,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:21:25,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278722421] [2021-08-29 22:21:25,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:21:25,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:21:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:21:25,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:21:25,890 INFO L87 Difference]: Start difference. First operand 49 states and 86 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:21:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:21:25,911 INFO L93 Difference]: Finished difference Result 46 states and 83 transitions. [2021-08-29 22:21:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:21:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 15 [2021-08-29 22:21:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:21:25,912 INFO L225 Difference]: With dead ends: 46 [2021-08-29 22:21:25,912 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:21:25,912 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 14.23ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:21:25,913 INFO L928 BasicCegarLoop]: 7 mSDtfsCounter, 34 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.29ms IncrementalHoareTripleChecker+Time [2021-08-29 22:21:25,913 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 20 Invalid, 29 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 15.29ms Time] [2021-08-29 22:21:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:21:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:21:25,914 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 22:21:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:21:25,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-08-29 22:21:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:21:25,914 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:21:25,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 22:21:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:21:25,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:21:25,916 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-08-29 22:21:25,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-08-29 22:21:25,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-08-29 22:21:25,917 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-08-29 22:21:25,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 22:21:25,920 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:21:25,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:21:25,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:21:25 BasicIcfg [2021-08-29 22:21:25,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:21:25,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:21:25,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:21:25,922 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:21:25,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:21:22" (3/4) ... [2021-08-29 22:21:25,924 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:21:25,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:21:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:21:25,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:21:25,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-29 22:21:25,931 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:21:25,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:21:25,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:21:25,950 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:21:25,950 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:21:25,951 INFO L158 Benchmark]: Toolchain (without parser) took 4193.02ms. Allocated memory was 48.2MB in the beginning and 88.1MB in the end (delta: 39.8MB). Free memory was 22.6MB in the beginning and 59.0MB in the end (delta: -36.4MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2021-08-29 22:21:25,951 INFO L158 Benchmark]: CDTParser took 0.61ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.6MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:21:25,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.53ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.4MB in the beginning and 34.4MB in the end (delta: -12.0MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-08-29 22:21:25,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.31ms. Allocated memory is still 60.8MB. Free memory was 34.4MB in the beginning and 32.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:21:25,952 INFO L158 Benchmark]: Boogie Preprocessor took 35.48ms. Allocated memory is still 60.8MB. Free memory was 32.4MB in the beginning and 31.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:21:25,952 INFO L158 Benchmark]: RCFGBuilder took 261.96ms. Allocated memory is still 60.8MB. Free memory was 31.1MB in the beginning and 34.5MB in the end (delta: -3.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-08-29 22:21:25,952 INFO L158 Benchmark]: TraceAbstraction took 3424.86ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 34.2MB in the beginning and 61.6MB in the end (delta: -27.4MB). Peak memory consumption was 223.7kB. Max. memory is 16.1GB. [2021-08-29 22:21:25,952 INFO L158 Benchmark]: Witness Printer took 28.44ms. Allocated memory is still 88.1MB. Free memory was 61.6MB in the beginning and 59.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:21:25,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.6MB in the end (delta: 27.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.53ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.4MB in the beginning and 34.4MB in the end (delta: -12.0MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.31ms. Allocated memory is still 60.8MB. Free memory was 34.4MB in the beginning and 32.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.48ms. Allocated memory is still 60.8MB. Free memory was 32.4MB in the beginning and 31.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 261.96ms. Allocated memory is still 60.8MB. Free memory was 31.1MB in the beginning and 34.5MB in the end (delta: -3.4MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3424.86ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 34.2MB in the beginning and 61.6MB in the end (delta: -27.4MB). Peak memory consumption was 223.7kB. Max. memory is 16.1GB. * Witness Printer took 28.44ms. Allocated memory is still 88.1MB. Free memory was 61.6MB in the beginning and 59.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2197.61ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 7 FixpointIterations, 20 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 73 TotalNumberOfCompositions, 3053 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1919, positive: 1804, positive conditional: 0, positive unconditional: 1804, negative: 115, negative conditional: 0, negative unconditional: 115, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1070, positive: 1025, positive conditional: 0, positive unconditional: 1025, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1070, positive: 1014, positive conditional: 0, positive unconditional: 1014, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 56, positive: 11, positive conditional: 0, positive unconditional: 11, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 87, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 60, negative conditional: 0, negative unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1919, positive: 779, positive conditional: 0, positive unconditional: 779, negative: 70, negative conditional: 0, negative unconditional: 70, unknown: 1070, unknown conditional: 0, unknown unconditional: 1070] , Statistics on independence cache: Total cache size (in pairs): 97, Positive cache size: 82, Positive conditional cache size: 0, Positive unconditional cache size: 82, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15 - 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 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3329.47ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 14.03ms, AutomataDifference: 311.70ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2270.87ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 138.71ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 182 mSDsluCounter, 178 SdHoareTripleChecker+Invalid, 98.62ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 84 mSDtfsCounter, 179 mSolverCounterSat, 5.27ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 68.03ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=1, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 70.42ms AutomataMinimizationTime, 8 MinimizatonAttempts, 96 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.58ms SsaConstructionTime, 163.64ms SatisfiabilityAnalysisTime, 315.28ms InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 22:21:25,983 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...