./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d652d9f3fdf88a4a943ccd902b0488ac0eab24b5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:22:29,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:22:29,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:22:29,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:22:29,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:22:29,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:22:29,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:22:29,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:22:29,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:22:29,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:22:29,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:22:29,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:22:29,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:22:29,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:22:29,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:22:29,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:22:29,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:22:29,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:22:29,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:22:29,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:22:29,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:22:29,843 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:22:29,844 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:22:29,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:22:29,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:22:29,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:22:29,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:22:29,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:22:29,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:22:29,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:22:29,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:22:29,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:22:29,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:22:29,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:22:29,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:22:29,861 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:22:29,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:22:29,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:22:29,862 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:22:29,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:22:29,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:22:29,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:22:29,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:22:29,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:22:29,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:22:29,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:22:29,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:22:29,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:22:29,916 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:22:29,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:22:29,917 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:22:29,917 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:22:29,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:22:29,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:22:29,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:22:29,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:22:29,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:22:29,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:22:29,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:22:29,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:22:29,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:22:29,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:22:29,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:22:29,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:22:29,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:22:29,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:22:29,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:22:29,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:22:29,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:22:29,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:22:29,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:22:29,921 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:22:29,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d652d9f3fdf88a4a943ccd902b0488ac0eab24b5 [2021-08-29 22:22:30,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:22:30,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:22:30,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:22:30,289 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:22:30,290 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:22:30,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2021-08-29 22:22:30,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f739c71/48e732ba179f4ed1a70ac50864624063/FLAG8285a6695 [2021-08-29 22:22:30,875 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:22:30,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc.i [2021-08-29 22:22:30,890 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f739c71/48e732ba179f4ed1a70ac50864624063/FLAG8285a6695 [2021-08-29 22:22:31,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0f739c71/48e732ba179f4ed1a70ac50864624063 [2021-08-29 22:22:31,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:22:31,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:22:31,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:22:31,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:22:31,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:22:31,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@283158a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31, skipping insertion in model container [2021-08-29 22:22:31,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:22:31,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:22:31,600 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/safe016_pso.oepc.i[950,963] [2021-08-29 22:22:31,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:22:31,796 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:22:31,806 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/safe016_pso.oepc.i[950,963] [2021-08-29 22:22:31,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:22:31,892 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:22:31,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31 WrapperNode [2021-08-29 22:22:31,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:22:31,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:22:31,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:22:31,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:22:31,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:22:31,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:22:31,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:22:31,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:22:31,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:31,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:32,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:32,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:22:32,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:22:32,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:22:32,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:22:32,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (1/1) ... [2021-08-29 22:22:32,016 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:22:32,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:22:32,046 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 22:22:32,071 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 22:22:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:22:32,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:22:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:22:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:22:32,095 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:22:32,095 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:22:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:22:32,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:22:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:22:32,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:22:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2021-08-29 22:22:32,096 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2021-08-29 22:22:32,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:22:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:22:32,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:22:32,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:22:32,098 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 22:22:32,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:22:32,324 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:22:32,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:32 BoogieIcfgContainer [2021-08-29 22:22:32,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:22:32,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:22:32,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:22:32,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:22:32,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:22:31" (1/3) ... [2021-08-29 22:22:32,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a866b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:22:32, skipping insertion in model container [2021-08-29 22:22:32,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:31" (2/3) ... [2021-08-29 22:22:32,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a866b8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:22:32, skipping insertion in model container [2021-08-29 22:22:32,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:32" (3/3) ... [2021-08-29 22:22:32,334 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc.i [2021-08-29 22:22:32,345 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:22:32,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:22:32,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:22:32,346 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:22:32,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,396 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,397 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,398 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,398 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,399 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,401 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,403 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,403 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,404 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,404 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,406 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,407 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,407 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,408 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,408 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,408 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,409 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,410 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,410 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,411 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,412 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,412 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,412 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,413 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,413 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,413 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,414 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,414 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,414 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,415 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,420 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,420 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,420 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,421 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,426 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,426 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,426 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,426 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,428 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,428 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,429 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,429 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,433 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,433 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:32,436 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:22:32,482 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:22:32,490 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 22:22:32,490 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-29 22:22:32,513 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:22:32,525 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 97 transitions, 214 flow [2021-08-29 22:22:32,527 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 97 transitions, 214 flow [2021-08-29 22:22:32,529 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 214 flow [2021-08-29 22:22:32,616 INFO L129 PetriNetUnfolder]: 2/93 cut-off events. [2021-08-29 22:22:32,616 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:22:32,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2021-08-29 22:22:32,624 INFO L116 LiptonReduction]: Number of co-enabled transitions 2114 [2021-08-29 22:22:35,498 INFO L131 LiptonReduction]: Checked pairs total: 3624 [2021-08-29 22:22:35,498 INFO L133 LiptonReduction]: Total number of compositions: 85 [2021-08-29 22:22:35,506 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 25 transitions, 70 flow [2021-08-29 22:22:35,557 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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 22:22:35,560 INFO L276 IsEmpty]: Start isEmpty. Operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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 22:22:35,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:22:35,567 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:35,567 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:35,568 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:35,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1516833325, now seen corresponding path program 1 times [2021-08-29 22:22:35,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:35,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191471060] [2021-08-29 22:22:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:35,590 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:35,857 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 22:22:35,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:35,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191471060] [2021-08-29 22:22:35,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191471060] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:35,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:35,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:22:35,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567439826] [2021-08-29 22:22:35,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:22:35,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:22:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:35,899 INFO L87 Difference]: Start difference. First operand has 562 states, 561 states have (on average 3.3689839572192515) internal successors, (1890), 561 states have internal predecessors, (1890), 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 5.0) internal successors, (10), 2 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 22:22:35,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:35,970 INFO L93 Difference]: Finished difference Result 925 states and 2943 transitions. [2021-08-29 22:22:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:22:35,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 22:22:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:35,993 INFO L225 Difference]: With dead ends: 925 [2021-08-29 22:22:35,993 INFO L226 Difference]: Without dead ends: 861 [2021-08-29 22:22:35,994 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.87ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:35,997 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.00ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:35,998 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 20 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 22.00ms Time] [2021-08-29 22:22:36,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2021-08-29 22:22:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 761. [2021-08-29 22:22:36,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 760 states have (on average 3.232894736842105) internal successors, (2457), 760 states have internal predecessors, (2457), 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 22:22:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 2457 transitions. [2021-08-29 22:22:36,101 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 2457 transitions. Word has length 10 [2021-08-29 22:22:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:36,102 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 2457 transitions. [2021-08-29 22:22:36,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 2 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 22:22:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 2457 transitions. [2021-08-29 22:22:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:22:36,105 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:36,105 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:36,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:22:36,106 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:36,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:36,107 INFO L82 PathProgramCache]: Analyzing trace with hash -452224952, now seen corresponding path program 1 times [2021-08-29 22:22:36,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:36,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821659029] [2021-08-29 22:22:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:36,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:36,197 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 22:22:36,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:36,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821659029] [2021-08-29 22:22:36,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821659029] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:36,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:36,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:36,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248055552] [2021-08-29 22:22:36,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:36,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:36,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:36,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,201 INFO L87 Difference]: Start difference. First operand 761 states and 2457 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 22:22:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:36,239 INFO L93 Difference]: Finished difference Result 816 states and 2551 transitions. [2021-08-29 22:22:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-08-29 22:22:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:36,246 INFO L225 Difference]: With dead ends: 816 [2021-08-29 22:22:36,246 INFO L226 Difference]: Without dead ends: 816 [2021-08-29 22:22:36,247 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.70ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,248 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.87ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.31ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:36,249 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 29 Invalid, 27 Unknown, 0 Unchecked, 0.87ms Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 23.31ms Time] [2021-08-29 22:22:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-08-29 22:22:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 712. [2021-08-29 22:22:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 3.1856540084388185) internal successors, (2265), 711 states have internal predecessors, (2265), 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 22:22:36,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2265 transitions. [2021-08-29 22:22:36,283 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2265 transitions. Word has length 11 [2021-08-29 22:22:36,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:36,283 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 2265 transitions. [2021-08-29 22:22:36,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 22:22:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2265 transitions. [2021-08-29 22:22:36,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:22:36,285 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:36,286 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:36,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:22:36,286 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:36,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:36,287 INFO L82 PathProgramCache]: Analyzing trace with hash 223678993, now seen corresponding path program 1 times [2021-08-29 22:22:36,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:36,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828239852] [2021-08-29 22:22:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:36,288 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:36,339 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 22:22:36,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:36,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828239852] [2021-08-29 22:22:36,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828239852] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:36,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:36,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:22:36,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637834266] [2021-08-29 22:22:36,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:22:36,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:36,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:22:36,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:36,346 INFO L87 Difference]: Start difference. First operand 712 states and 2265 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 22:22:36,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:36,365 INFO L93 Difference]: Finished difference Result 684 states and 2155 transitions. [2021-08-29 22:22:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:22:36,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-08-29 22:22:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:36,370 INFO L225 Difference]: With dead ends: 684 [2021-08-29 22:22:36,371 INFO L226 Difference]: Without dead ends: 684 [2021-08-29 22:22:36,371 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:36,374 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.81ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:36,375 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 11 Unknown, 0 Unchecked, 0.29ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 10.81ms Time] [2021-08-29 22:22:36,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-08-29 22:22:36,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 636. [2021-08-29 22:22:36,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 3.1669291338582677) internal successors, (2011), 635 states have internal predecessors, (2011), 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 22:22:36,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 2011 transitions. [2021-08-29 22:22:36,407 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 2011 transitions. Word has length 11 [2021-08-29 22:22:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:36,408 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 2011 transitions. [2021-08-29 22:22:36,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 22:22:36,408 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 2011 transitions. [2021-08-29 22:22:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:22:36,409 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:36,410 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:36,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:22:36,410 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:36,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:36,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1655887236, now seen corresponding path program 1 times [2021-08-29 22:22:36,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:36,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684162130] [2021-08-29 22:22:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:36,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:36,447 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 22:22:36,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:36,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684162130] [2021-08-29 22:22:36,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684162130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:36,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:36,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:22:36,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981622167] [2021-08-29 22:22:36,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:22:36,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:22:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:36,450 INFO L87 Difference]: Start difference. First operand 636 states and 2011 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 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 22:22:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:36,466 INFO L93 Difference]: Finished difference Result 622 states and 1956 transitions. [2021-08-29 22:22:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:22:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 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 22:22:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:36,471 INFO L225 Difference]: With dead ends: 622 [2021-08-29 22:22:36,471 INFO L226 Difference]: Without dead ends: 622 [2021-08-29 22:22:36,471 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:36,472 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.49ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:36,473 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 21 Invalid, 13 Unknown, 0 Unchecked, 0.29ms Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 9.49ms Time] [2021-08-29 22:22:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-08-29 22:22:36,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 598. [2021-08-29 22:22:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 597 states have (on average 3.1390284757118927) internal successors, (1874), 597 states have internal predecessors, (1874), 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 22:22:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 1874 transitions. [2021-08-29 22:22:36,492 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 1874 transitions. Word has length 12 [2021-08-29 22:22:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:36,492 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 1874 transitions. [2021-08-29 22:22:36,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 2 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 22:22:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 1874 transitions. [2021-08-29 22:22:36,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:22:36,494 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:36,494 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:36,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:22:36,495 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:36,495 INFO L82 PathProgramCache]: Analyzing trace with hash 207108536, now seen corresponding path program 1 times [2021-08-29 22:22:36,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:36,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066737939] [2021-08-29 22:22:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:36,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:36,545 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 22:22:36,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:36,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066737939] [2021-08-29 22:22:36,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066737939] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:36,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:36,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:36,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454309458] [2021-08-29 22:22:36,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:36,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,547 INFO L87 Difference]: Start difference. First operand 598 states and 1874 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 22:22:36,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:36,588 INFO L93 Difference]: Finished difference Result 718 states and 2210 transitions. [2021-08-29 22:22:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:36,589 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 22:22:36,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:36,593 INFO L225 Difference]: With dead ends: 718 [2021-08-29 22:22:36,593 INFO L226 Difference]: Without dead ends: 718 [2021-08-29 22:22:36,594 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.89ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,595 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.03ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.97ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:36,595 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 30 Invalid, 28 Unknown, 0 Unchecked, 1.03ms Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 27.97ms Time] [2021-08-29 22:22:36,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-08-29 22:22:36,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 550. [2021-08-29 22:22:36,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 3.122040072859745) internal successors, (1714), 549 states have internal predecessors, (1714), 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 22:22:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 1714 transitions. [2021-08-29 22:22:36,614 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 1714 transitions. Word has length 13 [2021-08-29 22:22:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:36,615 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 1714 transitions. [2021-08-29 22:22:36,615 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 22:22:36,615 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 1714 transitions. [2021-08-29 22:22:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:22:36,617 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:36,617 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:36,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:22:36,617 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash -529626581, now seen corresponding path program 1 times [2021-08-29 22:22:36,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:36,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700719047] [2021-08-29 22:22:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:36,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:36,683 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 22:22:36,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:36,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700719047] [2021-08-29 22:22:36,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700719047] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:36,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:36,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:36,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393465451] [2021-08-29 22:22:36,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:36,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:36,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:36,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,687 INFO L87 Difference]: Start difference. First operand 550 states and 1714 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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 22:22:36,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:36,726 INFO L93 Difference]: Finished difference Result 786 states and 2348 transitions. [2021-08-29 22:22:36,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:36,727 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 22:22:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:36,731 INFO L225 Difference]: With dead ends: 786 [2021-08-29 22:22:36,732 INFO L226 Difference]: Without dead ends: 650 [2021-08-29 22:22:36,732 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.84ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,736 INFO L928 BasicCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.06ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.62ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:36,736 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 41 Invalid, 37 Unknown, 0 Unchecked, 1.06ms Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 26.62ms Time] [2021-08-29 22:22:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-08-29 22:22:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 514. [2021-08-29 22:22:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.990253411306043) internal successors, (1534), 513 states have internal predecessors, (1534), 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 22:22:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1534 transitions. [2021-08-29 22:22:36,756 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1534 transitions. Word has length 14 [2021-08-29 22:22:36,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:36,756 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1534 transitions. [2021-08-29 22:22:36,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 22:22:36,757 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1534 transitions. [2021-08-29 22:22:36,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:22:36,758 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:36,759 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:36,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:22:36,759 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:36,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:36,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1916634915, now seen corresponding path program 1 times [2021-08-29 22:22:36,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:36,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986998467] [2021-08-29 22:22:36,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:36,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:36,822 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 22:22:36,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:36,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986998467] [2021-08-29 22:22:36,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986998467] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:36,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:36,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:36,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116688048] [2021-08-29 22:22:36,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:36,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,827 INFO L87 Difference]: Start difference. First operand 514 states and 1534 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:22:36,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:36,858 INFO L93 Difference]: Finished difference Result 730 states and 2128 transitions. [2021-08-29 22:22:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:36,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:22:36,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:36,861 INFO L225 Difference]: With dead ends: 730 [2021-08-29 22:22:36,861 INFO L226 Difference]: Without dead ends: 370 [2021-08-29 22:22:36,861 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.87ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:36,862 INFO L928 BasicCegarLoop]: 13 mSDtfsCounter, 23 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.65ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:36,862 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 30 Invalid, 20 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 14.65ms Time] [2021-08-29 22:22:36,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-08-29 22:22:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-08-29 22:22:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 2.948509485094851) internal successors, (1088), 369 states have internal predecessors, (1088), 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 22:22:36,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1088 transitions. [2021-08-29 22:22:36,874 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1088 transitions. Word has length 14 [2021-08-29 22:22:36,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:36,875 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 1088 transitions. [2021-08-29 22:22:36,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:22:36,875 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1088 transitions. [2021-08-29 22:22:36,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:22:36,876 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:36,876 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:36,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:22:36,879 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:36,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:36,880 INFO L82 PathProgramCache]: Analyzing trace with hash 2125390127, now seen corresponding path program 2 times [2021-08-29 22:22:36,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:36,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054140100] [2021-08-29 22:22:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:36,881 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:36,954 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 22:22:36,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:36,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054140100] [2021-08-29 22:22:36,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054140100] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:36,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:36,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:36,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348945404] [2021-08-29 22:22:36,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:36,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:36,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:36,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:36,957 INFO L87 Difference]: Start difference. First operand 370 states and 1088 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:22:36,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:36,986 INFO L93 Difference]: Finished difference Result 462 states and 1266 transitions. [2021-08-29 22:22:36,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:36,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:22:36,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:36,989 INFO L225 Difference]: With dead ends: 462 [2021-08-29 22:22:36,989 INFO L226 Difference]: Without dead ends: 336 [2021-08-29 22:22:36,990 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.92ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:36,990 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 26 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.20ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:36,991 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 24 Invalid, 30 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 20.20ms Time] [2021-08-29 22:22:36,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-08-29 22:22:36,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2021-08-29 22:22:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 2.7701492537313435) internal successors, (928), 335 states have internal predecessors, (928), 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 22:22:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 928 transitions. [2021-08-29 22:22:37,000 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 928 transitions. Word has length 14 [2021-08-29 22:22:37,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:37,000 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 928 transitions. [2021-08-29 22:22:37,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 22:22:37,001 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 928 transitions. [2021-08-29 22:22:37,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:22:37,007 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:37,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:37,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 22:22:37,008 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:37,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:37,009 INFO L82 PathProgramCache]: Analyzing trace with hash -708246639, now seen corresponding path program 1 times [2021-08-29 22:22:37,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:37,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715960323] [2021-08-29 22:22:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:37,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:37,046 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 22:22:37,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:37,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715960323] [2021-08-29 22:22:37,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715960323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:37,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:37,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:37,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713295852] [2021-08-29 22:22:37,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:37,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:37,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:37,049 INFO L87 Difference]: Start difference. First operand 336 states and 928 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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 22:22:37,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:37,093 INFO L93 Difference]: Finished difference Result 365 states and 928 transitions. [2021-08-29 22:22:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:22:37,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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 22:22:37,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:37,095 INFO L225 Difference]: With dead ends: 365 [2021-08-29 22:22:37,095 INFO L226 Difference]: Without dead ends: 267 [2021-08-29 22:22:37,096 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 13.13ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:22:37,097 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 53 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.62ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.24ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:37,097 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 29 Invalid, 46 Unknown, 0 Unchecked, 0.62ms Time], IncrementalHoareTripleChecker [14 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 28.24ms Time] [2021-08-29 22:22:37,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-08-29 22:22:37,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-08-29 22:22:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 2.511278195488722) internal successors, (668), 266 states have internal predecessors, (668), 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 22:22:37,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 668 transitions. [2021-08-29 22:22:37,105 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 668 transitions. Word has length 15 [2021-08-29 22:22:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:37,106 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 668 transitions. [2021-08-29 22:22:37,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 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 22:22:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 668 transitions. [2021-08-29 22:22:37,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 22:22:37,107 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:37,107 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:37,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 22:22:37,108 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:37,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:37,108 INFO L82 PathProgramCache]: Analyzing trace with hash -866967464, now seen corresponding path program 1 times [2021-08-29 22:22:37,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:37,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012880522] [2021-08-29 22:22:37,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:37,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:37,171 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 22:22:37,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:37,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012880522] [2021-08-29 22:22:37,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012880522] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:37,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:37,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:22:37,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47641005] [2021-08-29 22:22:37,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:22:37,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:37,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:22:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:37,174 INFO L87 Difference]: Start difference. First operand 267 states and 668 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:37,239 INFO L93 Difference]: Finished difference Result 261 states and 625 transitions. [2021-08-29 22:22:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:22:37,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 22:22:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:37,241 INFO L225 Difference]: With dead ends: 261 [2021-08-29 22:22:37,242 INFO L226 Difference]: Without dead ends: 207 [2021-08-29 22:22:37,242 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 21.76ms TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-08-29 22:22:37,242 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 89 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.54ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.80ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:37,243 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 34 Invalid, 64 Unknown, 0 Unchecked, 2.54ms Time], IncrementalHoareTripleChecker [25 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 45.80ms Time] [2021-08-29 22:22:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-08-29 22:22:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-08-29 22:22:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.4174757281553396) internal successors, (498), 206 states have internal predecessors, (498), 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 22:22:37,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 498 transitions. [2021-08-29 22:22:37,250 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 498 transitions. Word has length 16 [2021-08-29 22:22:37,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:37,251 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 498 transitions. [2021-08-29 22:22:37,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:37,252 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 498 transitions. [2021-08-29 22:22:37,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 22:22:37,253 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:37,253 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:37,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 22:22:37,253 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash -566733258, now seen corresponding path program 1 times [2021-08-29 22:22:37,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:37,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546911698] [2021-08-29 22:22:37,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:37,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:37,298 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 22:22:37,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:37,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546911698] [2021-08-29 22:22:37,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546911698] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:37,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:37,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:37,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133656728] [2021-08-29 22:22:37,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:22:37,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:22:37,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:37,301 INFO L87 Difference]: Start difference. First operand 207 states and 498 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 22:22:37,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:37,315 INFO L93 Difference]: Finished difference Result 264 states and 619 transitions. [2021-08-29 22:22:37,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:22:37,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-08-29 22:22:37,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:37,317 INFO L225 Difference]: With dead ends: 264 [2021-08-29 22:22:37,317 INFO L226 Difference]: Without dead ends: 200 [2021-08-29 22:22:37,317 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:37,317 INFO L928 BasicCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.50ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:37,318 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 28 Invalid, 18 Unknown, 0 Unchecked, 0.23ms Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 11.50ms Time] [2021-08-29 22:22:37,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-08-29 22:22:37,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2021-08-29 22:22:37,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.3553299492385786) internal successors, (464), 197 states have internal predecessors, (464), 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 22:22:37,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 464 transitions. [2021-08-29 22:22:37,324 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 464 transitions. Word has length 18 [2021-08-29 22:22:37,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:37,325 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 464 transitions. [2021-08-29 22:22:37,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 22:22:37,325 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 464 transitions. [2021-08-29 22:22:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-29 22:22:37,326 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:37,326 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:37,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 22:22:37,327 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:37,327 INFO L82 PathProgramCache]: Analyzing trace with hash -587655050, now seen corresponding path program 2 times [2021-08-29 22:22:37,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:37,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112857196] [2021-08-29 22:22:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:37,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:37,391 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 22:22:37,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:37,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112857196] [2021-08-29 22:22:37,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112857196] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:37,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:37,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 22:22:37,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659960267] [2021-08-29 22:22:37,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-29 22:22:37,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-29 22:22:37,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:22:37,394 INFO L87 Difference]: Start difference. First operand 198 states and 464 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 22:22:37,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:37,474 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2021-08-29 22:22:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:22:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-08-29 22:22:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:37,475 INFO L225 Difference]: With dead ends: 193 [2021-08-29 22:22:37,476 INFO L226 Difference]: Without dead ends: 94 [2021-08-29 22:22:37,476 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 40.15ms TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2021-08-29 22:22:37,477 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 90 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.22ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:37,477 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 27 Invalid, 72 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [34 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 46.22ms Time] [2021-08-29 22:22:37,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-29 22:22:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-08-29 22:22:37,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.2795698924731185) internal successors, (212), 93 states have internal predecessors, (212), 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 22:22:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 212 transitions. [2021-08-29 22:22:37,481 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 212 transitions. Word has length 18 [2021-08-29 22:22:37,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:37,482 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 212 transitions. [2021-08-29 22:22:37,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 22:22:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 212 transitions. [2021-08-29 22:22:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-29 22:22:37,483 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:37,483 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:37,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 22:22:37,483 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2021-08-29 22:22:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:37,484 INFO L82 PathProgramCache]: Analyzing trace with hash -192977298, now seen corresponding path program 1 times [2021-08-29 22:22:37,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:37,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689145348] [2021-08-29 22:22:37,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:37,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:37,559 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 22:22:37,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:37,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689145348] [2021-08-29 22:22:37,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689145348] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:37,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:37,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:37,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636275617] [2021-08-29 22:22:37,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:37,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:37,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:37,562 INFO L87 Difference]: Start difference. First operand 94 states and 212 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 22:22:37,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:37,579 INFO L93 Difference]: Finished difference Result 93 states and 211 transitions. [2021-08-29 22:22:37,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:37,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-08-29 22:22:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:37,580 INFO L225 Difference]: With dead ends: 93 [2021-08-29 22:22:37,580 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:22:37,580 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.06ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:37,581 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.22ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.61ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:37,581 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 19 Invalid, 13 Unknown, 0 Unchecked, 0.22ms Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 10.61ms Time] [2021-08-29 22:22:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:22:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:22:37,583 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 22:22:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:22:37,583 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-08-29 22:22:37,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:37,584 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:22:37,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 22:22:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:22:37,584 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:22:37,587 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2021-08-29 22:22:37,588 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2021-08-29 22:22:37,588 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2021-08-29 22:22:37,588 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2021-08-29 22:22:37,588 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2021-08-29 22:22:37,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 22:22:37,594 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:22:37,594 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:22:37,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:22:37 BasicIcfg [2021-08-29 22:22:37,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:22:37,598 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:22:37,598 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:22:37,598 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:22:37,599 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:32" (3/4) ... [2021-08-29 22:22:37,602 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:22:37,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:22:37,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:22:37,608 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:22:37,609 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2021-08-29 22:22:37,614 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-08-29 22:22:37,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:22:37,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:22:37,615 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:22:37,648 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:22:37,648 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:22:37,649 INFO L158 Benchmark]: Toolchain (without parser) took 6286.51ms. Allocated memory was 52.4MB in the beginning and 125.8MB in the end (delta: 73.4MB). Free memory was 28.1MB in the beginning and 80.1MB in the end (delta: -52.0MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-08-29 22:22:37,649 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:22:37,649 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.52ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 27.9MB in the beginning and 44.7MB in the end (delta: -16.8MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-08-29 22:22:37,650 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.17ms. Allocated memory is still 71.3MB. Free memory was 44.7MB in the beginning and 42.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:22:37,650 INFO L158 Benchmark]: Boogie Preprocessor took 50.26ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:22:37,651 INFO L158 Benchmark]: RCFGBuilder took 319.05ms. Allocated memory is still 71.3MB. Free memory was 41.2MB in the beginning and 44.7MB in the end (delta: -3.6MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2021-08-29 22:22:37,651 INFO L158 Benchmark]: TraceAbstraction took 5269.06ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 44.2MB in the beginning and 83.3MB in the end (delta: -39.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-08-29 22:22:37,651 INFO L158 Benchmark]: Witness Printer took 50.19ms. Allocated memory is still 125.8MB. Free memory was 83.3MB in the beginning and 80.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 22:22:37,653 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 52.4MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 37.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 530.52ms. Allocated memory was 52.4MB in the beginning and 71.3MB in the end (delta: 18.9MB). Free memory was 27.9MB in the beginning and 44.7MB in the end (delta: -16.8MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.17ms. Allocated memory is still 71.3MB. Free memory was 44.7MB in the beginning and 42.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.26ms. Allocated memory is still 71.3MB. Free memory was 42.7MB in the beginning and 41.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 319.05ms. Allocated memory is still 71.3MB. Free memory was 41.2MB in the beginning and 44.7MB in the end (delta: -3.6MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5269.06ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 44.2MB in the beginning and 83.3MB in the end (delta: -39.1MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. * Witness Printer took 50.19ms. Allocated memory is still 125.8MB. Free memory was 83.3MB in the beginning and 80.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2971.21ms, 108 PlacesBefore, 38 PlacesAfterwards, 97 TransitionsBefore, 25 TransitionsAfterwards, 2114 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 3624 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2033, positive: 1939, positive conditional: 0, positive unconditional: 1939, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1363, positive: 1316, positive conditional: 0, positive unconditional: 1316, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1363, positive: 1310, positive conditional: 0, positive unconditional: 1310, negative: 53, negative conditional: 0, negative unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 53, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 106, positive: 14, positive conditional: 0, positive unconditional: 14, negative: 92, negative conditional: 0, negative unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2033, positive: 623, positive conditional: 0, positive unconditional: 623, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 1363, unknown conditional: 0, unknown unconditional: 1363] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13 - 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 9 procedures, 126 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 5111.64ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 29.70ms, AutomataDifference: 650.53ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 3066.41ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 395 SdHoareTripleChecker+Valid, 297.44ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 395 mSDsluCounter, 357 SdHoareTripleChecker+Invalid, 235.89ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 266 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 303 IncrementalHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 169 mSDtfsCounter, 303 mSolverCounterSat, 11.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 144.74ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=761occurred in iteration=1, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 257.73ms AutomataMinimizationTime, 13 MinimizatonAttempts, 582 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.79ms SsaConstructionTime, 199.01ms SatisfiabilityAnalysisTime, 628.62ms InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 22:22:37,707 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...