./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 22:22:18,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 22:22:18,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 22:22:18,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 22:22:18,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 22:22:18,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 22:22:18,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 22:22:18,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 22:22:18,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 22:22:18,954 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 22:22:18,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 22:22:18,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 22:22:18,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 22:22:18,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 22:22:18,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 22:22:18,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 22:22:18,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 22:22:18,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 22:22:18,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 22:22:18,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 22:22:18,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 22:22:18,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 22:22:18,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 22:22:18,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 22:22:18,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 22:22:18,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 22:22:18,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 22:22:18,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 22:22:18,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 22:22:18,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 22:22:18,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 22:22:18,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 22:22:18,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 22:22:18,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 22:22:18,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 22:22:18,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 22:22:18,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 22:22:18,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 22:22:18,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 22:22:18,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 22:22:18,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 22:22:18,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 22:22:19,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 22:22:19,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 22:22:19,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 22:22:19,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 22:22:19,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 22:22:19,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 22:22:19,027 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 22:22:19,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 22:22:19,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 22:22:19,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 22:22:19,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 22:22:19,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 22:22:19,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 22:22:19,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 22:22:19,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 22:22:19,029 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 22:22:19,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 22:22:19,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 22:22:19,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 22:22:19,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 22:22:19,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 22:22:19,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 22:22:19,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:22:19,031 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 22:22:19,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 22:22:19,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 22:22:19,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 22:22:19,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 22:22:19,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 22:22:19,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 22:22:19,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76a5caa3071fd3b7fdb0794a63eaafb12ee9a50e [2021-08-29 22:22:19,335 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 22:22:19,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 22:22:19,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 22:22:19,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 22:22:19,366 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 22:22:19,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2021-08-29 22:22:19,437 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825ea3a12/b7d54b7c8b88471bb3d26058ad51a590/FLAGdf2aa13c5 [2021-08-29 22:22:20,009 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 22:22:20,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_tso.oepc.i [2021-08-29 22:22:20,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825ea3a12/b7d54b7c8b88471bb3d26058ad51a590/FLAGdf2aa13c5 [2021-08-29 22:22:20,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/825ea3a12/b7d54b7c8b88471bb3d26058ad51a590 [2021-08-29 22:22:20,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 22:22:20,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 22:22:20,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 22:22:20,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 22:22:20,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 22:22:20,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@661ece68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20, skipping insertion in model container [2021-08-29 22:22:20,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 22:22:20,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 22:22:20,513 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/safe014_tso.oepc.i[950,963] [2021-08-29 22:22:20,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:22:20,634 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 22:22:20,644 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/safe014_tso.oepc.i[950,963] [2021-08-29 22:22:20,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 22:22:20,700 INFO L208 MainTranslator]: Completed translation [2021-08-29 22:22:20,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20 WrapperNode [2021-08-29 22:22:20,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 22:22:20,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 22:22:20,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 22:22:20,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 22:22:20,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 22:22:20,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 22:22:20,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 22:22:20,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 22:22:20,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 22:22:20,759 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 22:22:20,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 22:22:20,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 22:22:20,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (1/1) ... [2021-08-29 22:22:20,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 22:22:20,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 22:22:20,804 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 22:22:20,813 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 22:22:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 22:22:20,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-08-29 22:22:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 22:22:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-29 22:22:20,842 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-08-29 22:22:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-08-29 22:22:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-08-29 22:22:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-08-29 22:22:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-08-29 22:22:20,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-08-29 22:22:20,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 22:22:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-08-29 22:22:20,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 22:22:20,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 22:22:20,845 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 22:22:21,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 22:22:21,134 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-08-29 22:22:21,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:21 BoogieIcfgContainer [2021-08-29 22:22:21,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 22:22:21,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 22:22:21,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 22:22:21,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 22:22:21,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:22:20" (1/3) ... [2021-08-29 22:22:21,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36663c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:22:21, skipping insertion in model container [2021-08-29 22:22:21,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:22:20" (2/3) ... [2021-08-29 22:22:21,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36663c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:22:21, skipping insertion in model container [2021-08-29 22:22:21,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:21" (3/3) ... [2021-08-29 22:22:21,147 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.oepc.i [2021-08-29 22:22:21,154 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-29 22:22:21,154 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 22:22:21,154 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 22:22:21,155 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-29 22:22:21,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,201 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,204 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,205 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,205 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,206 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,206 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,207 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,208 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,212 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,213 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,214 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,214 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,214 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,215 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,215 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,216 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,216 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,216 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,218 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,223 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,223 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,224 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,224 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,228 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,229 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,229 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,230 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,233 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,233 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,234 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-29 22:22:21,235 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-08-29 22:22:21,288 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 22:22:21,298 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 22:22:21,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-08-29 22:22:21,326 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-08-29 22:22:21,337 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:22:21,341 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 84 transitions, 183 flow [2021-08-29 22:22:21,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2021-08-29 22:22:21,406 INFO L129 PetriNetUnfolder]: 2/81 cut-off events. [2021-08-29 22:22:21,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-08-29 22:22:21,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2021-08-29 22:22:21,414 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2021-08-29 22:22:24,135 INFO L131 LiptonReduction]: Checked pairs total: 2964 [2021-08-29 22:22:24,136 INFO L133 LiptonReduction]: Total number of compositions: 72 [2021-08-29 22:22:24,143 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2021-08-29 22:22:24,170 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,179 INFO L276 IsEmpty]: Start isEmpty. Operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-29 22:22:24,188 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:24,188 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:24,189 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:24,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:24,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1631224648, now seen corresponding path program 1 times [2021-08-29 22:22:24,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:24,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788730828] [2021-08-29 22:22:24,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:24,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:24,477 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 22:22:24,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:24,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788730828] [2021-08-29 22:22:24,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788730828] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:24,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:24,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-08-29 22:22:24,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750485955] [2021-08-29 22:22:24,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 22:22:24,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 22:22:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:24,505 INFO L87 Difference]: Start difference. First operand has 234 states, 233 states have (on average 2.815450643776824) internal successors, (656), 233 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:24,567 INFO L93 Difference]: Finished difference Result 347 states and 920 transitions. [2021-08-29 22:22:24,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 22:22:24,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-29 22:22:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:24,589 INFO L225 Difference]: With dead ends: 347 [2021-08-29 22:22:24,590 INFO L226 Difference]: Without dead ends: 323 [2021-08-29 22:22:24,591 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 22:22:24,596 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.48ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:24,598 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 22.48ms Time] [2021-08-29 22:22:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-08-29 22:22:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 288. [2021-08-29 22:22:24,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 2.7282229965156795) internal successors, (783), 287 states have internal predecessors, (783), 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 22:22:24,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 783 transitions. [2021-08-29 22:22:24,665 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 783 transitions. Word has length 8 [2021-08-29 22:22:24,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:24,666 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 783 transitions. [2021-08-29 22:22:24,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,666 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 783 transitions. [2021-08-29 22:22:24,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:22:24,667 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:24,668 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:24,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 22:22:24,668 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:24,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:24,669 INFO L82 PathProgramCache]: Analyzing trace with hash -192279208, now seen corresponding path program 1 times [2021-08-29 22:22:24,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:24,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842037568] [2021-08-29 22:22:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:24,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:24,743 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 22:22:24,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:24,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842037568] [2021-08-29 22:22:24,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842037568] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:24,744 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:24,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:24,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773243679] [2021-08-29 22:22:24,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:24,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:24,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:24,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:24,747 INFO L87 Difference]: Start difference. First operand 288 states and 783 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:24,777 INFO L93 Difference]: Finished difference Result 304 states and 801 transitions. [2021-08-29 22:22:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:24,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 22:22:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:24,782 INFO L225 Difference]: With dead ends: 304 [2021-08-29 22:22:24,782 INFO L226 Difference]: Without dead ends: 304 [2021-08-29 22:22:24,782 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.37ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:24,783 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.77ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:24,783 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 22 Invalid, 20 Unknown, 0 Unchecked, 0.60ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 20.77ms Time] [2021-08-29 22:22:24,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-08-29 22:22:24,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 254. [2021-08-29 22:22:24,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.727272727272727) internal successors, (690), 253 states have internal predecessors, (690), 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 22:22:24,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 690 transitions. [2021-08-29 22:22:24,799 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 690 transitions. Word has length 9 [2021-08-29 22:22:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:24,799 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 690 transitions. [2021-08-29 22:22:24,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 690 transitions. [2021-08-29 22:22:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 22:22:24,801 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:24,801 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:24,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 22:22:24,801 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:24,802 INFO L82 PathProgramCache]: Analyzing trace with hash -971671350, now seen corresponding path program 1 times [2021-08-29 22:22:24,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:24,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684414685] [2021-08-29 22:22:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:24,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:24,871 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 22:22:24,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:24,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684414685] [2021-08-29 22:22:24,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684414685] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:24,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:24,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:24,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844565165] [2021-08-29 22:22:24,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:24,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:24,873 INFO L87 Difference]: Start difference. First operand 254 states and 690 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:24,907 INFO L93 Difference]: Finished difference Result 289 states and 752 transitions. [2021-08-29 22:22:24,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:24,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 22:22:24,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:24,910 INFO L225 Difference]: With dead ends: 289 [2021-08-29 22:22:24,910 INFO L226 Difference]: Without dead ends: 289 [2021-08-29 22:22:24,910 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.11ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:24,911 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.85ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.37ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:24,912 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 31 Invalid, 30 Unknown, 0 Unchecked, 0.85ms Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 23.37ms Time] [2021-08-29 22:22:24,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-08-29 22:22:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 236. [2021-08-29 22:22:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.6808510638297873) internal successors, (630), 235 states have internal predecessors, (630), 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 22:22:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 630 transitions. [2021-08-29 22:22:24,926 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 630 transitions. Word has length 9 [2021-08-29 22:22:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:24,927 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 630 transitions. [2021-08-29 22:22:24,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 630 transitions. [2021-08-29 22:22:24,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 22:22:24,928 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:24,928 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:24,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 22:22:24,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:24,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1665716038, now seen corresponding path program 1 times [2021-08-29 22:22:24,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:24,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631053580] [2021-08-29 22:22:24,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:24,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:24,994 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 22:22:24,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:24,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631053580] [2021-08-29 22:22:24,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631053580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:24,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:24,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:24,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780720835] [2021-08-29 22:22:24,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:24,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:24,997 INFO L87 Difference]: Start difference. First operand 236 states and 630 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,020 INFO L93 Difference]: Finished difference Result 271 states and 701 transitions. [2021-08-29 22:22:25,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:25,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 22:22:25,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,022 INFO L225 Difference]: With dead ends: 271 [2021-08-29 22:22:25,022 INFO L226 Difference]: Without dead ends: 271 [2021-08-29 22:22:25,023 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.84ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:25,024 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.49ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.42ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,024 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 21 Unknown, 0 Unchecked, 0.49ms Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 17.42ms Time] [2021-08-29 22:22:25,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-08-29 22:22:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 215. [2021-08-29 22:22:25,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 2.6542056074766354) internal successors, (568), 214 states have internal predecessors, (568), 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 22:22:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 568 transitions. [2021-08-29 22:22:25,060 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 568 transitions. Word has length 10 [2021-08-29 22:22:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,060 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 568 transitions. [2021-08-29 22:22:25,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 568 transitions. [2021-08-29 22:22:25,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-29 22:22:25,062 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:25,062 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:25,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 22:22:25,062 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:25,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1072855688, now seen corresponding path program 1 times [2021-08-29 22:22:25,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:25,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581666804] [2021-08-29 22:22:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:25,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:25,117 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 22:22:25,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:25,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581666804] [2021-08-29 22:22:25,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581666804] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:25,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:25,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:25,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103925074] [2021-08-29 22:22:25,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:25,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:25,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:25,124 INFO L87 Difference]: Start difference. First operand 215 states and 568 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 22:22:25,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,156 INFO L93 Difference]: Finished difference Result 266 states and 666 transitions. [2021-08-29 22:22:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:22:25,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 22:22:25,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,158 INFO L225 Difference]: With dead ends: 266 [2021-08-29 22:22:25,158 INFO L226 Difference]: Without dead ends: 122 [2021-08-29 22:22:25,159 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.45ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:25,160 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 45 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.96ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,160 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [6 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 22.96ms Time] [2021-08-29 22:22:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-08-29 22:22:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 114. [2021-08-29 22:22:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.3451327433628317) internal successors, (265), 113 states have internal predecessors, (265), 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 22:22:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 265 transitions. [2021-08-29 22:22:25,165 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 265 transitions. Word has length 11 [2021-08-29 22:22:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,165 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 265 transitions. [2021-08-29 22:22:25,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 22:22:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 265 transitions. [2021-08-29 22:22:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-29 22:22:25,167 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:25,167 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:25,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 22:22:25,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:25,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:25,168 INFO L82 PathProgramCache]: Analyzing trace with hash 88609230, now seen corresponding path program 1 times [2021-08-29 22:22:25,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:25,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276071786] [2021-08-29 22:22:25,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:25,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:25,237 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 22:22:25,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:25,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276071786] [2021-08-29 22:22:25,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276071786] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:25,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:25,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:25,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151875286] [2021-08-29 22:22:25,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:25,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:25,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:25,239 INFO L87 Difference]: Start difference. First operand 114 states and 265 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,270 INFO L93 Difference]: Finished difference Result 116 states and 262 transitions. [2021-08-29 22:22:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:25,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-29 22:22:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,275 INFO L225 Difference]: With dead ends: 116 [2021-08-29 22:22:25,275 INFO L226 Difference]: Without dead ends: 116 [2021-08-29 22:22:25,275 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.40ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:25,277 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.58ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,279 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 24.58ms Time] [2021-08-29 22:22:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-29 22:22:25,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2021-08-29 22:22:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.3106796116504853) internal successors, (238), 103 states have internal predecessors, (238), 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 22:22:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 238 transitions. [2021-08-29 22:22:25,291 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 238 transitions. Word has length 12 [2021-08-29 22:22:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,292 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 238 transitions. [2021-08-29 22:22:25,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,293 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 238 transitions. [2021-08-29 22:22:25,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-08-29 22:22:25,296 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:25,297 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:25,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 22:22:25,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:25,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:25,298 INFO L82 PathProgramCache]: Analyzing trace with hash -733671660, now seen corresponding path program 1 times [2021-08-29 22:22:25,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:25,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543962233] [2021-08-29 22:22:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:25,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:25,379 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 22:22:25,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:25,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543962233] [2021-08-29 22:22:25,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543962233] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:25,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:25,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:25,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978371975] [2021-08-29 22:22:25,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:25,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:25,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:25,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:25,383 INFO L87 Difference]: Start difference. First operand 104 states and 238 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 22:22:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,422 INFO L93 Difference]: Finished difference Result 127 states and 266 transitions. [2021-08-29 22:22:25,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:22:25,423 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 22:22:25,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,424 INFO L225 Difference]: With dead ends: 127 [2021-08-29 22:22:25,424 INFO L226 Difference]: Without dead ends: 87 [2021-08-29 22:22:25,425 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.14ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:25,427 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.98ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,427 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 44 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 25.98ms Time] [2021-08-29 22:22:25,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-08-29 22:22:25,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-08-29 22:22:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.058139534883721) internal successors, (177), 86 states have internal predecessors, (177), 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 22:22:25,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 177 transitions. [2021-08-29 22:22:25,432 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 177 transitions. Word has length 13 [2021-08-29 22:22:25,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,432 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 177 transitions. [2021-08-29 22:22:25,433 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 22:22:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 177 transitions. [2021-08-29 22:22:25,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-29 22:22:25,434 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:25,435 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:25,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 22:22:25,435 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:25,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1393210356, now seen corresponding path program 1 times [2021-08-29 22:22:25,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:25,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480244785] [2021-08-29 22:22:25,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:25,437 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:25,532 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 22:22:25,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:25,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480244785] [2021-08-29 22:22:25,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480244785] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:25,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:25,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:25,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085909764] [2021-08-29 22:22:25,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 22:22:25,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 22:22:25,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:25,536 INFO L87 Difference]: Start difference. First operand 87 states and 177 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,582 INFO L93 Difference]: Finished difference Result 90 states and 168 transitions. [2021-08-29 22:22:25,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 22:22:25,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-08-29 22:22:25,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,583 INFO L225 Difference]: With dead ends: 90 [2021-08-29 22:22:25,583 INFO L226 Difference]: Without dead ends: 65 [2021-08-29 22:22:25,585 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.95ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:25,586 INFO L928 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.15ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,589 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 29 Invalid, 57 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 36.15ms Time] [2021-08-29 22:22:25,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-08-29 22:22:25,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-08-29 22:22:25,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.796875) internal successors, (115), 64 states have internal predecessors, (115), 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 22:22:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 115 transitions. [2021-08-29 22:22:25,593 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 115 transitions. Word has length 14 [2021-08-29 22:22:25,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,593 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 115 transitions. [2021-08-29 22:22:25,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,593 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 115 transitions. [2021-08-29 22:22:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 22:22:25,595 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:25,595 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:25,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 22:22:25,595 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:25,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:25,596 INFO L82 PathProgramCache]: Analyzing trace with hash -239857703, now seen corresponding path program 1 times [2021-08-29 22:22:25,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:25,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796837750] [2021-08-29 22:22:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:25,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:25,687 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 22:22:25,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:25,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796837750] [2021-08-29 22:22:25,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796837750] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:25,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:25,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 22:22:25,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98717610] [2021-08-29 22:22:25,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-29 22:22:25,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:25,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-29 22:22:25,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-29 22:22:25,690 INFO L87 Difference]: Start difference. First operand 65 states and 115 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,745 INFO L93 Difference]: Finished difference Result 62 states and 107 transitions. [2021-08-29 22:22:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-29 22:22:25,746 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 22:22:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,747 INFO L225 Difference]: With dead ends: 62 [2021-08-29 22:22:25,747 INFO L226 Difference]: Without dead ends: 38 [2021-08-29 22:22:25,747 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 17.78ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-29 22:22:25,748 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.24ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.19ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,748 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 27 Invalid, 61 Unknown, 0 Unchecked, 2.24ms Time], IncrementalHoareTripleChecker [11 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 43.19ms Time] [2021-08-29 22:22:25,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-08-29 22:22:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-08-29 22:22:25,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.6756756756756757) internal successors, (62), 37 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2021-08-29 22:22:25,750 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2021-08-29 22:22:25,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,751 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2021-08-29 22:22:25,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 22:22:25,751 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2021-08-29 22:22:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 22:22:25,752 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:25,752 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:25,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 22:22:25,752 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:25,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:25,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1785575576, now seen corresponding path program 1 times [2021-08-29 22:22:25,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:25,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207764530] [2021-08-29 22:22:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:25,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:25,787 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 22:22:25,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:25,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207764530] [2021-08-29 22:22:25,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207764530] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:25,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:25,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 22:22:25,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503318723] [2021-08-29 22:22:25,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:25,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:25,789 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 22:22:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,812 INFO L93 Difference]: Finished difference Result 51 states and 83 transitions. [2021-08-29 22:22:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-29 22:22:25,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-08-29 22:22:25,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,813 INFO L225 Difference]: With dead ends: 51 [2021-08-29 22:22:25,813 INFO L226 Difference]: Without dead ends: 30 [2021-08-29 22:22:25,814 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:25,814 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.56ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,815 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 30 Unknown, 0 Unchecked, 0.35ms Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 17.56ms Time] [2021-08-29 22:22:25,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-08-29 22:22:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-08-29 22:22:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 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 22:22:25,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-08-29 22:22:25,816 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2021-08-29 22:22:25,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,817 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-08-29 22:22:25,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 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 22:22:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2021-08-29 22:22:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-29 22:22:25,818 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 22:22:25,818 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 22:22:25,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 22:22:25,818 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-08-29 22:22:25,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 22:22:25,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1711559992, now seen corresponding path program 2 times [2021-08-29 22:22:25,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 22:22:25,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84290322] [2021-08-29 22:22:25,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 22:22:25,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 22:22:25,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 22:22:25,853 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 22:22:25,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 22:22:25,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84290322] [2021-08-29 22:22:25,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84290322] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 22:22:25,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 22:22:25,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 22:22:25,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565575529] [2021-08-29 22:22:25,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 22:22:25,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 22:22:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 22:22:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 22:22:25,856 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 22:22:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 22:22:25,868 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2021-08-29 22:22:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 22:22:25,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-08-29 22:22:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 22:22:25,869 INFO L225 Difference]: With dead ends: 29 [2021-08-29 22:22:25,869 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 22:22:25,870 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 22:22:25,870 INFO L928 BasicCegarLoop]: 9 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.18ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.12ms IncrementalHoareTripleChecker+Time [2021-08-29 22:22:25,871 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 13 Invalid, 11 Unknown, 0 Unchecked, 0.18ms Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 8.12ms Time] [2021-08-29 22:22:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 22:22:25,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 22:22:25,871 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 22:22:25,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 22:22:25,872 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-08-29 22:22:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 22:22:25,872 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 22:22:25,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 22:22:25,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 22:22:25,873 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 22:22:25,875 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-08-29 22:22:25,875 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-08-29 22:22:25,875 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-08-29 22:22:25,876 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-08-29 22:22:25,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 22:22:25,879 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-29 22:22:25,879 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 22:22:25,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 10:22:25 BasicIcfg [2021-08-29 22:22:25,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 22:22:25,882 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 22:22:25,883 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 22:22:25,883 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 22:22:25,883 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:22:21" (3/4) ... [2021-08-29 22:22:25,886 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 22:22:25,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-08-29 22:22:25,891 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-08-29 22:22:25,892 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-08-29 22:22:25,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-08-29 22:22:25,895 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 22:22:25,896 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:22:25,896 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 22:22:25,921 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 22:22:25,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 22:22:25,922 INFO L158 Benchmark]: Toolchain (without parser) took 5605.81ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 46.9MB in the beginning and 55.8MB in the end (delta: -8.9MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2021-08-29 22:22:25,923 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:22:25,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.38ms. Allocated memory is still 67.1MB. Free memory was 46.7MB in the beginning and 41.3MB in the end (delta: 5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-08-29 22:22:25,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.80ms. Allocated memory is still 67.1MB. Free memory was 41.1MB in the beginning and 39.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 22:22:25,923 INFO L158 Benchmark]: Boogie Preprocessor took 20.60ms. Allocated memory is still 67.1MB. Free memory was 39.3MB in the beginning and 37.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 22:22:25,924 INFO L158 Benchmark]: RCFGBuilder took 379.93ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.8MB in the beginning and 61.1MB in the end (delta: -23.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2021-08-29 22:22:25,924 INFO L158 Benchmark]: TraceAbstraction took 4740.93ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 60.8MB in the beginning and 59.0MB in the end (delta: 1.8MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. [2021-08-29 22:22:25,925 INFO L158 Benchmark]: Witness Printer took 39.39ms. Allocated memory is still 119.5MB. Free memory was 59.0MB in the beginning and 55.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 22:22:25,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 67.1MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.38ms. Allocated memory is still 67.1MB. Free memory was 46.7MB in the beginning and 41.3MB in the end (delta: 5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.80ms. Allocated memory is still 67.1MB. Free memory was 41.1MB in the beginning and 39.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.60ms. Allocated memory is still 67.1MB. Free memory was 39.3MB in the beginning and 37.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 379.93ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 37.8MB in the beginning and 61.1MB in the end (delta: -23.4MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4740.93ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 60.8MB in the beginning and 59.0MB in the end (delta: 1.8MB). Peak memory consumption was 39.7MB. Max. memory is 16.1GB. * Witness Printer took 39.39ms. Allocated memory is still 119.5MB. Free memory was 59.0MB in the beginning and 55.8MB in the end (delta: 3.3MB). 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: 2795.33ms, 92 PlacesBefore, 31 PlacesAfterwards, 84 TransitionsBefore, 21 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 20 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2964 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1538, positive: 1431, positive conditional: 0, positive unconditional: 1431, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 978, positive: 927, positive conditional: 0, positive unconditional: 927, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 978, positive: 912, positive conditional: 0, positive unconditional: 912, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 66, positive: 15, positive conditional: 0, positive unconditional: 15, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 169, positive: 44, positive conditional: 0, positive unconditional: 44, negative: 125, negative conditional: 0, negative unconditional: 125, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1538, positive: 504, positive conditional: 0, positive unconditional: 504, negative: 56, negative conditional: 0, negative unconditional: 56, unknown: 978, unknown conditional: 0, unknown unconditional: 978] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4592.47ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 24.30ms, AutomataDifference: 513.93ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 2877.43ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 262.59ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 219 mSDsluCounter, 279 SdHoareTripleChecker+Invalid, 206.16ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 236 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 301 IncrementalHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 126 mSDtfsCounter, 301 mSolverCounterSat, 11.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 116.65ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=288occurred in iteration=1, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 140.08ms AutomataMinimizationTime, 11 MinimizatonAttempts, 214 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.98ms SsaConstructionTime, 248.46ms SatisfiabilityAnalysisTime, 548.65ms InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 22:22:25,959 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...