./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c --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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:52:36,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:52:36,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:52:36,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:52:36,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:52:36,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:52:36,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:52:36,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:52:36,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:52:36,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:52:36,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:52:36,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:52:36,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:52:36,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:52:36,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:52:36,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:52:36,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:52:36,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:52:36,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:52:36,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:52:36,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:52:36,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:52:36,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:52:36,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:52:36,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:52:36,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:52:36,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:52:36,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:52:36,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:52:36,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:52:36,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:52:36,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:52:36,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:52:36,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:52:36,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:52:36,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:52:36,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:52:36,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:52:36,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:52:36,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:52:36,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:52:36,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:52:36,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:52:36,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:52:36,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:52:36,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:52:36,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:52:36,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:52:36,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:52:36,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:52:36,986 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:52:36,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:52:36,987 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:52:36,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:52:36,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:52:36,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:52:36,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:52:36,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:52:36,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:52:36,990 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:52:36,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:52:36,991 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:52:36,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:52:36,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:52:36,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:52:36,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:52:36,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:36,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:52:36,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:52:36,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:52:36,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:52:36,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:52:36,994 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:52:36,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:52:36,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:52:36,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:52:36,995 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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 [2021-11-20 05:52:37,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:52:37,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:52:37,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:52:37,399 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:52:37,400 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:52:37,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/Muller_Kahan.c [2021-11-20 05:52:37,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/902a2039a/0dc00e4e16234d29b75ed8d153e6f2a7/FLAGb052535fa [2021-11-20 05:52:38,156 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:52:38,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/sv-benchmarks/c/float-benchs/Muller_Kahan.c [2021-11-20 05:52:38,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/902a2039a/0dc00e4e16234d29b75ed8d153e6f2a7/FLAGb052535fa [2021-11-20 05:52:38,510 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/902a2039a/0dc00e4e16234d29b75ed8d153e6f2a7 [2021-11-20 05:52:38,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:52:38,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:52:38,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:38,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:52:38,525 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:52:38,526 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:38,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c24f3be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38, skipping insertion in model container [2021-11-20 05:52:38,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:38,538 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:52:38,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:52:38,846 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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2021-11-20 05:52:38,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:38,886 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:52:38,903 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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2021-11-20 05:52:38,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:38,929 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:52:38,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38 WrapperNode [2021-11-20 05:52:38,930 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:38,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:38,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:52:38,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:52:38,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:38,953 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:38,977 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2021-11-20 05:52:38,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:38,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:52:38,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:52:38,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:52:38,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:38,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:38,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:38,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:39,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:39,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:39,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:39,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:52:39,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:52:39,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:52:39,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:52:39,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (1/1) ... [2021-11-20 05:52:39,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:39,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:52:39,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:52:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:52:39,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:52:39,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:52:39,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:52:39,228 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:52:39,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:52:39,392 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:52:39,400 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:52:39,405 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:52:39,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:39 BoogieIcfgContainer [2021-11-20 05:52:39,416 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:52:39,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:52:39,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:52:39,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:52:39,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:52:38" (1/3) ... [2021-11-20 05:52:39,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aebd077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:39, skipping insertion in model container [2021-11-20 05:52:39,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:38" (2/3) ... [2021-11-20 05:52:39,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aebd077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:39, skipping insertion in model container [2021-11-20 05:52:39,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:39" (3/3) ... [2021-11-20 05:52:39,430 INFO L111 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c [2021-11-20 05:52:39,439 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:52:39,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:52:39,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:52:39,533 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 05:52:39,533 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:52:39,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) [2021-11-20 05:52:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 05:52:39,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:39,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 05:52:39,582 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:39,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:39,590 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-11-20 05:52:39,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:39,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335451270] [2021-11-20 05:52:39,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:39,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:39,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:39,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:39,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335451270] [2021-11-20 05:52:39,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335451270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:39,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:39,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:52:39,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414916020] [2021-11-20 05:52:39,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:39,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:52:39,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:39,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:52:39,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:39,883 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:39,911 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-20 05:52:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:39,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-20 05:52:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:39,923 INFO L225 Difference]: With dead ends: 22 [2021-11-20 05:52:39,938 INFO L226 Difference]: Without dead ends: 10 [2021-11-20 05:52:39,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:39,947 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:39,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:39,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-20 05:52:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-20 05:52:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-11-20 05:52:40,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-20 05:52:40,002 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-20 05:52:40,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:40,003 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-20 05:52:40,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:52:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-20 05:52:40,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:52:40,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:40,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:40,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:52:40,005 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:40,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:40,006 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-11-20 05:52:40,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:40,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633744681] [2021-11-20 05:52:40,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:40,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:40,063 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 05:52:40,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:40,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633744681] [2021-11-20 05:52:40,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633744681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:40,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340324998] [2021-11-20 05:52:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:40,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:40,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:40,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:40,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:52:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:40,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:52:40,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:40,294 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 05:52:40,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:40,379 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 05:52:40,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340324998] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:40,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:52:40,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-20 05:52:40,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262122799] [2021-11-20 05:52:40,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:40,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:52:40,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:52:40,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:40,386 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-20 05:52:40,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:40,424 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-20 05:52:40,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:52:40,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 8 [2021-11-20 05:52:40,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:40,426 INFO L225 Difference]: With dead ends: 19 [2021-11-20 05:52:40,426 INFO L226 Difference]: Without dead ends: 15 [2021-11-20 05:52:40,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:52:40,429 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:40,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:52:40,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-20 05:52:40,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-20 05:52:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 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) [2021-11-20 05:52:40,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-20 05:52:40,449 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-20 05:52:40,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:40,450 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-20 05:52:40,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2021-11-20 05:52:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-20 05:52:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 05:52:40,451 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:40,451 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:40,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:40,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:40,653 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:40,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1745754443, now seen corresponding path program 2 times [2021-11-20 05:52:40,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:40,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247465903] [2021-11-20 05:52:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:40,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:40,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247465903] [2021-11-20 05:52:40,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247465903] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429800570] [2021-11-20 05:52:40,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:52:40,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:40,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:40,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:40,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:52:40,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:52:40,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:40,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:52:40,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:40,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:41,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429800570] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:41,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:52:41,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-11-20 05:52:41,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151674973] [2021-11-20 05:52:41,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:41,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:52:41,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:41,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:52:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:52:41,165 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 05:52:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:41,251 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-20 05:52:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:52:41,252 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 [2021-11-20 05:52:41,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:41,254 INFO L225 Difference]: With dead ends: 31 [2021-11-20 05:52:41,254 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 05:52:41,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:52:41,260 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:41,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:52:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 05:52:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-20 05:52:41,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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 05:52:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-20 05:52:41,275 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2021-11-20 05:52:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:41,276 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-20 05:52:41,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 05:52:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-20 05:52:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 05:52:41,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:41,279 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:41,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:41,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:41,491 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:41,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash -95702975, now seen corresponding path program 3 times [2021-11-20 05:52:41,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:41,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991263212] [2021-11-20 05:52:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:41,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:41,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991263212] [2021-11-20 05:52:41,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991263212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194514724] [2021-11-20 05:52:41,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:52:41,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:41,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:41,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:41,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:52:41,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-20 05:52:41,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:41,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 05:52:41,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:42,033 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:42,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:42,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194514724] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:42,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:52:42,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-11-20 05:52:42,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847498106] [2021-11-20 05:52:42,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:42,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 05:52:42,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:42,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 05:52:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:52:42,469 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 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 05:52:42,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:42,613 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2021-11-20 05:52:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 05:52:42,614 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 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 26 [2021-11-20 05:52:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:42,619 INFO L225 Difference]: With dead ends: 55 [2021-11-20 05:52:42,619 INFO L226 Difference]: Without dead ends: 51 [2021-11-20 05:52:42,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:52:42,627 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 33 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:42,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 22 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:52:42,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-20 05:52:42,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-20 05:52:42,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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 05:52:42,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2021-11-20 05:52:42,659 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2021-11-20 05:52:42,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:42,660 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2021-11-20 05:52:42,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.04) internal successors, (51), 25 states have internal predecessors, (51), 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 05:52:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2021-11-20 05:52:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:52:42,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:42,673 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:42,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:42,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:42,891 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:42,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:42,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1293970777, now seen corresponding path program 4 times [2021-11-20 05:52:42,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:42,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170727183] [2021-11-20 05:52:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:42,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:43,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:43,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170727183] [2021-11-20 05:52:43,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170727183] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:43,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767789631] [2021-11-20 05:52:43,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:52:43,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:43,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:43,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:43,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:52:43,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:52:43,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:43,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:52:43,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:43,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:45,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767789631] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:45,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:52:45,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-11-20 05:52:45,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777727416] [2021-11-20 05:52:45,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:45,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-20 05:52:45,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:45,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-20 05:52:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 05:52:45,138 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 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 05:52:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:45,352 INFO L93 Difference]: Finished difference Result 103 states and 126 transitions. [2021-11-20 05:52:45,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 05:52:45,353 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 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 50 [2021-11-20 05:52:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:45,360 INFO L225 Difference]: With dead ends: 103 [2021-11-20 05:52:45,361 INFO L226 Difference]: Without dead ends: 99 [2021-11-20 05:52:45,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-20 05:52:45,365 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:45,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 22 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:52:45,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-20 05:52:45,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-20 05:52:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.010204081632653) internal successors, (99), 98 states have internal predecessors, (99), 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 05:52:45,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-11-20 05:52:45,395 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 50 [2021-11-20 05:52:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:45,396 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-11-20 05:52:45,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.020408163265306) internal successors, (99), 49 states have internal predecessors, (99), 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 05:52:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-11-20 05:52:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-20 05:52:45,403 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:45,403 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:45,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:45,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:45,619 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash -675115127, now seen corresponding path program 5 times [2021-11-20 05:52:45,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:45,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297540893] [2021-11-20 05:52:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:45,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:47,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:47,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:47,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297540893] [2021-11-20 05:52:47,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297540893] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:47,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371362847] [2021-11-20 05:52:47,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:52:47,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:47,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:47,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:47,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:52:47,334 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-20 05:52:47,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:47,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-20 05:52:47,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:47,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:47,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:51,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371362847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:51,151 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:52:51,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2021-11-20 05:52:51,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935698113] [2021-11-20 05:52:51,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:51,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-20 05:52:51,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:51,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-20 05:52:51,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-11-20 05:52:51,161 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 97 states have internal predecessors, (195), 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 05:52:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:51,617 INFO L93 Difference]: Finished difference Result 199 states and 246 transitions. [2021-11-20 05:52:51,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-20 05:52:51,618 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 97 states have internal predecessors, (195), 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 98 [2021-11-20 05:52:51,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:51,627 INFO L225 Difference]: With dead ends: 199 [2021-11-20 05:52:51,628 INFO L226 Difference]: Without dead ends: 195 [2021-11-20 05:52:51,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2021-11-20 05:52:51,641 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 141 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:51,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 22 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:52:51,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-20 05:52:51,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-20 05:52:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.0051546391752577) internal successors, (195), 194 states have internal predecessors, (195), 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 05:52:51,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 195 transitions. [2021-11-20 05:52:51,687 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 195 transitions. Word has length 98 [2021-11-20 05:52:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:51,687 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 195 transitions. [2021-11-20 05:52:51,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0103092783505154) internal successors, (195), 97 states have internal predecessors, (195), 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 05:52:51,688 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 195 transitions. [2021-11-20 05:52:51,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-20 05:52:51,692 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:51,692 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:51,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:51,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:51,893 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:51,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1064733719, now seen corresponding path program 6 times [2021-11-20 05:52:51,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:51,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294936220] [2021-11-20 05:52:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:51,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:56,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:56,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294936220] [2021-11-20 05:52:56,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294936220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:52:56,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131244349] [2021-11-20 05:52:56,098 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 05:52:56,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:52:56,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:56,111 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:52:56,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:52:56,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-11-20 05:52:56,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:52:56,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-20 05:52:56,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:52:57,166 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:57,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:52:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8836 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:52:58,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131244349] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:52:58,375 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:52:58,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 103 [2021-11-20 05:52:58,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860080044] [2021-11-20 05:52:58,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:52:58,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2021-11-20 05:52:58,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:58,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-11-20 05:52:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-11-20 05:52:58,385 INFO L87 Difference]: Start difference. First operand 195 states and 195 transitions. Second operand has 103 states, 103 states have (on average 2.029126213592233) internal successors, (209), 103 states have internal predecessors, (209), 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 05:52:58,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:58,760 INFO L93 Difference]: Finished difference Result 211 states and 216 transitions. [2021-11-20 05:52:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-20 05:52:58,761 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.029126213592233) internal successors, (209), 103 states have internal predecessors, (209), 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 194 [2021-11-20 05:52:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:58,768 INFO L225 Difference]: With dead ends: 211 [2021-11-20 05:52:58,768 INFO L226 Difference]: Without dead ends: 207 [2021-11-20 05:52:58,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 381 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2021-11-20 05:52:58,775 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 100 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:58,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 22 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:52:58,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-20 05:52:58,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-11-20 05:52:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.0048543689320388) internal successors, (207), 206 states have internal predecessors, (207), 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 05:52:58,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2021-11-20 05:52:58,811 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 194 [2021-11-20 05:52:58,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:58,813 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2021-11-20 05:52:58,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.029126213592233) internal successors, (209), 103 states have internal predecessors, (209), 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 05:52:58,813 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2021-11-20 05:52:58,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-20 05:52:58,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:58,821 INFO L514 BasicCegarLoop]: trace histogram [100, 100, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:58,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:52:59,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 05:52:59,035 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:59,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1785393291, now seen corresponding path program 7 times [2021-11-20 05:52:59,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:59,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574845846] [2021-11-20 05:52:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:59,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:52:59,117 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:52:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:52:59,294 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:52:59,294 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:52:59,295 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:52:59,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:52:59,302 INFO L732 BasicCegarLoop]: Path program histogram: [7, 1] [2021-11-20 05:52:59,306 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:52:59,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:52:59 BoogieIcfgContainer [2021-11-20 05:52:59,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:52:59,520 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:52:59,520 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:52:59,521 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:52:59,521 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:39" (3/4) ... [2021-11-20 05:52:59,530 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:52:59,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:52:59,531 INFO L158 Benchmark]: Toolchain (without parser) took 21013.82ms. Allocated memory was 98.6MB in the beginning and 148.9MB in the end (delta: 50.3MB). Free memory was 62.7MB in the beginning and 97.6MB in the end (delta: -35.0MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-11-20 05:52:59,531 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 98.6MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:52:59,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.28ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 74.9MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:52:59,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.58ms. Allocated memory is still 98.6MB. Free memory was 74.9MB in the beginning and 73.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:52:59,532 INFO L158 Benchmark]: Boogie Preprocessor took 44.20ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 72.5MB in the end (delta: 938.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:52:59,533 INFO L158 Benchmark]: RCFGBuilder took 392.80ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 63.8MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:52:59,534 INFO L158 Benchmark]: TraceAbstraction took 20101.04ms. Allocated memory was 98.6MB in the beginning and 148.9MB in the end (delta: 50.3MB). Free memory was 63.2MB in the beginning and 97.6MB in the end (delta: -34.4MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. [2021-11-20 05:52:59,534 INFO L158 Benchmark]: Witness Printer took 9.86ms. Allocated memory is still 148.9MB. Free memory is still 97.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:52:59,538 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 98.6MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.28ms. Allocated memory is still 98.6MB. Free memory was 62.5MB in the beginning and 74.9MB in the end (delta: -12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.58ms. Allocated memory is still 98.6MB. Free memory was 74.9MB in the beginning and 73.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.20ms. Allocated memory is still 98.6MB. Free memory was 73.4MB in the beginning and 72.5MB in the end (delta: 938.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 392.80ms. Allocated memory is still 98.6MB. Free memory was 72.5MB in the beginning and 63.8MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20101.04ms. Allocated memory was 98.6MB in the beginning and 148.9MB in the end (delta: 50.3MB). Free memory was 63.2MB in the beginning and 97.6MB in the end (delta: -34.4MB). Peak memory consumption was 76.5MB. Max. memory is 16.1GB. * Witness Printer took 9.86ms. Allocated memory is still 148.9MB. Free memory is still 97.6MB. There was no memory consumed. 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 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L16] double x0, x1, x2; [L17] int i; [L19] x0 = 11. / 2. [L20] x1 = 61. / 11. [L21] i = 0 VAL [i=0] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=0, x0=188, x1=112, x2=112] [L21] i++ VAL [i=1, x0=188, x1=112, x2=112] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=1, x0=112, x1=122, x2=122] [L21] i++ VAL [i=2, x0=112, x1=122, x2=122] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=2, x0=122, x1=192, x2=192] [L21] i++ VAL [i=3, x0=122, x1=192, x2=192] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=3, x0=192, x1=133, x2=133] [L21] i++ VAL [i=4, x0=192, x1=133, x2=133] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=4, x0=133, x1=141, x2=141] [L21] i++ VAL [i=5, x0=133, x1=141, x2=141] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=5, x0=141, x1=145, x2=145] [L21] i++ VAL [i=6, x0=141, x1=145, x2=145] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=6, x0=145, x1=155, x2=155] [L21] i++ VAL [i=7, x0=145, x1=155, x2=155] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=7, x0=155, x1=198, x2=198] [L21] i++ VAL [i=8, x0=155, x1=198, x2=198] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=8, x0=198, x1=178, x2=178] [L21] i++ VAL [i=9, x0=198, x1=178, x2=178] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=9, x0=178, x1=200, x2=200] [L21] i++ VAL [i=10, x0=178, x1=200, x2=200] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=10, x0=200, x1=172, x2=172] [L21] i++ VAL [i=11, x0=200, x1=172, x2=172] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=11, x0=172, x1=149, x2=149] [L21] i++ VAL [i=12, x0=172, x1=149, x2=149] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=12, x0=149, x1=194, x2=194] [L21] i++ VAL [i=13, x0=149, x1=194, x2=194] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=13, x0=194, x1=130, x2=130] [L21] i++ VAL [i=14, x0=194, x1=130, x2=130] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=14, x0=130, x1=173, x2=173] [L21] i++ VAL [i=15, x0=130, x1=173, x2=173] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=15, x0=173, x1=121, x2=121] [L21] i++ VAL [i=16, x0=173, x1=121, x2=121] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=16, x0=121, x1=143, x2=143] [L21] i++ VAL [i=17, x0=121, x1=143, x2=143] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=17, x0=143, x1=165, x2=165] [L21] i++ VAL [i=18, x0=143, x1=165, x2=165] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=18, x0=165, x1=193, x2=193] [L21] i++ VAL [i=19, x0=165, x1=193, x2=193] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=19, x0=193, x1=156, x2=156] [L21] i++ VAL [i=20, x0=193, x1=156, x2=156] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=20, x0=156, x1=168, x2=168] [L21] i++ VAL [i=21, x0=156, x1=168, x2=168] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=21, x0=168, x1=151, x2=151] [L21] i++ VAL [i=22, x0=168, x1=151, x2=151] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=22, x0=151, x1=134, x2=134] [L21] i++ VAL [i=23, x0=151, x1=134, x2=134] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=23, x0=134, x1=147, x2=147] [L21] i++ VAL [i=24, x0=134, x1=147, x2=147] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=24, x0=147, x1=190, x2=190] [L21] i++ VAL [i=25, x0=147, x1=190, x2=190] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=25, x0=190, x1=164, x2=164] [L21] i++ VAL [i=26, x0=190, x1=164, x2=164] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=26, x0=164, x1=138, x2=138] [L21] i++ VAL [i=27, x0=164, x1=138, x2=138] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=27, x0=138, x1=179, x2=179] [L21] i++ VAL [i=28, x0=138, x1=179, x2=179] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=28, x0=179, x1=144, x2=144] [L21] i++ VAL [i=29, x0=179, x1=144, x2=144] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=29, x0=144, x1=115, x2=115] [L21] i++ VAL [i=30, x0=144, x1=115, x2=115] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=30, x0=115, x1=119, x2=119] [L21] i++ VAL [i=31, x0=115, x1=119, x2=119] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=31, x0=119, x1=150, x2=150] [L21] i++ VAL [i=32, x0=119, x1=150, x2=150] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=32, x0=150, x1=196, x2=196] [L21] i++ VAL [i=33, x0=150, x1=196, x2=196] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=33, x0=196, x1=136, x2=136] [L21] i++ VAL [i=34, x0=196, x1=136, x2=136] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=34, x0=136, x1=105, x2=105] [L21] i++ VAL [i=35, x0=136, x1=105, x2=105] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=35, x0=105, x1=185, x2=185] [L21] i++ VAL [i=36, x0=105, x1=185, x2=185] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=36, x0=185, x1=102, x2=102] [L21] i++ VAL [i=37, x0=185, x1=102, x2=102] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=37, x0=102, x1=174, x2=174] [L21] i++ VAL [i=38, x0=102, x1=174, x2=174] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=38, x0=174, x1=120, x2=120] [L21] i++ VAL [i=39, x0=174, x1=120, x2=120] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=39, x0=120, x1=152, x2=152] [L21] i++ VAL [i=40, x0=120, x1=152, x2=152] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=40, x0=152, x1=176, x2=176] [L21] i++ VAL [i=41, x0=152, x1=176, x2=176] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=41, x0=176, x1=111, x2=111] [L21] i++ VAL [i=42, x0=176, x1=111, x2=111] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=42, x0=111, x1=127, x2=127] [L21] i++ VAL [i=43, x0=111, x1=127, x2=127] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=43, x0=127, x1=184, x2=184] [L21] i++ VAL [i=44, x0=127, x1=184, x2=184] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=44, x0=184, x1=124, x2=124] [L21] i++ VAL [i=45, x0=184, x1=124, x2=124] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=45, x0=124, x1=117, x2=117] [L21] i++ VAL [i=46, x0=124, x1=117, x2=117] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=46, x0=117, x1=201, x2=201] [L21] i++ VAL [i=47, x0=117, x1=201, x2=201] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=47, x0=201, x1=142, x2=142] [L21] i++ VAL [i=48, x0=201, x1=142, x2=142] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=48, x0=142, x1=180, x2=180] [L21] i++ VAL [i=49, x0=142, x1=180, x2=180] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=49, x0=180, x1=146, x2=146] [L21] i++ VAL [i=50, x0=180, x1=146, x2=146] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=50, x0=146, x1=103, x2=103] [L21] i++ VAL [i=51, x0=146, x1=103, x2=103] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=51, x0=103, x1=170, x2=170] [L21] i++ VAL [i=52, x0=103, x1=170, x2=170] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=52, x0=170, x1=118, x2=118] [L21] i++ VAL [i=53, x0=170, x1=118, x2=118] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=53, x0=118, x1=189, x2=189] [L21] i++ VAL [i=54, x0=118, x1=189, x2=189] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=54, x0=189, x1=125, x2=125] [L21] i++ VAL [i=55, x0=189, x1=125, x2=125] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=55, x0=125, x1=187, x2=187] [L21] i++ VAL [i=56, x0=125, x1=187, x2=187] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=56, x0=187, x1=123, x2=123] [L21] i++ VAL [i=57, x0=187, x1=123, x2=123] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=57, x0=123, x1=135, x2=135] [L21] i++ VAL [i=58, x0=123, x1=135, x2=135] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=58, x0=135, x1=114, x2=114] [L21] i++ VAL [i=59, x0=135, x1=114, x2=114] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=59, x0=114, x1=162, x2=162] [L21] i++ VAL [i=60, x0=114, x1=162, x2=162] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=60, x0=162, x1=195, x2=195] [L21] i++ VAL [i=61, x0=162, x1=195, x2=195] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=61, x0=195, x1=154, x2=154] [L21] i++ VAL [i=62, x0=195, x1=154, x2=154] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=62, x0=154, x1=139, x2=139] [L21] i++ VAL [i=63, x0=154, x1=139, x2=139] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=63, x0=139, x1=169, x2=169] [L21] i++ VAL [i=64, x0=139, x1=169, x2=169] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=64, x0=169, x1=181, x2=181] [L21] i++ VAL [i=65, x0=169, x1=181, x2=181] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=65, x0=181, x1=186, x2=186] [L21] i++ VAL [i=66, x0=181, x1=186, x2=186] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=66, x0=186, x1=166, x2=166] [L21] i++ VAL [i=67, x0=186, x1=166, x2=166] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=67, x0=166, x1=157, x2=157] [L21] i++ VAL [i=68, x0=166, x1=157, x2=157] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=68, x0=157, x1=137, x2=137] [L21] i++ VAL [i=69, x0=157, x1=137, x2=137] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=69, x0=137, x1=129, x2=129] [L21] i++ VAL [i=70, x0=137, x1=129, x2=129] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=70, x0=129, x1=175, x2=175] [L21] i++ VAL [i=71, x0=129, x1=175, x2=175] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=71, x0=175, x1=197, x2=197] [L21] i++ VAL [i=72, x0=175, x1=197, x2=197] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=72, x0=197, x1=101, x2=101] [L21] i++ VAL [i=73, x0=197, x1=101, x2=101] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=73, x0=101, x1=148, x2=148] [L21] i++ VAL [i=74, x0=101, x1=148, x2=148] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=74, x0=148, x1=106, x2=106] [L21] i++ VAL [i=75, x0=148, x1=106, x2=106] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=75, x0=106, x1=161, x2=161] [L21] i++ VAL [i=76, x0=106, x1=161, x2=161] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=76, x0=161, x1=167, x2=167] [L21] i++ VAL [i=77, x0=161, x1=167, x2=167] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=77, x0=167, x1=171, x2=171] [L21] i++ VAL [i=78, x0=167, x1=171, x2=171] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=78, x0=171, x1=113, x2=113] [L21] i++ VAL [i=79, x0=171, x1=113, x2=113] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=79, x0=113, x1=109, x2=109] [L21] i++ VAL [i=80, x0=113, x1=109, x2=109] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=80, x0=109, x1=140, x2=140] [L21] i++ VAL [i=81, x0=109, x1=140, x2=140] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=81, x0=140, x1=199, x2=199] [L21] i++ VAL [i=82, x0=140, x1=199, x2=199] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=82, x0=199, x1=182, x2=182] [L21] i++ VAL [i=83, x0=199, x1=182, x2=182] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=83, x0=182, x1=131, x2=131] [L21] i++ VAL [i=84, x0=182, x1=131, x2=131] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=84, x0=131, x1=177, x2=177] [L21] i++ VAL [i=85, x0=131, x1=177, x2=177] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=85, x0=177, x1=110, x2=110] [L21] i++ VAL [i=86, x0=177, x1=110, x2=110] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=86, x0=110, x1=159, x2=159] [L21] i++ VAL [i=87, x0=110, x1=159, x2=159] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=87, x0=159, x1=160, x2=160] [L21] i++ VAL [i=88, x0=159, x1=160, x2=160] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=88, x0=160, x1=116, x2=116] [L21] i++ VAL [i=89, x0=160, x1=116, x2=116] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=89, x0=116, x1=128, x2=128] [L21] i++ VAL [i=90, x0=116, x1=128, x2=128] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=90, x0=128, x1=132, x2=132] [L21] i++ VAL [i=91, x0=128, x1=132, x2=132] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=91, x0=132, x1=183, x2=183] [L21] i++ VAL [i=92, x0=132, x1=183, x2=183] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=92, x0=183, x1=126, x2=126] [L21] i++ VAL [i=93, x0=183, x1=126, x2=126] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=93, x0=126, x1=107, x2=107] [L21] i++ VAL [i=94, x0=126, x1=107, x2=107] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=94, x0=107, x1=104, x2=104] [L21] i++ VAL [i=95, x0=107, x1=104, x2=104] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=95, x0=104, x1=108, x2=108] [L21] i++ VAL [i=96, x0=104, x1=108, x2=108] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=96, x0=108, x1=158, x2=158] [L21] i++ VAL [i=97, x0=108, x1=158, x2=158] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=97, x0=158, x1=191, x2=191] [L21] i++ VAL [i=98, x0=158, x1=191, x2=191] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=98, x0=191, x1=153, x2=153] [L21] i++ VAL [i=99, x0=191, x1=153, x2=153] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 VAL [i=99, x0=153, x1=163, x2=163] [L21] i++ VAL [i=100, x0=153, x1=163, x2=163] [L21] COND FALSE !(i < 100) VAL [i=100, x0=153, x1=163, x2=163] [L27] CALL __VERIFIER_assert(x0 >= 99. && x0 <= 101.) [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L12] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.8s, OverallIterations: 8, TraceHistogramMax: 100, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 335 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 335 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 96 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 591 IncrementalHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 46 mSDtfsCounter, 591 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 966 GetRequests, 682 SyntacticMatches, 1 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 10.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=207occurred in iteration=7, InterpolantAutomatonStates: 291, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 14.8s InterpolantComputationTime, 992 NumberOfCodeBlocks, 992 NumberOfCodeBlocksAsserted, 166 NumberOfCheckSat, 1157 ConstructedInterpolants, 0 QuantifiedInterpolants, 3319 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1449 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/34659 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:52:59,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:53:02,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:53:02,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:53:02,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:53:02,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:53:02,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:53:02,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:53:02,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:53:02,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:53:02,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:53:02,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:53:02,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:53:02,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:53:02,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:53:02,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:53:02,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:53:02,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:53:02,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:53:02,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:53:02,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:53:02,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:53:02,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:53:02,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:53:02,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:53:02,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:53:02,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:53:02,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:53:02,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:53:02,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:53:02,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:53:02,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:53:02,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:53:02,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:53:02,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:53:02,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:53:02,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:53:02,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:53:02,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:53:02,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:53:02,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:53:02,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:53:02,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 05:53:02,815 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:53:02,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:53:02,816 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:53:02,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:53:02,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:53:02,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:53:02,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:53:02,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:53:02,820 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:53:02,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:53:02,822 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:53:02,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:53:02,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:53:02,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:53:02,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:53:02,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:53:02,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:53:02,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:53:02,825 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:53:02,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:53:02,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:53:02,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:53:02,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:53:02,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:53:02,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:53:02,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:53:02,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:02,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:53:02,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:53:02,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:53:02,828 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:53:02,828 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:53:02,829 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:53:02,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:53:02,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:53:02,830 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:53:02,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:53:02,830 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 [2021-11-20 05:53:03,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:53:03,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:53:03,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:53:03,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:53:03,379 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:53:03,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/Muller_Kahan.c [2021-11-20 05:53:03,485 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/04a64b77c/10fb7afcc40d4b5fb9a51c00eac815ae/FLAG89aada327 [2021-11-20 05:53:04,140 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:53:04,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/sv-benchmarks/c/float-benchs/Muller_Kahan.c [2021-11-20 05:53:04,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/04a64b77c/10fb7afcc40d4b5fb9a51c00eac815ae/FLAG89aada327 [2021-11-20 05:53:04,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/data/04a64b77c/10fb7afcc40d4b5fb9a51c00eac815ae [2021-11-20 05:53:04,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:53:04,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:53:04,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:04,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:53:04,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:53:04,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7288a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04, skipping insertion in model container [2021-11-20 05:53:04,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:53:04,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:53:04,769 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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2021-11-20 05:53:04,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:04,803 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:53:04,820 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_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2021-11-20 05:53:04,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:53:04,843 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:53:04,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04 WrapperNode [2021-11-20 05:53:04,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:53:04,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:04,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:53:04,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:53:04,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,936 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2021-11-20 05:53:04,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:53:04,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:53:04,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:53:04,960 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:53:04,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:04,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:53:04,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:53:04,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:53:04,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:53:04,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (1/1) ... [2021-11-20 05:53:05,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:53:05,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:05,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:53:05,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:53:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:53:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:53:05,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:53:05,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:53:05,215 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:53:05,217 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:53:08,005 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:53:08,013 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:53:08,013 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:53:08,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:08 BoogieIcfgContainer [2021-11-20 05:53:08,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:53:08,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:53:08,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:53:08,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:53:08,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:53:04" (1/3) ... [2021-11-20 05:53:08,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689d0957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:08, skipping insertion in model container [2021-11-20 05:53:08,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:53:04" (2/3) ... [2021-11-20 05:53:08,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@689d0957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:53:08, skipping insertion in model container [2021-11-20 05:53:08,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:53:08" (3/3) ... [2021-11-20 05:53:08,026 INFO L111 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c [2021-11-20 05:53:08,033 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:53:08,033 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:53:08,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:53:08,104 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 05:53:08,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:53:08,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) [2021-11-20 05:53:08,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 05:53:08,126 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:08,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 05:53:08,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:08,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:08,135 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2021-11-20 05:53:08,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:08,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156506286] [2021-11-20 05:53:08,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:08,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:08,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:08,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:08,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:53:08,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:08,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:53:08,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:08,461 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 05:53:08,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:08,588 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 05:53:08,589 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:08,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156506286] [2021-11-20 05:53:08,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156506286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:08,590 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:08,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 05:53:08,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040057992] [2021-11-20 05:53:08,593 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:08,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:08,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:08,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:08,651 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 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) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-20 05:53:12,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.44s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:12,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:12,562 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-11-20 05:53:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:12,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-20 05:53:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:12,576 INFO L225 Difference]: With dead ends: 21 [2021-11-20 05:53:12,577 INFO L226 Difference]: Without dead ends: 9 [2021-11-20 05:53:12,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:12,585 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:12,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 05:53:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-20 05:53:12,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-20 05:53:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-11-20 05:53:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-20 05:53:12,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-20 05:53:12,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:12,627 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-20 05:53:12,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-20 05:53:12,628 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-20 05:53:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 05:53:12,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:12,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:12,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:12,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:12,834 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2021-11-20 05:53:12,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:12,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460337730] [2021-11-20 05:53:12,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:12,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:12,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:12,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:12,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:53:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:14,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:14,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:15,309 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 05:53:15,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:15,611 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 05:53:15,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:15,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460337730] [2021-11-20 05:53:15,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460337730] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:15,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:15,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-20 05:53:15,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538788495] [2021-11-20 05:53:15,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:15,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:53:15,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:15,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:53:15,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:15,617 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 05:53:19,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:22,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:23,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:23,553 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-20 05:53:23,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:53:23,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 8 [2021-11-20 05:53:23,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:23,556 INFO L225 Difference]: With dead ends: 17 [2021-11-20 05:53:23,556 INFO L226 Difference]: Without dead ends: 13 [2021-11-20 05:53:23,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:23,560 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:23,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 7.9s Time] [2021-11-20 05:53:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-20 05:53:23,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-20 05:53:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2021-11-20 05:53:23,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-20 05:53:23,569 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-11-20 05:53:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:23,569 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-20 05:53:23,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 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 05:53:23,570 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-20 05:53:23,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:53:23,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:23,571 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:23,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:23,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:23,799 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:23,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:23,800 INFO L85 PathProgramCache]: Analyzing trace with hash 833881267, now seen corresponding path program 2 times [2021-11-20 05:53:23,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:23,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941823195] [2021-11-20 05:53:23,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:23,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:23,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:23,803 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:23,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:53:30,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:53:30,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:30,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:30,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:30,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:53:31,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:53:31,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941823195] [2021-11-20 05:53:31,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941823195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:31,827 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:53:31,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-20 05:53:31,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994192887] [2021-11-20 05:53:31,828 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:31,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:53:31,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:53:31,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:53:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:53:31,832 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 05:53:35,344 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:39,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.52s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:43,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:47,463 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:53:48,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:48,977 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-20 05:53:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:53:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 05:53:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:48,986 INFO L225 Difference]: With dead ends: 25 [2021-11-20 05:53:48,987 INFO L226 Difference]: Without dead ends: 21 [2021-11-20 05:53:48,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:53:48,990 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:48,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 4 Unknown, 0 Unchecked, 15.7s Time] [2021-11-20 05:53:48,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-20 05:53:49,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-20 05:53:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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 05:53:49,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-20 05:53:49,005 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-11-20 05:53:49,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:49,005 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-20 05:53:49,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 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 05:53:49,006 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-20 05:53:49,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 05:53:49,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:49,007 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:49,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:49,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:53:49,211 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash -2056177221, now seen corresponding path program 3 times [2021-11-20 05:53:49,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:53:49,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840832884] [2021-11-20 05:53:49,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 05:53:49,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:53:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:53:49,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:53:49,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:54:39,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 05:54:39,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:54:40,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:54:40,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:54:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:41,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:54:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:54:44,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:54:44,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840832884] [2021-11-20 05:54:44,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840832884] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:54:44,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:54:44,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-20 05:54:44,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836912114] [2021-11-20 05:54:44,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:54:44,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:54:44,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:54:44,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:54:44,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:54:44,501 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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 05:54:48,143 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:52,261 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:54:56,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:00,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:04,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:08,847 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:12,957 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:17,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:55:22,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:55:22,782 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2021-11-20 05:55:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 05:55:22,784 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-20 05:55:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:55:22,786 INFO L225 Difference]: With dead ends: 41 [2021-11-20 05:55:22,786 INFO L226 Difference]: Without dead ends: 37 [2021-11-20 05:55:22,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=316, Invalid=554, Unknown=0, NotChecked=0, Total=870 [2021-11-20 05:55:22,790 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 14 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:55:22,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 80 Invalid, 8 Unknown, 0 Unchecked, 32.9s Time] [2021-11-20 05:55:22,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-20 05:55:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-20 05:55:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 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 05:55:22,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-11-20 05:55:22,804 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 20 [2021-11-20 05:55:22,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:55:22,804 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-11-20 05:55:22,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 18 states have internal predecessors, (36), 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 05:55:22,805 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-11-20 05:55:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:55:22,807 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:55:22,807 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1] [2021-11-20 05:55:23,035 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forcibly destroying the process [2021-11-20 05:55:23,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:55:23,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:55:23,043 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:55:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:55:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2091971637, now seen corresponding path program 4 times [2021-11-20 05:55:23,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:55:23,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1126796170] [2021-11-20 05:55:23,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 05:55:23,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:55:23,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:55:23,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:55:23,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:55:52,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 05:55:53,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:55:54,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 05:55:54,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:55:59,769 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:55:59,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:56:09,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:09,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1126796170] [2021-11-20 05:56:09,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1126796170] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:09,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:09,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-20 05:56:09,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814511323] [2021-11-20 05:56:09,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:09,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-20 05:56:09,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-20 05:56:09,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 05:56:09,390 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 34 states, 34 states have (on average 2.0) internal successors, (68), 34 states have internal predecessors, (68), 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 05:56:13,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:17,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:21,727 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:26,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:30,406 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:34,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:39,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:43,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.57s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:47,654 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:51,963 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:56:56,303 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:57:00,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:57:04,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:57:09,233 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:57:13,630 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:57:18,077 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-20 05:57:35,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:35,767 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2021-11-20 05:57:35,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-20 05:57:35,768 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 34 states have internal predecessors, (68), 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 36 [2021-11-20 05:57:35,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:35,771 INFO L225 Difference]: With dead ends: 73 [2021-11-20 05:57:35,771 INFO L226 Difference]: Without dead ends: 69 [2021-11-20 05:57:35,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=1336, Invalid=2446, Unknown=0, NotChecked=0, Total=3782 [2021-11-20 05:57:35,775 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 30 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:35,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 287 Invalid, 16 Unknown, 0 Unchecked, 69.1s Time] [2021-11-20 05:57:35,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-20 05:57:35,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-20 05:57:35,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 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 05:57:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-11-20 05:57:35,789 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 36 [2021-11-20 05:57:35,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:35,790 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-11-20 05:57:35,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.0) internal successors, (68), 34 states have internal predecessors, (68), 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 05:57:35,791 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-11-20 05:57:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 05:57:35,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:35,794 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1] [2021-11-20 05:57:36,018 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forcibly destroying the process [2021-11-20 05:57:36,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 137 [2021-11-20 05:57:36,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:36,112 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1451733013, now seen corresponding path program 5 times [2021-11-20 05:57:36,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:36,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937775083] [2021-11-20 05:57:36,113 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 05:57:36,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:36,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:36,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4589315-7080-457f-9f6c-e9a0dcfe4c5b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process