./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/bhmr2007.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/bhmr2007.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF --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 07cb9038cdaf0e413365ff784390031a7ba733892c02a00ed18b47b0bbaf3c4d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:42:41,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:42:41,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:42:41,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:42:41,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:42:41,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:42:41,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:42:41,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:42:41,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:42:41,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:42:41,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:42:41,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:42:41,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:42:41,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:42:41,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:42:41,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:42:41,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:42:41,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:42:41,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:42:41,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:42:41,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:42:41,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:42:41,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:42:41,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:42:41,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:42:41,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:42:41,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:42:41,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:42:41,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:42:41,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:42:41,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:42:41,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:42:41,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:42:41,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:42:41,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:42:41,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:42:41,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:42:41,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:42:41,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:42:41,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:42:41,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:42:41,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:42:42,025 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:42:42,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:42:42,026 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:42:42,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:42:42,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:42:42,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:42:42,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:42:42,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:42:42,030 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:42:42,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:42:42,030 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:42:42,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:42:42,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:42:42,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:42:42,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:42:42,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:42:42,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:42:42,033 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:42:42,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:42:42,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:42:42,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:42:42,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:42:42,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:42:42,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:42:42,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:42:42,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:42:42,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:42:42,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:42:42,037 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:42:42,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:42:42,038 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:42:42,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:42:42,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:42:42,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:42:42,040 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 07cb9038cdaf0e413365ff784390031a7ba733892c02a00ed18b47b0bbaf3c4d [2021-11-20 07:42:42,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:42:42,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:42:42,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:42:42,321 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:42:42,322 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:42:42,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/loop-lit/bhmr2007.i [2021-11-20 07:42:42,393 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/data/19f23bfc0/09e78f54a56a4292bd19e885b3272d88/FLAG8c40b8a3c [2021-11-20 07:42:42,874 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:42:42,875 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/sv-benchmarks/c/loop-lit/bhmr2007.i [2021-11-20 07:42:42,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/data/19f23bfc0/09e78f54a56a4292bd19e885b3272d88/FLAG8c40b8a3c [2021-11-20 07:42:43,210 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/data/19f23bfc0/09e78f54a56a4292bd19e885b3272d88 [2021-11-20 07:42:43,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:42:43,215 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:42:43,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:42:43,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:42:43,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:42:43,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77cc0bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43, skipping insertion in model container [2021-11-20 07:42:43,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:42:43,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:42:43,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2021-11-20 07:42:43,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:42:43,444 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:42:43,460 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/sv-benchmarks/c/loop-lit/bhmr2007.i[895,908] [2021-11-20 07:42:43,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:42:43,488 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:42:43,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43 WrapperNode [2021-11-20 07:42:43,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:42:43,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:42:43,491 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:42:43,491 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:42:43,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,506 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,526 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2021-11-20 07:42:43,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:42:43,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:42:43,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:42:43,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:42:43,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:42:43,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:42:43,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:42:43,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:42:43,569 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (1/1) ... [2021-11-20 07:42:43,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:42:43,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:43,604 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:42:43,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:42:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:42:43,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:42:43,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:42:43,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:42:43,721 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:42:43,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:42:43,828 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:42:43,834 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:42:43,834 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:42:43,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:42:43 BoogieIcfgContainer [2021-11-20 07:42:43,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:42:43,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:42:43,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:42:43,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:42:43,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:42:43" (1/3) ... [2021-11-20 07:42:43,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5aeeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:42:43, skipping insertion in model container [2021-11-20 07:42:43,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:42:43" (2/3) ... [2021-11-20 07:42:43,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5aeeef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:42:43, skipping insertion in model container [2021-11-20 07:42:43,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:42:43" (3/3) ... [2021-11-20 07:42:43,845 INFO L111 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2021-11-20 07:42:43,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:42:43,851 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:42:43,900 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:42:43,908 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, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-11-20 07:42:43,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:42:43,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:42:43,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:43,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:43,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:43,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:43,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1807304968, now seen corresponding path program 1 times [2021-11-20 07:42:43,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:43,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58478144] [2021-11-20 07:42:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:43,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:44,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:44,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58478144] [2021-11-20 07:42:44,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58478144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:44,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:42:44,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:42:44,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393457867] [2021-11-20 07:42:44,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:44,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:42:44,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:42:44,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:42:44,133 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:44,147 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-20 07:42:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:42:44,149 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:42:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:44,156 INFO L225 Difference]: With dead ends: 22 [2021-11-20 07:42:44,156 INFO L226 Difference]: Without dead ends: 10 [2021-11-20 07:42:44,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:42:44,163 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:44,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:42:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-20 07:42:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-20 07:42:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2021-11-20 07:42:44,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-11-20 07:42:44,195 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2021-11-20 07:42:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:44,196 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-11-20 07:42:44,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:44,197 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-11-20 07:42:44,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:42:44,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:44,197 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:44,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:42:44,198 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:44,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:44,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1806977267, now seen corresponding path program 1 times [2021-11-20 07:42:44,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:44,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098872609] [2021-11-20 07:42:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:44,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:44,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:44,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:44,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098872609] [2021-11-20 07:42:44,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098872609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:42:44,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:42:44,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:42:44,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425329039] [2021-11-20 07:42:44,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:42:44,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:42:44,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:44,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:42:44,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:42:44,488 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:44,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:44,625 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-11-20 07:42:44,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:42:44,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-20 07:42:44,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:44,628 INFO L225 Difference]: With dead ends: 16 [2021-11-20 07:42:44,628 INFO L226 Difference]: Without dead ends: 12 [2021-11-20 07:42:44,629 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:42:44,631 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:44,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:42:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-20 07:42:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2021-11-20 07:42:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 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) [2021-11-20 07:42:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-20 07:42:44,650 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2021-11-20 07:42:44,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:44,650 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-20 07:42:44,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-20 07:42:44,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 07:42:44,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:44,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:44,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:42:44,652 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:44,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash 78673311, now seen corresponding path program 1 times [2021-11-20 07:42:44,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:44,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324476513] [2021-11-20 07:42:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:44,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:44,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:44,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324476513] [2021-11-20 07:42:44,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324476513] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:44,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881981123] [2021-11-20 07:42:44,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:44,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:44,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:44,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:44,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:42:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:44,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-20 07:42:45,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:45,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:42:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:45,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881981123] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:42:45,744 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:42:45,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2021-11-20 07:42:45,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401204451] [2021-11-20 07:42:45,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:42:45,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 07:42:45,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 07:42:45,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:42:45,748 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-11-20 07:42:46,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:46,152 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2021-11-20 07:42:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:42:46,154 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 [2021-11-20 07:42:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:46,155 INFO L225 Difference]: With dead ends: 26 [2021-11-20 07:42:46,155 INFO L226 Difference]: Without dead ends: 20 [2021-11-20 07:42:46,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2021-11-20 07:42:46,158 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:46,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:42:46,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-20 07:42:46,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-11-20 07:42:46,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:42:46,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-20 07:42:46,166 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2021-11-20 07:42:46,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:46,166 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-20 07:42:46,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2021-11-20 07:42:46,167 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-20 07:42:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 07:42:46,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:42:46,168 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:42:46,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:42:46,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:46,387 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:42:46,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:42:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash 923522933, now seen corresponding path program 1 times [2021-11-20 07:42:46,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:42:46,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248704971] [2021-11-20 07:42:46,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:46,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:42:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:46,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:42:46,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248704971] [2021-11-20 07:42:46,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248704971] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:42:46,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200300090] [2021-11-20 07:42:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:42:46,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:46,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:42:46,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:42:46,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:42:46,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:42:46,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 07:42:46,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:42:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:42:47,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:42:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:42:47,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200300090] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:42:47,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:42:47,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 21 [2021-11-20 07:42:47,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423562700] [2021-11-20 07:42:47,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:42:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-20 07:42:47,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:42:47,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-20 07:42:47,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:42:47,443 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 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) [2021-11-20 07:42:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:42:48,051 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-11-20 07:42:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:42:48,051 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 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 [2021-11-20 07:42:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:42:48,052 INFO L225 Difference]: With dead ends: 25 [2021-11-20 07:42:48,052 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 07:42:48,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2021-11-20 07:42:48,055 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:42:48,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:42:48,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 07:42:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 07:42:48,057 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) [2021-11-20 07:42:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:42:48,057 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-20 07:42:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:42:48,057 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:42:48,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 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) [2021-11-20 07:42:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:42:48,058 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 07:42:48,065 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 07:42:48,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-20 07:42:48,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:42:48,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 07:42:48,363 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 07:42:48,363 INFO L858 garLoopResultBuilder]: For program point L29(lines 29 35) no Hoare annotation was computed. [2021-11-20 07:42:48,363 INFO L858 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2021-11-20 07:42:48,363 INFO L858 garLoopResultBuilder]: For program point L29-2(lines 29 35) no Hoare annotation was computed. [2021-11-20 07:42:48,363 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-20 07:42:48,364 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 07:42:48,364 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 07:42:48,364 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 07:42:48,364 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (+ |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse1 (* 3 |ULTIMATE.start_main_~i~0#1|))) (and (< .cse0 (+ (* 3 |ULTIMATE.start_main_~n~0#1|) 1)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2021-11-20 07:42:48,364 INFO L858 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-11-20 07:42:48,365 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-20 07:42:48,365 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-20 07:42:48,365 INFO L861 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-11-20 07:42:48,365 INFO L861 garLoopResultBuilder]: At program point L39(lines 24 40) the Hoare annotation is: true [2021-11-20 07:42:48,370 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-20 07:42:48,372 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 07:42:48,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:42:48 BoogieIcfgContainer [2021-11-20 07:42:48,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 07:42:48,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:42:48,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:42:48,390 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:42:48,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:42:43" (3/4) ... [2021-11-20 07:42:48,399 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 07:42:48,412 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-20 07:42:48,412 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-20 07:42:48,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 07:42:48,413 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 07:42:48,456 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 07:42:48,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:42:48,459 INFO L158 Benchmark]: Toolchain (without parser) took 5244.12ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.2MB in the beginning and 81.2MB in the end (delta: -20.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:42:48,467 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 96.5MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:42:48,467 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.49ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 73.0MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:42:48,469 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.58ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:42:48,469 INFO L158 Benchmark]: Boogie Preprocessor took 38.31ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 972.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:42:48,470 INFO L158 Benchmark]: RCFGBuilder took 269.25ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 61.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:42:48,471 INFO L158 Benchmark]: TraceAbstraction took 4550.75ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.1MB in the beginning and 84.3MB in the end (delta: -23.1MB). Peak memory consumption was 307.9kB. Max. memory is 16.1GB. [2021-11-20 07:42:48,472 INFO L158 Benchmark]: Witness Printer took 68.75ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 81.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:42:48,475 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 96.5MB. Free memory is still 77.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.49ms. Allocated memory is still 96.5MB. Free memory was 61.0MB in the beginning and 73.0MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.58ms. Allocated memory is still 96.5MB. Free memory was 73.0MB in the beginning and 71.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.31ms. Allocated memory is still 96.5MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 972.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.25ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 61.7MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4550.75ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 61.1MB in the beginning and 84.3MB in the end (delta: -23.1MB). Peak memory consumption was 307.9kB. Max. memory is 16.1GB. * Witness Printer took 68.75ms. Allocated memory is still 117.4MB. Free memory was 84.3MB in the beginning and 81.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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 CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 279 IncrementalHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 30 mSDtfsCounter, 279 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, InterpolantAutomatonStates: 43, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 26 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 232 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 807 SizeOfPredicates, 12 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1/18 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 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (a + b < 3 * n + 1 && 3 * i <= a + b) && a + b <= 3 * i - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-20 07:42:48,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_964b8c8b-20c8-47f0-88d9-7c2228a65ec9/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE