./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem14_label48.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_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/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_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem14_label48.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/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_89886cf7-a94e-4733-bb7a-0c8166dd4f20/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 8261a53c19f43c038d6c9bf7efdae8a565c27af3d0b11334f16494326c28bf76 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:52:49,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:52:49,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:52:49,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:52:49,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:52:49,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:52:49,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:52:49,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:52:49,068 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:52:49,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:52:49,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:52:49,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:52:49,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:52:49,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:52:49,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:52:49,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:52:49,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:52:49,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:52:49,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:52:49,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:52:49,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:52:49,093 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:52:49,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:52:49,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:52:49,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:52:49,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:52:49,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:52:49,104 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:52:49,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:52:49,106 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:52:49,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:52:49,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:52:49,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:52:49,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:52:49,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:52:49,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:52:49,113 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:52:49,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:52:49,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:52:49,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:52:49,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:52:49,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:52:49,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:52:49,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:52:49,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:52:49,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:52:49,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:52:49,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:52:49,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:52:49,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:52:49,156 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:52:49,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:52:49,157 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:52:49,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:52:49,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:52:49,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:52:49,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:52:49,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:52:49,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:52:49,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:52:49,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:52:49,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:52:49,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:52:49,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:52:49,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:52:49,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:52:49,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:49,163 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:52:49,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:52:49,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:52:49,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:52:49,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:52:49,164 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:52:49,165 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:52:49,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:52:49,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:52:49,166 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_89886cf7-a94e-4733-bb7a-0c8166dd4f20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8261a53c19f43c038d6c9bf7efdae8a565c27af3d0b11334f16494326c28bf76 [2021-11-20 05:52:49,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:52:49,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:52:49,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:52:49,526 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:52:49,527 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:52:49,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/eca-rers2012/Problem14_label48.c [2021-11-20 05:52:49,641 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/data/c9275d2b3/d179bb69dad149629f3a3b052918cba7/FLAG4443a9925 [2021-11-20 05:52:50,425 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:52:50,426 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/sv-benchmarks/c/eca-rers2012/Problem14_label48.c [2021-11-20 05:52:50,442 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/data/c9275d2b3/d179bb69dad149629f3a3b052918cba7/FLAG4443a9925 [2021-11-20 05:52:50,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/data/c9275d2b3/d179bb69dad149629f3a3b052918cba7 [2021-11-20 05:52:50,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:52:50,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:52:50,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:50,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:52:50,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:52:50,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:50" (1/1) ... [2021-11-20 05:52:50,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73a7145f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:50, skipping insertion in model container [2021-11-20 05:52:50,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:52:50" (1/1) ... [2021-11-20 05:52:50,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:52:50,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:52:51,028 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_89886cf7-a94e-4733-bb7a-0c8166dd4f20/sv-benchmarks/c/eca-rers2012/Problem14_label48.c[4040,4053] [2021-11-20 05:52:51,322 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:51,347 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:52:51,380 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_89886cf7-a94e-4733-bb7a-0c8166dd4f20/sv-benchmarks/c/eca-rers2012/Problem14_label48.c[4040,4053] [2021-11-20 05:52:51,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:52:51,555 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:52:51,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51 WrapperNode [2021-11-20 05:52:51,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:52:51,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:51,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:52:51,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:52:51,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,753 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 858 [2021-11-20 05:52:51,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:52:51,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:52:51,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:52:51,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:52:51,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:52:51,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:52:51,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:52:51,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:52:51,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (1/1) ... [2021-11-20 05:52:51,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:52:51,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:52:51,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:52:51,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:52:52,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:52:52,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:52:52,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:52:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:52:52,121 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:52:52,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:52:53,768 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:52:53,786 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:52:53,787 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 05:52:53,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:53 BoogieIcfgContainer [2021-11-20 05:52:53,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:52:53,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:52:53,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:52:53,797 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:52:53,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:52:50" (1/3) ... [2021-11-20 05:52:53,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dbbf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:53, skipping insertion in model container [2021-11-20 05:52:53,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:52:51" (2/3) ... [2021-11-20 05:52:53,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37dbbf25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:52:53, skipping insertion in model container [2021-11-20 05:52:53,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:53" (3/3) ... [2021-11-20 05:52:53,802 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label48.c [2021-11-20 05:52:53,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:52:53,810 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:52:53,891 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:52:53,905 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 05:52:53,906 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:52:53,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 05:52:53,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-20 05:52:53,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:53,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:53,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:53,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash 323974986, now seen corresponding path program 1 times [2021-11-20 05:52:53,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:53,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26065085] [2021-11-20 05:52:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:53,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:54,305 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 05:52:54,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:54,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26065085] [2021-11-20 05:52:54,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26065085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:54,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:54,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:52:54,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630009142] [2021-11-20 05:52:54,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:54,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:54,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:54,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:54,366 INFO L87 Difference]: Start difference. First operand has 245 states, 243 states have (on average 1.7366255144032923) internal successors, (422), 244 states have internal predecessors, (422), 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 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 05:52:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:56,652 INFO L93 Difference]: Finished difference Result 852 states and 1560 transitions. [2021-11-20 05:52:56,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:56,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 38 [2021-11-20 05:52:56,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:56,690 INFO L225 Difference]: With dead ends: 852 [2021-11-20 05:52:56,690 INFO L226 Difference]: Without dead ends: 538 [2021-11-20 05:52:56,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:52:56,706 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 556 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:56,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 44 Invalid, 1306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-20 05:52:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-20 05:52:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 538. [2021-11-20 05:52:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 1.4487895716945995) internal successors, (778), 537 states have internal predecessors, (778), 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 05:52:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 778 transitions. [2021-11-20 05:52:56,837 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 778 transitions. Word has length 38 [2021-11-20 05:52:56,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:56,838 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 778 transitions. [2021-11-20 05:52:56,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 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 05:52:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 778 transitions. [2021-11-20 05:52:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-20 05:52:56,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:56,850 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:56,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:52:56,851 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:56,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:56,852 INFO L85 PathProgramCache]: Analyzing trace with hash -644661184, now seen corresponding path program 1 times [2021-11-20 05:52:56,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:56,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603997023] [2021-11-20 05:52:56,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:56,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 05:52:57,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:57,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603997023] [2021-11-20 05:52:57,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603997023] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:57,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:57,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 05:52:57,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900253048] [2021-11-20 05:52:57,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:57,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:52:57,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:57,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:52:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:52:57,151 INFO L87 Difference]: Start difference. First operand 538 states and 778 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 05:52:58,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:58,129 INFO L93 Difference]: Finished difference Result 1074 states and 1656 transitions. [2021-11-20 05:52:58,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:52:58,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 186 [2021-11-20 05:52:58,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:58,136 INFO L225 Difference]: With dead ends: 1074 [2021-11-20 05:52:58,136 INFO L226 Difference]: Without dead ends: 716 [2021-11-20 05:52:58,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:52:58,139 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 125 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:58,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 57 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 05:52:58,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-11-20 05:52:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 716. [2021-11-20 05:52:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 1.353846153846154) internal successors, (968), 715 states have internal predecessors, (968), 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 05:52:58,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 968 transitions. [2021-11-20 05:52:58,212 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 968 transitions. Word has length 186 [2021-11-20 05:52:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:58,213 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 968 transitions. [2021-11-20 05:52:58,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 2 states have internal predecessors, (151), 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 05:52:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 968 transitions. [2021-11-20 05:52:58,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-20 05:52:58,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:58,218 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:58,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:52:58,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:58,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:58,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1687240179, now seen corresponding path program 1 times [2021-11-20 05:52:58,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:58,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124884001] [2021-11-20 05:52:58,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:58,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:52:58,569 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 05:52:58,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:52:58,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124884001] [2021-11-20 05:52:58,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124884001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:52:58,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:52:58,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:52:58,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949504258] [2021-11-20 05:52:58,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:52:58,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:52:58,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:52:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:52:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:58,579 INFO L87 Difference]: Start difference. First operand 716 states and 968 transitions. Second operand has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 05:52:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:52:59,673 INFO L93 Difference]: Finished difference Result 1637 states and 2268 transitions. [2021-11-20 05:52:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:52:59,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 209 [2021-11-20 05:52:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:52:59,686 INFO L225 Difference]: With dead ends: 1637 [2021-11-20 05:52:59,686 INFO L226 Difference]: Without dead ends: 1072 [2021-11-20 05:52:59,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:52:59,690 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 112 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:52:59,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 113 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:52:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-20 05:52:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 894. [2021-11-20 05:52:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 894 states, 893 states have (on average 1.1724524076147815) internal successors, (1047), 893 states have internal predecessors, (1047), 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 05:52:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1047 transitions. [2021-11-20 05:52:59,742 INFO L78 Accepts]: Start accepts. Automaton has 894 states and 1047 transitions. Word has length 209 [2021-11-20 05:52:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:52:59,743 INFO L470 AbstractCegarLoop]: Abstraction has 894 states and 1047 transitions. [2021-11-20 05:52:59,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.75) internal successors, (203), 3 states have internal predecessors, (203), 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 05:52:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 894 states and 1047 transitions. [2021-11-20 05:52:59,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-20 05:52:59,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:52:59,752 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:52:59,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:52:59,753 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:52:59,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:52:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash -525447176, now seen corresponding path program 1 times [2021-11-20 05:52:59,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:52:59,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803872152] [2021-11-20 05:52:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:52:59,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:52:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:00,214 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 171 proven. 130 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-20 05:53:00,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:00,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803872152] [2021-11-20 05:53:00,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803872152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:00,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55259564] [2021-11-20 05:53:00,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:00,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:00,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:00,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:00,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:53:00,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:00,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:53:00,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-20 05:53:01,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:01,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55259564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:01,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:01,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-20 05:53:01,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589696552] [2021-11-20 05:53:01,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:01,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:01,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:01,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:01,404 INFO L87 Difference]: Start difference. First operand 894 states and 1047 transitions. Second operand has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 05:53:02,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:02,236 INFO L93 Difference]: Finished difference Result 2320 states and 2778 transitions. [2021-11-20 05:53:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:02,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 340 [2021-11-20 05:53:02,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:02,253 INFO L225 Difference]: With dead ends: 2320 [2021-11-20 05:53:02,253 INFO L226 Difference]: Without dead ends: 1606 [2021-11-20 05:53:02,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:02,266 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 143 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:02,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 265 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:53:02,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-11-20 05:53:02,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1428. [2021-11-20 05:53:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1427 states have (on average 1.1401541695865451) internal successors, (1627), 1427 states have internal predecessors, (1627), 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 05:53:02,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1627 transitions. [2021-11-20 05:53:02,326 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1627 transitions. Word has length 340 [2021-11-20 05:53:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:02,328 INFO L470 AbstractCegarLoop]: Abstraction has 1428 states and 1627 transitions. [2021-11-20 05:53:02,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 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 05:53:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1627 transitions. [2021-11-20 05:53:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-11-20 05:53:02,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:02,343 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:02,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:02,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:02,566 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1515675842, now seen corresponding path program 1 times [2021-11-20 05:53:02,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:02,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577708069] [2021-11-20 05:53:02,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:02,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 562 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-20 05:53:02,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:02,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577708069] [2021-11-20 05:53:02,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577708069] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:02,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:02,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:02,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577846495] [2021-11-20 05:53:02,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:02,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:02,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:02,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:02,835 INFO L87 Difference]: Start difference. First operand 1428 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 05:53:03,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:03,634 INFO L93 Difference]: Finished difference Result 3210 states and 3757 transitions. [2021-11-20 05:53:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:03,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 439 [2021-11-20 05:53:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:03,651 INFO L225 Difference]: With dead ends: 3210 [2021-11-20 05:53:03,651 INFO L226 Difference]: Without dead ends: 1962 [2021-11-20 05:53:03,654 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 05:53:03,655 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:03,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 77 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:53:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2021-11-20 05:53:03,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1784. [2021-11-20 05:53:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1784 states, 1783 states have (on average 1.134043746494672) internal successors, (2022), 1783 states have internal predecessors, (2022), 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 05:53:03,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1784 states to 1784 states and 2022 transitions. [2021-11-20 05:53:03,721 INFO L78 Accepts]: Start accepts. Automaton has 1784 states and 2022 transitions. Word has length 439 [2021-11-20 05:53:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:03,723 INFO L470 AbstractCegarLoop]: Abstraction has 1784 states and 2022 transitions. [2021-11-20 05:53:03,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 05:53:03,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1784 states and 2022 transitions. [2021-11-20 05:53:03,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2021-11-20 05:53:03,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:03,738 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:03,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:53:03,738 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:03,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1446360066, now seen corresponding path program 1 times [2021-11-20 05:53:03,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:03,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423203241] [2021-11-20 05:53:03,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:03,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 552 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-20 05:53:03,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:03,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423203241] [2021-11-20 05:53:03,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423203241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:03,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:03,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:03,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31313478] [2021-11-20 05:53:03,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:03,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:03,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:03,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:03,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:03,965 INFO L87 Difference]: Start difference. First operand 1784 states and 2022 transitions. Second operand has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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 05:53:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:05,036 INFO L93 Difference]: Finished difference Result 3744 states and 4238 transitions. [2021-11-20 05:53:05,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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 463 [2021-11-20 05:53:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:05,052 INFO L225 Difference]: With dead ends: 3744 [2021-11-20 05:53:05,053 INFO L226 Difference]: Without dead ends: 2140 [2021-11-20 05:53:05,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:05,064 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 126 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:05,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 90 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-20 05:53:05,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2140 states. [2021-11-20 05:53:05,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2140 to 2140. [2021-11-20 05:53:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.11781206171108) internal successors, (2391), 2139 states have internal predecessors, (2391), 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 05:53:05,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2391 transitions. [2021-11-20 05:53:05,142 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2391 transitions. Word has length 463 [2021-11-20 05:53:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:05,143 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2391 transitions. [2021-11-20 05:53:05,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.75) internal successors, (347), 3 states have internal predecessors, (347), 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 05:53:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2391 transitions. [2021-11-20 05:53:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2021-11-20 05:53:05,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:05,160 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:05,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:53:05,161 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:05,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1587713622, now seen corresponding path program 1 times [2021-11-20 05:53:05,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:05,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977013491] [2021-11-20 05:53:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:05,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1057 backedges. 698 proven. 0 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2021-11-20 05:53:05,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:05,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977013491] [2021-11-20 05:53:05,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977013491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:05,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:05,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:05,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196672768] [2021-11-20 05:53:05,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:05,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:05,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:05,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:05,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:05,510 INFO L87 Difference]: Start difference. First operand 2140 states and 2391 transitions. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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 05:53:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:06,378 INFO L93 Difference]: Finished difference Result 4336 states and 4849 transitions. [2021-11-20 05:53:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:06,379 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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 519 [2021-11-20 05:53:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:06,395 INFO L225 Difference]: With dead ends: 4336 [2021-11-20 05:53:06,395 INFO L226 Difference]: Without dead ends: 2318 [2021-11-20 05:53:06,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:06,400 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 125 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:06,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 17 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:53:06,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2318 states. [2021-11-20 05:53:06,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2318 to 2140. [2021-11-20 05:53:06,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 2139 states have (on average 1.0855539971949508) internal successors, (2322), 2139 states have internal predecessors, (2322), 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 05:53:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2322 transitions. [2021-11-20 05:53:06,475 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2322 transitions. Word has length 519 [2021-11-20 05:53:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:06,476 INFO L470 AbstractCegarLoop]: Abstraction has 2140 states and 2322 transitions. [2021-11-20 05:53:06,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 3 states have internal predecessors, (250), 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 05:53:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2322 transitions. [2021-11-20 05:53:06,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2021-11-20 05:53:06,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:06,495 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:06,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:53:06,496 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:06,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:06,496 INFO L85 PathProgramCache]: Analyzing trace with hash -319638967, now seen corresponding path program 2 times [2021-11-20 05:53:06,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:06,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372173046] [2021-11-20 05:53:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:06,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 775 proven. 11 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 05:53:06,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:06,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372173046] [2021-11-20 05:53:06,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372173046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:06,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061460606] [2021-11-20 05:53:06,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:53:06,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:06,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:06,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:06,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:53:07,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 05:53:07,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:53:07,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:07,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:10,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 786 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 05:53:10,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:10,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061460606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:10,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:10,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-11-20 05:53:10,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319950152] [2021-11-20 05:53:10,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:10,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:53:10,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:53:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:10,115 INFO L87 Difference]: Start difference. First operand 2140 states and 2322 transitions. Second operand has 5 states, 5 states have (on average 60.4) internal successors, (302), 4 states have internal predecessors, (302), 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 05:53:11,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:11,313 INFO L93 Difference]: Finished difference Result 4841 states and 5308 transitions. [2021-11-20 05:53:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:11,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 4 states have internal predecessors, (302), 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 545 [2021-11-20 05:53:11,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:11,335 INFO L225 Difference]: With dead ends: 4841 [2021-11-20 05:53:11,335 INFO L226 Difference]: Without dead ends: 2881 [2021-11-20 05:53:11,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:11,340 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 301 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:11,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 20 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 05:53:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2881 states. [2021-11-20 05:53:11,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2881 to 2674. [2021-11-20 05:53:11,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2673 states have (on average 1.0751964085297419) internal successors, (2874), 2673 states have internal predecessors, (2874), 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 05:53:11,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 2874 transitions. [2021-11-20 05:53:11,430 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 2874 transitions. Word has length 545 [2021-11-20 05:53:11,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:11,431 INFO L470 AbstractCegarLoop]: Abstraction has 2674 states and 2874 transitions. [2021-11-20 05:53:11,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.4) internal successors, (302), 4 states have internal predecessors, (302), 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 05:53:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 2874 transitions. [2021-11-20 05:53:11,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-11-20 05:53:11,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:11,453 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:11,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:11,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-20 05:53:11,706 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:11,707 INFO L85 PathProgramCache]: Analyzing trace with hash 245952814, now seen corresponding path program 1 times [2021-11-20 05:53:11,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:11,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367019611] [2021-11-20 05:53:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:11,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 788 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 05:53:11,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:11,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367019611] [2021-11-20 05:53:11,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367019611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:11,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:11,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:11,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759415142] [2021-11-20 05:53:11,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:11,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:11,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:11,984 INFO L87 Difference]: Start difference. First operand 2674 states and 2874 transitions. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 05:53:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:12,696 INFO L93 Difference]: Finished difference Result 6058 states and 6580 transitions. [2021-11-20 05:53:12,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:12,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 552 [2021-11-20 05:53:12,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:12,725 INFO L225 Difference]: With dead ends: 6058 [2021-11-20 05:53:12,725 INFO L226 Difference]: Without dead ends: 3564 [2021-11-20 05:53:12,730 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 05:53:12,733 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 73 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:12,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 203 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:53:12,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3564 states. [2021-11-20 05:53:12,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3564 to 3386. [2021-11-20 05:53:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.0741506646971934) internal successors, (3636), 3385 states have internal predecessors, (3636), 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 05:53:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3636 transitions. [2021-11-20 05:53:12,853 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3636 transitions. Word has length 552 [2021-11-20 05:53:12,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:12,854 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 3636 transitions. [2021-11-20 05:53:12,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 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 05:53:12,855 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3636 transitions. [2021-11-20 05:53:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2021-11-20 05:53:12,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:12,864 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:12,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:53:12,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash -150190201, now seen corresponding path program 1 times [2021-11-20 05:53:12,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:12,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766445036] [2021-11-20 05:53:12,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:12,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 802 proven. 195 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2021-11-20 05:53:13,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:13,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766445036] [2021-11-20 05:53:13,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766445036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:13,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575190530] [2021-11-20 05:53:13,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:13,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:13,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:13,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:13,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 05:53:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:13,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:13,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 702 proven. 0 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-11-20 05:53:17,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:17,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575190530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:17,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:17,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-11-20 05:53:18,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924254660] [2021-11-20 05:53:18,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:18,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:18,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:18,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:18,003 INFO L87 Difference]: Start difference. First operand 3386 states and 3636 transitions. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 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 05:53:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:18,729 INFO L93 Difference]: Finished difference Result 6857 states and 7366 transitions. [2021-11-20 05:53:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 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 597 [2021-11-20 05:53:18,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:18,754 INFO L225 Difference]: With dead ends: 6857 [2021-11-20 05:53:18,754 INFO L226 Difference]: Without dead ends: 3651 [2021-11-20 05:53:18,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 601 GetRequests, 595 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:53:18,760 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 125 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:18,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 51 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:53:18,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3651 states. [2021-11-20 05:53:18,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3651 to 3386. [2021-11-20 05:53:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.0688330871491876) internal successors, (3618), 3385 states have internal predecessors, (3618), 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 05:53:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 3618 transitions. [2021-11-20 05:53:18,921 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 3618 transitions. Word has length 597 [2021-11-20 05:53:18,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:18,922 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 3618 transitions. [2021-11-20 05:53:18,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 3 states have internal predecessors, (326), 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 05:53:18,923 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 3618 transitions. [2021-11-20 05:53:18,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2021-11-20 05:53:18,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:18,932 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:18,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:19,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:19,162 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash -166196995, now seen corresponding path program 1 times [2021-11-20 05:53:19,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:19,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548600966] [2021-11-20 05:53:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:19,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:19,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1143 backedges. 793 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 05:53:19,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:19,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548600966] [2021-11-20 05:53:19,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548600966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:19,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:19,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:19,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988737065] [2021-11-20 05:53:19,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:19,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:19,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:19,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:19,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:19,445 INFO L87 Difference]: Start difference. First operand 3386 states and 3618 transitions. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 05:53:20,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:20,168 INFO L93 Difference]: Finished difference Result 7838 states and 8445 transitions. [2021-11-20 05:53:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 619 [2021-11-20 05:53:20,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:20,198 INFO L225 Difference]: With dead ends: 7838 [2021-11-20 05:53:20,198 INFO L226 Difference]: Without dead ends: 4632 [2021-11-20 05:53:20,203 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 05:53:20,204 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:20,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 57 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:53:20,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4632 states. [2021-11-20 05:53:20,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4632 to 4632. [2021-11-20 05:53:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.0632692722954005) internal successors, (4924), 4631 states have internal predecessors, (4924), 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 05:53:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 4924 transitions. [2021-11-20 05:53:20,335 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 4924 transitions. Word has length 619 [2021-11-20 05:53:20,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:20,337 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 4924 transitions. [2021-11-20 05:53:20,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 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 05:53:20,338 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 4924 transitions. [2021-11-20 05:53:20,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2021-11-20 05:53:20,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:20,350 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:20,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:53:20,351 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1384462902, now seen corresponding path program 1 times [2021-11-20 05:53:20,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:20,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36000919] [2021-11-20 05:53:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:20,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1739 backedges. 1234 proven. 155 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 05:53:20,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:20,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36000919] [2021-11-20 05:53:20,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36000919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:20,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986893807] [2021-11-20 05:53:20,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:20,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:20,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:20,880 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:20,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 05:53:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:21,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:21,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1739 backedges. 1234 proven. 155 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 05:53:22,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:53:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1739 backedges. 1234 proven. 155 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2021-11-20 05:53:24,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986893807] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:53:24,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:53:24,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-20 05:53:24,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592488937] [2021-11-20 05:53:24,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:53:24,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:53:24,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:24,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:53:24,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:24,529 INFO L87 Difference]: Start difference. First operand 4632 states and 4924 transitions. Second operand has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 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 05:53:25,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:25,836 INFO L93 Difference]: Finished difference Result 10508 states and 11209 transitions. [2021-11-20 05:53:25,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:25,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 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 774 [2021-11-20 05:53:25,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:25,868 INFO L225 Difference]: With dead ends: 10508 [2021-11-20 05:53:25,868 INFO L226 Difference]: Without dead ends: 6056 [2021-11-20 05:53:25,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1546 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:25,876 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 42 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1271 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:25,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 66 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 05:53:25,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-11-20 05:53:26,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 5344. [2021-11-20 05:53:26,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 1.064008983717013) internal successors, (5685), 5343 states have internal predecessors, (5685), 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 05:53:26,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 5685 transitions. [2021-11-20 05:53:26,044 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 5685 transitions. Word has length 774 [2021-11-20 05:53:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:26,046 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 5685 transitions. [2021-11-20 05:53:26,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 143.66666666666666) internal successors, (862), 6 states have internal predecessors, (862), 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 05:53:26,047 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 5685 transitions. [2021-11-20 05:53:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2021-11-20 05:53:26,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:26,061 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:26,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:26,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:26,290 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:26,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash -703064065, now seen corresponding path program 1 times [2021-11-20 05:53:26,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:26,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360497845] [2021-11-20 05:53:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:26,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:26,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2210 backedges. 1665 proven. 0 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2021-11-20 05:53:26,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:26,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360497845] [2021-11-20 05:53:26,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360497845] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:26,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:26,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:26,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039615260] [2021-11-20 05:53:26,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:26,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:26,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:26,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:26,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:26,752 INFO L87 Difference]: Start difference. First operand 5344 states and 5685 transitions. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 05:53:27,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:27,320 INFO L93 Difference]: Finished difference Result 10508 states and 11189 transitions. [2021-11-20 05:53:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:27,322 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 825 [2021-11-20 05:53:27,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:27,335 INFO L225 Difference]: With dead ends: 10508 [2021-11-20 05:53:27,335 INFO L226 Difference]: Without dead ends: 5344 [2021-11-20 05:53:27,342 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 05:53:27,343 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 51 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:27,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 242 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:53:27,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-11-20 05:53:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 4988. [2021-11-20 05:53:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4987 states have (on average 1.0615600561459795) internal successors, (5294), 4987 states have internal predecessors, (5294), 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 05:53:27,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 5294 transitions. [2021-11-20 05:53:27,452 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 5294 transitions. Word has length 825 [2021-11-20 05:53:27,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:27,454 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 5294 transitions. [2021-11-20 05:53:27,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 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 05:53:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 5294 transitions. [2021-11-20 05:53:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2021-11-20 05:53:27,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:27,506 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:27,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 05:53:27,507 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:27,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:27,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1452861494, now seen corresponding path program 1 times [2021-11-20 05:53:27,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:27,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372983214] [2021-11-20 05:53:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:27,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:27,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 1415 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-20 05:53:27,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:27,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372983214] [2021-11-20 05:53:27,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372983214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:27,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:27,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:27,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359190120] [2021-11-20 05:53:27,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:27,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:27,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:27,898 INFO L87 Difference]: Start difference. First operand 4988 states and 5294 transitions. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 05:53:28,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:28,556 INFO L93 Difference]: Finished difference Result 10864 states and 11626 transitions. [2021-11-20 05:53:28,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:28,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 846 [2021-11-20 05:53:28,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:28,583 INFO L225 Difference]: With dead ends: 10864 [2021-11-20 05:53:28,584 INFO L226 Difference]: Without dead ends: 6056 [2021-11-20 05:53:28,591 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 05:53:28,592 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 108 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:28,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 33 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:53:28,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6056 states. [2021-11-20 05:53:28,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6056 to 6056. [2021-11-20 05:53:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 6055 states have (on average 1.066226259289843) internal successors, (6456), 6055 states have internal predecessors, (6456), 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 05:53:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 6456 transitions. [2021-11-20 05:53:28,720 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 6456 transitions. Word has length 846 [2021-11-20 05:53:28,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:28,721 INFO L470 AbstractCegarLoop]: Abstraction has 6056 states and 6456 transitions. [2021-11-20 05:53:28,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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 05:53:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 6456 transitions. [2021-11-20 05:53:28,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2021-11-20 05:53:28,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:28,736 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:28,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:53:28,736 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:28,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1223574979, now seen corresponding path program 1 times [2021-11-20 05:53:28,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:28,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684199897] [2021-11-20 05:53:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:28,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:29,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2224 backedges. 1483 proven. 93 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-11-20 05:53:29,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:29,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684199897] [2021-11-20 05:53:29,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684199897] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:29,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650870966] [2021-11-20 05:53:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:29,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:29,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:29,208 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:29,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 05:53:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:29,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:53:29,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2224 backedges. 1576 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2021-11-20 05:53:31,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:31,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650870966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:31,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:31,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-20 05:53:31,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622192382] [2021-11-20 05:53:31,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:31,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:31,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:31,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:31,945 INFO L87 Difference]: Start difference. First operand 6056 states and 6456 transitions. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 05:53:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:32,567 INFO L93 Difference]: Finished difference Result 12466 states and 13279 transitions. [2021-11-20 05:53:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:32,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 864 [2021-11-20 05:53:32,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:32,582 INFO L225 Difference]: With dead ends: 12466 [2021-11-20 05:53:32,582 INFO L226 Difference]: Without dead ends: 6590 [2021-11-20 05:53:32,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 867 GetRequests, 863 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:32,591 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:32,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:53:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2021-11-20 05:53:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6056. [2021-11-20 05:53:32,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6056 states, 6055 states have (on average 1.066226259289843) internal successors, (6456), 6055 states have internal predecessors, (6456), 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 05:53:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6056 states to 6056 states and 6456 transitions. [2021-11-20 05:53:32,717 INFO L78 Accepts]: Start accepts. Automaton has 6056 states and 6456 transitions. Word has length 864 [2021-11-20 05:53:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:32,718 INFO L470 AbstractCegarLoop]: Abstraction has 6056 states and 6456 transitions. [2021-11-20 05:53:32,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 05:53:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 6056 states and 6456 transitions. [2021-11-20 05:53:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 933 [2021-11-20 05:53:32,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:32,733 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:32,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:32,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 05:53:32,949 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:32,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash -149204083, now seen corresponding path program 1 times [2021-11-20 05:53:32,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:32,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329350540] [2021-11-20 05:53:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:32,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2493 backedges. 1702 proven. 0 refuted. 0 times theorem prover too weak. 791 trivial. 0 not checked. [2021-11-20 05:53:33,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329350540] [2021-11-20 05:53:33,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329350540] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:33,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:33,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:33,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431622276] [2021-11-20 05:53:33,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:33,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:33,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:33,451 INFO L87 Difference]: Start difference. First operand 6056 states and 6456 transitions. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 05:53:34,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:34,149 INFO L93 Difference]: Finished difference Result 11754 states and 12551 transitions. [2021-11-20 05:53:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:34,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 932 [2021-11-20 05:53:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:34,163 INFO L225 Difference]: With dead ends: 11754 [2021-11-20 05:53:34,163 INFO L226 Difference]: Without dead ends: 5878 [2021-11-20 05:53:34,170 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 05:53:34,171 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:34,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 227 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:53:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2021-11-20 05:53:34,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5878. [2021-11-20 05:53:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5878 states, 5877 states have (on average 1.059384039475923) internal successors, (6226), 5877 states have internal predecessors, (6226), 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 05:53:34,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5878 states to 5878 states and 6226 transitions. [2021-11-20 05:53:34,285 INFO L78 Accepts]: Start accepts. Automaton has 5878 states and 6226 transitions. Word has length 932 [2021-11-20 05:53:34,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:34,286 INFO L470 AbstractCegarLoop]: Abstraction has 5878 states and 6226 transitions. [2021-11-20 05:53:34,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 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 05:53:34,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5878 states and 6226 transitions. [2021-11-20 05:53:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 942 [2021-11-20 05:53:34,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:34,304 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:34,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 05:53:34,304 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash 377118381, now seen corresponding path program 1 times [2021-11-20 05:53:34,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:34,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984551977] [2021-11-20 05:53:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:34,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 1777 proven. 72 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2021-11-20 05:53:34,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:34,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984551977] [2021-11-20 05:53:34,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984551977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:34,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302029676] [2021-11-20 05:53:34,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:34,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:34,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:34,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:34,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 05:53:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:35,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:53:35,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2793 backedges. 1490 proven. 0 refuted. 0 times theorem prover too weak. 1303 trivial. 0 not checked. [2021-11-20 05:53:37,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:37,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302029676] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:37,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:37,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-20 05:53:37,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419292259] [2021-11-20 05:53:37,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:37,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:37,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:37,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:37,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:37,222 INFO L87 Difference]: Start difference. First operand 5878 states and 6226 transitions. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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 05:53:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:38,200 INFO L93 Difference]: Finished difference Result 13000 states and 13773 transitions. [2021-11-20 05:53:38,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:38,201 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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 941 [2021-11-20 05:53:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:38,216 INFO L225 Difference]: With dead ends: 13000 [2021-11-20 05:53:38,217 INFO L226 Difference]: Without dead ends: 7302 [2021-11-20 05:53:38,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 940 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:53:38,225 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 108 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:38,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 59 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 05:53:38,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7302 states. [2021-11-20 05:53:38,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7302 to 6590. [2021-11-20 05:53:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6590 states, 6589 states have (on average 1.0576718773713765) internal successors, (6969), 6589 states have internal predecessors, (6969), 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 05:53:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6590 states to 6590 states and 6969 transitions. [2021-11-20 05:53:38,355 INFO L78 Accepts]: Start accepts. Automaton has 6590 states and 6969 transitions. Word has length 941 [2021-11-20 05:53:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:38,356 INFO L470 AbstractCegarLoop]: Abstraction has 6590 states and 6969 transitions. [2021-11-20 05:53:38,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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 05:53:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 6590 states and 6969 transitions. [2021-11-20 05:53:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2021-11-20 05:53:38,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:38,375 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:38,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:38,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 05:53:38,603 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:38,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1123634884, now seen corresponding path program 1 times [2021-11-20 05:53:38,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:38,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376882139] [2021-11-20 05:53:38,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:38,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3088 backedges. 1990 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-11-20 05:53:39,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:39,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376882139] [2021-11-20 05:53:39,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376882139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:39,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:39,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:39,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171544632] [2021-11-20 05:53:39,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:39,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:39,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:39,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:39,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:53:39,157 INFO L87 Difference]: Start difference. First operand 6590 states and 6969 transitions. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 05:53:39,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:39,849 INFO L93 Difference]: Finished difference Result 13178 states and 13941 transitions. [2021-11-20 05:53:39,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:39,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 1027 [2021-11-20 05:53:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:39,869 INFO L225 Difference]: With dead ends: 13178 [2021-11-20 05:53:39,869 INFO L226 Difference]: Without dead ends: 6768 [2021-11-20 05:53:39,877 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 05:53:39,878 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 24 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:39,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 226 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:53:39,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6768 states. [2021-11-20 05:53:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6768 to 6412. [2021-11-20 05:53:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6412 states, 6411 states have (on average 1.0545936671346123) internal successors, (6761), 6411 states have internal predecessors, (6761), 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 05:53:40,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6412 states to 6412 states and 6761 transitions. [2021-11-20 05:53:40,008 INFO L78 Accepts]: Start accepts. Automaton has 6412 states and 6761 transitions. Word has length 1027 [2021-11-20 05:53:40,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:40,009 INFO L470 AbstractCegarLoop]: Abstraction has 6412 states and 6761 transitions. [2021-11-20 05:53:40,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 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 05:53:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 6412 states and 6761 transitions. [2021-11-20 05:53:40,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1102 [2021-11-20 05:53:40,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:40,028 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:40,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 05:53:40,028 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:40,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:40,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1328529225, now seen corresponding path program 1 times [2021-11-20 05:53:40,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:40,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580817333] [2021-11-20 05:53:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:40,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 1534 proven. 95 refuted. 0 times theorem prover too weak. 1787 trivial. 0 not checked. [2021-11-20 05:53:40,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:40,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580817333] [2021-11-20 05:53:40,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580817333] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:40,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221254938] [2021-11-20 05:53:40,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:40,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:40,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:40,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:40,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 05:53:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:41,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:53:41,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 1629 proven. 0 refuted. 0 times theorem prover too weak. 1787 trivial. 0 not checked. [2021-11-20 05:53:43,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:43,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221254938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:43,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:43,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-20 05:53:43,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722068762] [2021-11-20 05:53:43,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:43,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:43,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:43,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:43,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:43,258 INFO L87 Difference]: Start difference. First operand 6412 states and 6761 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 05:53:44,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:44,011 INFO L93 Difference]: Finished difference Result 12822 states and 13520 transitions. [2021-11-20 05:53:44,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:44,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 1101 [2021-11-20 05:53:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:44,022 INFO L225 Difference]: With dead ends: 12822 [2021-11-20 05:53:44,022 INFO L226 Difference]: Without dead ends: 6590 [2021-11-20 05:53:44,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1104 GetRequests, 1100 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:44,030 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:44,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 229 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 05:53:44,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6590 states. [2021-11-20 05:53:44,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6590 to 6234. [2021-11-20 05:53:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6233 states have (on average 1.0421947697737848) internal successors, (6496), 6233 states have internal predecessors, (6496), 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 05:53:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 6496 transitions. [2021-11-20 05:53:44,144 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 6496 transitions. Word has length 1101 [2021-11-20 05:53:44,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:44,146 INFO L470 AbstractCegarLoop]: Abstraction has 6234 states and 6496 transitions. [2021-11-20 05:53:44,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 05:53:44,146 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 6496 transitions. [2021-11-20 05:53:44,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1652 [2021-11-20 05:53:44,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:44,181 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 8, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:44,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:44,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:44,399 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash 292188241, now seen corresponding path program 1 times [2021-11-20 05:53:44,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:44,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175559325] [2021-11-20 05:53:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:44,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 1706 proven. 1045 refuted. 0 times theorem prover too weak. 5613 trivial. 0 not checked. [2021-11-20 05:53:45,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175559325] [2021-11-20 05:53:45,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175559325] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:53:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558018593] [2021-11-20 05:53:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:45,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:45,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:53:45,608 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:53:45,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 05:53:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:46,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 05:53:46,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:53:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8364 backedges. 2751 proven. 0 refuted. 0 times theorem prover too weak. 5613 trivial. 0 not checked. [2021-11-20 05:53:49,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 05:53:49,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558018593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:49,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:53:49,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-20 05:53:49,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008878483] [2021-11-20 05:53:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:49,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:53:49,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:49,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:53:49,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:49,319 INFO L87 Difference]: Start difference. First operand 6234 states and 6496 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 05:53:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:49,916 INFO L93 Difference]: Finished difference Result 13356 states and 13888 transitions. [2021-11-20 05:53:49,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:53:49,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 1651 [2021-11-20 05:53:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:49,924 INFO L225 Difference]: With dead ends: 13356 [2021-11-20 05:53:49,924 INFO L226 Difference]: Without dead ends: 4098 [2021-11-20 05:53:49,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1654 GetRequests, 1650 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:53:49,932 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:49,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 245 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:53:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2021-11-20 05:53:50,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 4098. [2021-11-20 05:53:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4098 states, 4097 states have (on average 1.0226995362460336) internal successors, (4190), 4097 states have internal predecessors, (4190), 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 05:53:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 4190 transitions. [2021-11-20 05:53:50,016 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 4190 transitions. Word has length 1651 [2021-11-20 05:53:50,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:50,019 INFO L470 AbstractCegarLoop]: Abstraction has 4098 states and 4190 transitions. [2021-11-20 05:53:50,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 05:53:50,019 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 4190 transitions. [2021-11-20 05:53:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2021-11-20 05:53:50,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:50,073 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:50,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:53:50,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:53:50,290 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:50,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1151917844, now seen corresponding path program 1 times [2021-11-20 05:53:50,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:50,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246365180] [2021-11-20 05:53:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:50,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 9629 backedges. 1553 proven. 0 refuted. 0 times theorem prover too weak. 8076 trivial. 0 not checked. [2021-11-20 05:53:51,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:51,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246365180] [2021-11-20 05:53:51,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246365180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:51,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:51,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:53:51,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061417047] [2021-11-20 05:53:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:51,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:53:51,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:51,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:53:51,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:51,518 INFO L87 Difference]: Start difference. First operand 4098 states and 4190 transitions. Second operand has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 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 05:53:52,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:52,455 INFO L93 Difference]: Finished difference Result 5537 states and 5682 transitions. [2021-11-20 05:53:52,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:53:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 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 1722 [2021-11-20 05:53:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:52,465 INFO L225 Difference]: With dead ends: 5537 [2021-11-20 05:53:52,465 INFO L226 Difference]: Without dead ends: 5344 [2021-11-20 05:53:52,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:53:52,469 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 121 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:52,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 20 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 05:53:52,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5344 states. [2021-11-20 05:53:52,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5344 to 4810. [2021-11-20 05:53:52,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0266167602412144) internal successors, (4937), 4809 states have internal predecessors, (4937), 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 05:53:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4937 transitions. [2021-11-20 05:53:52,543 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4937 transitions. Word has length 1722 [2021-11-20 05:53:52,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:52,545 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4937 transitions. [2021-11-20 05:53:52,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.2) internal successors, (311), 4 states have internal predecessors, (311), 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 05:53:52,546 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4937 transitions. [2021-11-20 05:53:52,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1728 [2021-11-20 05:53:52,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:52,580 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:52,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 05:53:52,581 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:52,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1097919814, now seen corresponding path program 1 times [2021-11-20 05:53:52,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:52,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963902971] [2021-11-20 05:53:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:52,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:53,688 INFO L134 CoverageAnalysis]: Checked inductivity of 9684 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 9181 trivial. 0 not checked. [2021-11-20 05:53:53,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:53,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963902971] [2021-11-20 05:53:53,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963902971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:53,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:53,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:53:53,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133349793] [2021-11-20 05:53:53,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:53,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:53,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:53,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:53,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:53,694 INFO L87 Difference]: Start difference. First operand 4810 states and 4937 transitions. Second operand has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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 05:53:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:54,322 INFO L93 Difference]: Finished difference Result 5002 states and 5129 transitions. [2021-11-20 05:53:54,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:54,323 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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 1727 [2021-11-20 05:53:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:54,330 INFO L225 Difference]: With dead ends: 5002 [2021-11-20 05:53:54,330 INFO L226 Difference]: Without dead ends: 4810 [2021-11-20 05:53:54,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:54,332 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:54,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 17 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:53:54,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2021-11-20 05:53:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4810. [2021-11-20 05:53:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4810 states, 4809 states have (on average 1.0253690996049074) internal successors, (4931), 4809 states have internal predecessors, (4931), 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 05:53:54,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4810 states to 4810 states and 4931 transitions. [2021-11-20 05:53:54,410 INFO L78 Accepts]: Start accepts. Automaton has 4810 states and 4931 transitions. Word has length 1727 [2021-11-20 05:53:54,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:54,413 INFO L470 AbstractCegarLoop]: Abstraction has 4810 states and 4931 transitions. [2021-11-20 05:53:54,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.5) internal successors, (230), 3 states have internal predecessors, (230), 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 05:53:54,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4810 states and 4931 transitions. [2021-11-20 05:53:54,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2025 [2021-11-20 05:53:54,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:53:54,458 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:54,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 05:53:54,459 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:53:54,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:53:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1727252823, now seen corresponding path program 1 times [2021-11-20 05:53:54,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:53:54,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953454305] [2021-11-20 05:53:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:53:54,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:53:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:53:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 13033 backedges. 1789 proven. 0 refuted. 0 times theorem prover too weak. 11244 trivial. 0 not checked. [2021-11-20 05:53:55,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:53:55,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953454305] [2021-11-20 05:53:55,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953454305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:53:55,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:53:55,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:53:55,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504337276] [2021-11-20 05:53:55,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:53:55,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:53:55,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:53:55,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:53:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:55,892 INFO L87 Difference]: Start difference. First operand 4810 states and 4931 transitions. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 05:53:56,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:53:56,503 INFO L93 Difference]: Finished difference Result 4823 states and 4944 transitions. [2021-11-20 05:53:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:53:56,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 2024 [2021-11-20 05:53:56,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:53:56,505 INFO L225 Difference]: With dead ends: 4823 [2021-11-20 05:53:56,505 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 05:53:56,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:53:56,508 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:53:56,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 15 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:53:56,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 05:53:56,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 05:53:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:53:56,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 05:53:56,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 2024 [2021-11-20 05:53:56,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:53:56,511 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 05:53:56,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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 05:53:56,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 05:53:56,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 05:53:56,517 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:53:56,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 05:53:56,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 05:53:59,844 INFO L858 garLoopResultBuilder]: For program point L762(lines 762 880) no Hoare annotation was computed. [2021-11-20 05:53:59,844 INFO L858 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2021-11-20 05:53:59,844 INFO L858 garLoopResultBuilder]: For program point L829(lines 829 880) no Hoare annotation was computed. [2021-11-20 05:53:59,845 INFO L858 garLoopResultBuilder]: For program point L631(lines 631 880) no Hoare annotation was computed. [2021-11-20 05:53:59,845 INFO L858 garLoopResultBuilder]: For program point L565(lines 565 880) no Hoare annotation was computed. [2021-11-20 05:53:59,845 INFO L858 garLoopResultBuilder]: For program point L169-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,845 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,845 INFO L858 garLoopResultBuilder]: For program point L37-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,845 INFO L858 garLoopResultBuilder]: For program point L698(lines 698 880) no Hoare annotation was computed. [2021-11-20 05:53:59,845 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 880) no Hoare annotation was computed. [2021-11-20 05:53:59,846 INFO L858 garLoopResultBuilder]: For program point L170(line 170) no Hoare annotation was computed. [2021-11-20 05:53:59,846 INFO L858 garLoopResultBuilder]: For program point L104(line 104) no Hoare annotation was computed. [2021-11-20 05:53:59,846 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-20 05:53:59,846 INFO L858 garLoopResultBuilder]: For program point L369(lines 369 880) no Hoare annotation was computed. [2021-11-20 05:53:59,846 INFO L858 garLoopResultBuilder]: For program point L303(lines 303 880) no Hoare annotation was computed. [2021-11-20 05:53:59,847 INFO L858 garLoopResultBuilder]: For program point L436(lines 436 880) no Hoare annotation was computed. [2021-11-20 05:53:59,847 INFO L858 garLoopResultBuilder]: For program point L172-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,847 INFO L858 garLoopResultBuilder]: For program point L106-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,847 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,847 INFO L858 garLoopResultBuilder]: For program point L239(lines 239 880) no Hoare annotation was computed. [2021-11-20 05:53:59,847 INFO L858 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2021-11-20 05:53:59,848 INFO L858 garLoopResultBuilder]: For program point L107(line 107) no Hoare annotation was computed. [2021-11-20 05:53:59,848 INFO L858 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2021-11-20 05:53:59,848 INFO L858 garLoopResultBuilder]: For program point L768(lines 768 880) no Hoare annotation was computed. [2021-11-20 05:53:59,848 INFO L858 garLoopResultBuilder]: For program point L636(lines 636 880) no Hoare annotation was computed. [2021-11-20 05:53:59,848 INFO L858 garLoopResultBuilder]: For program point L835(lines 835 880) no Hoare annotation was computed. [2021-11-20 05:53:59,849 INFO L858 garLoopResultBuilder]: For program point L571(lines 571 880) no Hoare annotation was computed. [2021-11-20 05:53:59,849 INFO L858 garLoopResultBuilder]: For program point L505(lines 505 880) no Hoare annotation was computed. [2021-11-20 05:53:59,849 INFO L858 garLoopResultBuilder]: For program point L175-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,849 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,849 INFO L858 garLoopResultBuilder]: For program point L43-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,850 INFO L858 garLoopResultBuilder]: For program point L704(lines 704 880) no Hoare annotation was computed. [2021-11-20 05:53:59,850 INFO L858 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2021-11-20 05:53:59,850 INFO L858 garLoopResultBuilder]: For program point L110(line 110) no Hoare annotation was computed. [2021-11-20 05:53:59,850 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-11-20 05:53:59,850 INFO L858 garLoopResultBuilder]: For program point L309(lines 309 880) no Hoare annotation was computed. [2021-11-20 05:53:59,851 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 880) no Hoare annotation was computed. [2021-11-20 05:53:59,851 INFO L858 garLoopResultBuilder]: For program point L376(lines 376 880) no Hoare annotation was computed. [2021-11-20 05:53:59,851 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,851 INFO L858 garLoopResultBuilder]: For program point L112-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,851 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,852 INFO L858 garLoopResultBuilder]: For program point L245(lines 245 880) no Hoare annotation was computed. [2021-11-20 05:53:59,852 INFO L858 garLoopResultBuilder]: For program point L179(line 179) no Hoare annotation was computed. [2021-11-20 05:53:59,852 INFO L858 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2021-11-20 05:53:59,852 INFO L858 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-11-20 05:53:59,852 INFO L858 garLoopResultBuilder]: For program point L774(lines 774 880) no Hoare annotation was computed. [2021-11-20 05:53:59,853 INFO L858 garLoopResultBuilder]: For program point L642(lines 642 880) no Hoare annotation was computed. [2021-11-20 05:53:59,853 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 880) no Hoare annotation was computed. [2021-11-20 05:53:59,853 INFO L858 garLoopResultBuilder]: For program point L841(lines 841 880) no Hoare annotation was computed. [2021-11-20 05:53:59,853 INFO L858 garLoopResultBuilder]: For program point L181-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,853 INFO L858 garLoopResultBuilder]: For program point L115-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,854 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,854 INFO L858 garLoopResultBuilder]: For program point L710(lines 710 880) no Hoare annotation was computed. [2021-11-20 05:53:59,854 INFO L858 garLoopResultBuilder]: For program point L578(lines 578 880) no Hoare annotation was computed. [2021-11-20 05:53:59,854 INFO L858 garLoopResultBuilder]: For program point L182(line 182) no Hoare annotation was computed. [2021-11-20 05:53:59,854 INFO L858 garLoopResultBuilder]: For program point L116(line 116) no Hoare annotation was computed. [2021-11-20 05:53:59,854 INFO L858 garLoopResultBuilder]: For program point L50(line 50) no Hoare annotation was computed. [2021-11-20 05:53:59,855 INFO L858 garLoopResultBuilder]: For program point L315(lines 315 880) no Hoare annotation was computed. [2021-11-20 05:53:59,855 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 880) no Hoare annotation was computed. [2021-11-20 05:53:59,855 INFO L858 garLoopResultBuilder]: For program point L382(lines 382 880) no Hoare annotation was computed. [2021-11-20 05:53:59,855 INFO L858 garLoopResultBuilder]: For program point L184-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,855 INFO L858 garLoopResultBuilder]: For program point L118-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,856 INFO L858 garLoopResultBuilder]: For program point L52-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,856 INFO L858 garLoopResultBuilder]: For program point L251(lines 251 880) no Hoare annotation was computed. [2021-11-20 05:53:59,856 INFO L858 garLoopResultBuilder]: For program point L185(line 185) no Hoare annotation was computed. [2021-11-20 05:53:59,856 INFO L858 garLoopResultBuilder]: For program point L119(line 119) no Hoare annotation was computed. [2021-11-20 05:53:59,856 INFO L858 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2021-11-20 05:53:59,857 INFO L858 garLoopResultBuilder]: For program point L648(lines 648 880) no Hoare annotation was computed. [2021-11-20 05:53:59,857 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 880) no Hoare annotation was computed. [2021-11-20 05:53:59,857 INFO L858 garLoopResultBuilder]: For program point L847(lines 847 880) no Hoare annotation was computed. [2021-11-20 05:53:59,857 INFO L858 garLoopResultBuilder]: For program point L781(lines 781 880) no Hoare annotation was computed. [2021-11-20 05:53:59,857 INFO L858 garLoopResultBuilder]: For program point L583(lines 583 880) no Hoare annotation was computed. [2021-11-20 05:53:59,858 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,858 INFO L858 garLoopResultBuilder]: For program point L121-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,858 INFO L858 garLoopResultBuilder]: For program point L55-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,858 INFO L858 garLoopResultBuilder]: For program point L716(lines 716 880) no Hoare annotation was computed. [2021-11-20 05:53:59,858 INFO L858 garLoopResultBuilder]: For program point L188(line 188) no Hoare annotation was computed. [2021-11-20 05:53:59,859 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-11-20 05:53:59,859 INFO L858 garLoopResultBuilder]: For program point L56(line 56) no Hoare annotation was computed. [2021-11-20 05:53:59,859 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 880) no Hoare annotation was computed. [2021-11-20 05:53:59,859 INFO L858 garLoopResultBuilder]: For program point L454(lines 454 880) no Hoare annotation was computed. [2021-11-20 05:53:59,859 INFO L858 garLoopResultBuilder]: For program point L388(lines 388 880) no Hoare annotation was computed. [2021-11-20 05:53:59,860 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 05:53:59,860 INFO L858 garLoopResultBuilder]: For program point L190-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,860 INFO L858 garLoopResultBuilder]: For program point L124-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,860 INFO L858 garLoopResultBuilder]: For program point L58-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,860 INFO L858 garLoopResultBuilder]: For program point L257(lines 257 880) no Hoare annotation was computed. [2021-11-20 05:53:59,860 INFO L858 garLoopResultBuilder]: For program point L191(line 191) no Hoare annotation was computed. [2021-11-20 05:53:59,861 INFO L858 garLoopResultBuilder]: For program point L125(line 125) no Hoare annotation was computed. [2021-11-20 05:53:59,861 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-11-20 05:53:59,861 INFO L858 garLoopResultBuilder]: For program point L852(lines 852 880) no Hoare annotation was computed. [2021-11-20 05:53:59,861 INFO L858 garLoopResultBuilder]: For program point L654(lines 654 880) no Hoare annotation was computed. [2021-11-20 05:53:59,861 INFO L858 garLoopResultBuilder]: For program point L522(lines 522 880) no Hoare annotation was computed. [2021-11-20 05:53:59,862 INFO L858 garLoopResultBuilder]: For program point L787(lines 787 880) no Hoare annotation was computed. [2021-11-20 05:53:59,862 INFO L858 garLoopResultBuilder]: For program point L589(lines 589 880) no Hoare annotation was computed. [2021-11-20 05:53:59,862 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,862 INFO L858 garLoopResultBuilder]: For program point L127-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,862 INFO L858 garLoopResultBuilder]: For program point L61-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,863 INFO L858 garLoopResultBuilder]: For program point L722(lines 722 880) no Hoare annotation was computed. [2021-11-20 05:53:59,863 INFO L858 garLoopResultBuilder]: For program point L194(line 194) no Hoare annotation was computed. [2021-11-20 05:53:59,863 INFO L858 garLoopResultBuilder]: For program point L128(line 128) no Hoare annotation was computed. [2021-11-20 05:53:59,863 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-11-20 05:53:59,863 INFO L858 garLoopResultBuilder]: For program point L459(lines 459 880) no Hoare annotation was computed. [2021-11-20 05:53:59,864 INFO L858 garLoopResultBuilder]: For program point L327(lines 327 880) no Hoare annotation was computed. [2021-11-20 05:53:59,864 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 880) no Hoare annotation was computed. [2021-11-20 05:53:59,864 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 880) no Hoare annotation was computed. [2021-11-20 05:53:59,864 INFO L858 garLoopResultBuilder]: For program point L196-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,864 INFO L858 garLoopResultBuilder]: For program point L130-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,864 INFO L858 garLoopResultBuilder]: For program point L64-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,865 INFO L858 garLoopResultBuilder]: For program point L197(line 197) no Hoare annotation was computed. [2021-11-20 05:53:59,865 INFO L858 garLoopResultBuilder]: For program point L131(line 131) no Hoare annotation was computed. [2021-11-20 05:53:59,865 INFO L858 garLoopResultBuilder]: For program point L65(line 65) no Hoare annotation was computed. [2021-11-20 05:53:59,865 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 05:53:59,865 INFO L858 garLoopResultBuilder]: For program point L858(lines 858 880) no Hoare annotation was computed. [2021-11-20 05:53:59,866 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 128) no Hoare annotation was computed. [2021-11-20 05:53:59,866 INFO L858 garLoopResultBuilder]: For program point L660(lines 660 880) no Hoare annotation was computed. [2021-11-20 05:53:59,866 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 880) no Hoare annotation was computed. [2021-11-20 05:53:59,866 INFO L858 garLoopResultBuilder]: For program point L793(lines 793 880) no Hoare annotation was computed. [2021-11-20 05:53:59,866 INFO L858 garLoopResultBuilder]: For program point L595(lines 595 880) no Hoare annotation was computed. [2021-11-20 05:53:59,867 INFO L858 garLoopResultBuilder]: For program point L199-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,867 INFO L858 garLoopResultBuilder]: For program point L133-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,867 INFO L858 garLoopResultBuilder]: For program point L67-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,867 INFO L858 garLoopResultBuilder]: For program point L728(lines 728 880) no Hoare annotation was computed. [2021-11-20 05:53:59,867 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 880) no Hoare annotation was computed. [2021-11-20 05:53:59,868 INFO L858 garLoopResultBuilder]: For program point L200(line 200) no Hoare annotation was computed. [2021-11-20 05:53:59,868 INFO L858 garLoopResultBuilder]: For program point L134(line 134) no Hoare annotation was computed. [2021-11-20 05:53:59,868 INFO L858 garLoopResultBuilder]: For program point L68(line 68) no Hoare annotation was computed. [2021-11-20 05:53:59,868 INFO L858 garLoopResultBuilder]: For program point L333(lines 333 880) no Hoare annotation was computed. [2021-11-20 05:53:59,868 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 880) no Hoare annotation was computed. [2021-11-20 05:53:59,868 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 880) no Hoare annotation was computed. [2021-11-20 05:53:59,869 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,869 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,869 INFO L858 garLoopResultBuilder]: For program point L70-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,869 INFO L858 garLoopResultBuilder]: For program point L203(line 203) no Hoare annotation was computed. [2021-11-20 05:53:59,869 INFO L858 garLoopResultBuilder]: For program point L137(line 137) no Hoare annotation was computed. [2021-11-20 05:53:59,870 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-11-20 05:53:59,870 INFO L858 garLoopResultBuilder]: For program point L864(lines 864 880) no Hoare annotation was computed. [2021-11-20 05:53:59,870 INFO L858 garLoopResultBuilder]: For program point L666(lines 666 880) no Hoare annotation was computed. [2021-11-20 05:53:59,870 INFO L858 garLoopResultBuilder]: For program point L534(lines 534 880) no Hoare annotation was computed. [2021-11-20 05:53:59,870 INFO L858 garLoopResultBuilder]: For program point L799(lines 799 880) no Hoare annotation was computed. [2021-11-20 05:53:59,870 INFO L858 garLoopResultBuilder]: For program point L601(lines 601 880) no Hoare annotation was computed. [2021-11-20 05:53:59,871 INFO L858 garLoopResultBuilder]: For program point L205-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,871 INFO L858 garLoopResultBuilder]: For program point L139-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,871 INFO L858 garLoopResultBuilder]: For program point L73-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,871 INFO L858 garLoopResultBuilder]: For program point L734(lines 734 880) no Hoare annotation was computed. [2021-11-20 05:53:59,871 INFO L858 garLoopResultBuilder]: For program point L470(lines 470 880) no Hoare annotation was computed. [2021-11-20 05:53:59,872 INFO L858 garLoopResultBuilder]: For program point L206(line 206) no Hoare annotation was computed. [2021-11-20 05:53:59,872 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-11-20 05:53:59,872 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-11-20 05:53:59,872 INFO L858 garLoopResultBuilder]: For program point L339(lines 339 880) no Hoare annotation was computed. [2021-11-20 05:53:59,872 INFO L858 garLoopResultBuilder]: For program point L406(lines 406 880) no Hoare annotation was computed. [2021-11-20 05:53:59,872 INFO L858 garLoopResultBuilder]: For program point L274(lines 274 880) no Hoare annotation was computed. [2021-11-20 05:53:59,873 INFO L858 garLoopResultBuilder]: For program point L208-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,873 INFO L858 garLoopResultBuilder]: For program point L142-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,873 INFO L858 garLoopResultBuilder]: For program point L76-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,873 INFO L858 garLoopResultBuilder]: For program point L869(lines 869 880) no Hoare annotation was computed. [2021-11-20 05:53:59,873 INFO L858 garLoopResultBuilder]: For program point L209(line 209) no Hoare annotation was computed. [2021-11-20 05:53:59,874 INFO L858 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2021-11-20 05:53:59,874 INFO L858 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-11-20 05:53:59,874 INFO L858 garLoopResultBuilder]: For program point L672(lines 672 880) no Hoare annotation was computed. [2021-11-20 05:53:59,874 INFO L858 garLoopResultBuilder]: For program point L540(lines 540 880) no Hoare annotation was computed. [2021-11-20 05:53:59,874 INFO L858 garLoopResultBuilder]: For program point L805(lines 805 880) no Hoare annotation was computed. [2021-11-20 05:53:59,874 INFO L858 garLoopResultBuilder]: For program point L607(lines 607 880) no Hoare annotation was computed. [2021-11-20 05:53:59,875 INFO L858 garLoopResultBuilder]: For program point L211-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,875 INFO L858 garLoopResultBuilder]: For program point L145-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,875 INFO L858 garLoopResultBuilder]: For program point L79-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,875 INFO L858 garLoopResultBuilder]: For program point L740(lines 740 880) no Hoare annotation was computed. [2021-11-20 05:53:59,875 INFO L858 garLoopResultBuilder]: For program point L212(line 212) no Hoare annotation was computed. [2021-11-20 05:53:59,876 INFO L858 garLoopResultBuilder]: For program point L146(line 146) no Hoare annotation was computed. [2021-11-20 05:53:59,876 INFO L858 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2021-11-20 05:53:59,876 INFO L858 garLoopResultBuilder]: For program point L477(lines 477 880) no Hoare annotation was computed. [2021-11-20 05:53:59,876 INFO L858 garLoopResultBuilder]: For program point L345(lines 345 880) no Hoare annotation was computed. [2021-11-20 05:53:59,876 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 880) no Hoare annotation was computed. [2021-11-20 05:53:59,876 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 880) no Hoare annotation was computed. [2021-11-20 05:53:59,877 INFO L858 garLoopResultBuilder]: For program point L148-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,877 INFO L858 garLoopResultBuilder]: For program point L82-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,877 INFO L858 garLoopResultBuilder]: For program point L875(lines 875 880) no Hoare annotation was computed. [2021-11-20 05:53:59,877 INFO L858 garLoopResultBuilder]: For program point L149(line 149) no Hoare annotation was computed. [2021-11-20 05:53:59,877 INFO L858 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-11-20 05:53:59,878 INFO L858 garLoopResultBuilder]: For program point L678(lines 678 880) no Hoare annotation was computed. [2021-11-20 05:53:59,878 INFO L858 garLoopResultBuilder]: For program point L546(lines 546 880) no Hoare annotation was computed. [2021-11-20 05:53:59,878 INFO L858 garLoopResultBuilder]: For program point L811(lines 811 880) no Hoare annotation was computed. [2021-11-20 05:53:59,878 INFO L858 garLoopResultBuilder]: For program point L745(lines 745 880) no Hoare annotation was computed. [2021-11-20 05:53:59,878 INFO L858 garLoopResultBuilder]: For program point L613(lines 613 880) no Hoare annotation was computed. [2021-11-20 05:53:59,878 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,879 INFO L858 garLoopResultBuilder]: For program point L85-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,879 INFO L858 garLoopResultBuilder]: For program point L482(lines 482 880) no Hoare annotation was computed. [2021-11-20 05:53:59,879 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 05:53:59,879 INFO L858 garLoopResultBuilder]: For program point L152(line 152) no Hoare annotation was computed. [2021-11-20 05:53:59,879 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-11-20 05:53:59,880 INFO L858 garLoopResultBuilder]: For program point L351(lines 351 880) no Hoare annotation was computed. [2021-11-20 05:53:59,880 INFO L858 garLoopResultBuilder]: For program point L285(lines 285 880) no Hoare annotation was computed. [2021-11-20 05:53:59,880 INFO L858 garLoopResultBuilder]: For program point L418(lines 418 880) no Hoare annotation was computed. [2021-11-20 05:53:59,880 INFO L858 garLoopResultBuilder]: For program point L154-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,880 INFO L858 garLoopResultBuilder]: For program point L88-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,881 INFO L854 garLoopResultBuilder]: At program point L881(lines 30 882) the Hoare annotation is: (let ((.cse10 (+ ~a12~0 43)) (.cse8 (= 7 ~a15~0))) (let ((.cse4 (<= ~a15~0 7)) (.cse7 (<= ~a21~0 8)) (.cse0 (<= 9 ~a21~0)) (.cse9 (<= ~a12~0 599999)) (.cse2 (<= ~a15~0 8)) (.cse3 (<= (+ 49 ~a12~0) 0)) (.cse1 (= ~a24~0 1)) (.cse5 (not .cse8)) (.cse6 (< 0 .cse10)) (.cse11 (<= ~a12~0 586307))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4 .cse5) (and (<= ~a21~0 9) .cse1 .cse4 .cse6) (and .cse1 .cse4 .cse7) (and .cse1 (< 80 ~a12~0) (= ~a21~0 10) .cse8) (and (<= ~a21~0 6) .cse4 .cse3) (and .cse1 (<= 8 ~a21~0) .cse7 .cse9) (and .cse0 (<= .cse10 0) .cse1 .cse2 .cse5) (and .cse1 .cse5 (<= 10 ~a21~0) .cse11) (and .cse1 (<= 7 ~a21~0) .cse5 .cse9 .cse6) (and .cse1 (= 7 ~a21~0) .cse2 .cse3) (and .cse1 .cse5 .cse6 .cse11)))) [2021-11-20 05:53:59,881 INFO L858 garLoopResultBuilder]: For program point L551(lines 551 880) no Hoare annotation was computed. [2021-11-20 05:53:59,881 INFO L858 garLoopResultBuilder]: For program point L221(lines 221 880) no Hoare annotation was computed. [2021-11-20 05:53:59,881 INFO L858 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-11-20 05:53:59,882 INFO L858 garLoopResultBuilder]: For program point L89(line 89) no Hoare annotation was computed. [2021-11-20 05:53:59,882 INFO L858 garLoopResultBuilder]: For program point L684(lines 684 880) no Hoare annotation was computed. [2021-11-20 05:53:59,882 INFO L858 garLoopResultBuilder]: For program point L817(lines 817 880) no Hoare annotation was computed. [2021-11-20 05:53:59,882 INFO L858 garLoopResultBuilder]: For program point L751(lines 751 880) no Hoare annotation was computed. [2021-11-20 05:53:59,882 INFO L858 garLoopResultBuilder]: For program point L619(lines 619 880) no Hoare annotation was computed. [2021-11-20 05:53:59,882 INFO L858 garLoopResultBuilder]: For program point L157-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,883 INFO L858 garLoopResultBuilder]: For program point L91-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,883 INFO L861 garLoopResultBuilder]: At program point L884(lines 884 900) the Hoare annotation is: true [2021-11-20 05:53:59,883 INFO L858 garLoopResultBuilder]: For program point L488(lines 488 880) no Hoare annotation was computed. [2021-11-20 05:53:59,883 INFO L858 garLoopResultBuilder]: For program point L290(lines 290 880) no Hoare annotation was computed. [2021-11-20 05:53:59,883 INFO L858 garLoopResultBuilder]: For program point L158(line 158) no Hoare annotation was computed. [2021-11-20 05:53:59,884 INFO L858 garLoopResultBuilder]: For program point L92(line 92) no Hoare annotation was computed. [2021-11-20 05:53:59,884 INFO L858 garLoopResultBuilder]: For program point L687(lines 687 880) no Hoare annotation was computed. [2021-11-20 05:53:59,884 INFO L858 garLoopResultBuilder]: For program point L357(lines 357 880) no Hoare annotation was computed. [2021-11-20 05:53:59,884 INFO L858 garLoopResultBuilder]: For program point L424(lines 424 880) no Hoare annotation was computed. [2021-11-20 05:53:59,884 INFO L858 garLoopResultBuilder]: For program point L160-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,884 INFO L858 garLoopResultBuilder]: For program point L94-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,885 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 05:53:59,885 INFO L858 garLoopResultBuilder]: For program point L557(lines 557 880) no Hoare annotation was computed. [2021-11-20 05:53:59,885 INFO L858 garLoopResultBuilder]: For program point L227(lines 227 880) no Hoare annotation was computed. [2021-11-20 05:53:59,885 INFO L858 garLoopResultBuilder]: For program point L161(line 161) no Hoare annotation was computed. [2021-11-20 05:53:59,885 INFO L858 garLoopResultBuilder]: For program point L95(line 95) no Hoare annotation was computed. [2021-11-20 05:53:59,886 INFO L858 garLoopResultBuilder]: For program point L757(lines 757 880) no Hoare annotation was computed. [2021-11-20 05:53:59,886 INFO L858 garLoopResultBuilder]: For program point L625(lines 625 880) no Hoare annotation was computed. [2021-11-20 05:53:59,886 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,886 INFO L858 garLoopResultBuilder]: For program point L97-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,886 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 33) no Hoare annotation was computed. [2021-11-20 05:53:59,886 INFO L858 garLoopResultBuilder]: For program point L31-2(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,887 INFO L858 garLoopResultBuilder]: For program point L824(lines 824 880) no Hoare annotation was computed. [2021-11-20 05:53:59,887 INFO L854 garLoopResultBuilder]: At program point L890-2(lines 890 899) the Hoare annotation is: (let ((.cse10 (+ ~a12~0 43)) (.cse8 (= 7 ~a15~0))) (let ((.cse4 (<= ~a15~0 7)) (.cse7 (<= ~a21~0 8)) (.cse0 (<= 9 ~a21~0)) (.cse9 (<= ~a12~0 599999)) (.cse2 (<= ~a15~0 8)) (.cse3 (<= (+ 49 ~a12~0) 0)) (.cse1 (= ~a24~0 1)) (.cse5 (not .cse8)) (.cse6 (< 0 .cse10)) (.cse11 (<= ~a12~0 586307))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse1 .cse4 .cse5) (and (<= ~a21~0 9) .cse1 .cse4 .cse6) (and .cse1 .cse4 .cse7) (and .cse1 (< 80 ~a12~0) (= ~a21~0 10) .cse8) (and (<= ~a21~0 6) .cse4 .cse3) (and .cse1 (<= 8 ~a21~0) .cse7 .cse9) (and .cse0 (<= .cse10 0) .cse1 .cse2 .cse5) (and .cse1 .cse5 (<= 10 ~a21~0) .cse11) (and .cse1 (<= 7 ~a21~0) .cse5 .cse9 .cse6) (and .cse1 (= 7 ~a21~0) .cse2 .cse3) (and .cse1 .cse5 .cse6 .cse11)))) [2021-11-20 05:53:59,887 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 880) no Hoare annotation was computed. [2021-11-20 05:53:59,887 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 880) no Hoare annotation was computed. [2021-11-20 05:53:59,888 INFO L858 garLoopResultBuilder]: For program point L164(line 164) no Hoare annotation was computed. [2021-11-20 05:53:59,888 INFO L858 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2021-11-20 05:53:59,888 INFO L858 garLoopResultBuilder]: For program point L32(line 32) no Hoare annotation was computed. [2021-11-20 05:53:59,888 INFO L858 garLoopResultBuilder]: For program point L693(lines 693 880) no Hoare annotation was computed. [2021-11-20 05:53:59,888 INFO L858 garLoopResultBuilder]: For program point L363(lines 363 880) no Hoare annotation was computed. [2021-11-20 05:53:59,888 INFO L858 garLoopResultBuilder]: For program point L562(lines 562 880) no Hoare annotation was computed. [2021-11-20 05:53:59,889 INFO L858 garLoopResultBuilder]: For program point L430(lines 430 880) no Hoare annotation was computed. [2021-11-20 05:53:59,889 INFO L858 garLoopResultBuilder]: For program point L166-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,889 INFO L858 garLoopResultBuilder]: For program point L100-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,889 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 30 882) no Hoare annotation was computed. [2021-11-20 05:53:59,889 INFO L858 garLoopResultBuilder]: For program point L233(lines 233 880) no Hoare annotation was computed. [2021-11-20 05:53:59,890 INFO L858 garLoopResultBuilder]: For program point L167(line 167) no Hoare annotation was computed. [2021-11-20 05:53:59,890 INFO L858 garLoopResultBuilder]: For program point L101(line 101) no Hoare annotation was computed. [2021-11-20 05:53:59,890 INFO L858 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-11-20 05:53:59,894 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:53:59,896 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:53:59,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:53:59 BoogieIcfgContainer [2021-11-20 05:53:59,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:53:59,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:53:59,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:53:59,925 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:53:59,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:52:53" (3/4) ... [2021-11-20 05:53:59,929 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 05:53:59,958 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-20 05:53:59,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-20 05:53:59,986 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 05:53:59,988 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 05:54:00,196 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 05:54:00,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:54:00,198 INFO L158 Benchmark]: Toolchain (without parser) took 69568.13ms. Allocated memory was 127.9MB in the beginning and 824.2MB in the end (delta: 696.3MB). Free memory was 91.4MB in the beginning and 713.6MB in the end (delta: -622.2MB). Peak memory consumption was 546.7MB. Max. memory is 16.1GB. [2021-11-20 05:54:00,200 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory was 52.9MB in the beginning and 52.9MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:54:00,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 919.22ms. Allocated memory is still 127.9MB. Free memory was 91.2MB in the beginning and 82.1MB in the end (delta: 9.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 05:54:00,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 196.53ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 72.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 05:54:00,201 INFO L158 Benchmark]: Boogie Preprocessor took 175.56ms. Allocated memory is still 127.9MB. Free memory was 72.2MB in the beginning and 66.5MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-20 05:54:00,202 INFO L158 Benchmark]: RCFGBuilder took 1859.53ms. Allocated memory is still 127.9MB. Free memory was 66.5MB in the beginning and 89.1MB in the end (delta: -22.6MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2021-11-20 05:54:00,205 INFO L158 Benchmark]: TraceAbstraction took 66130.73ms. Allocated memory was 127.9MB in the beginning and 824.2MB in the end (delta: 696.3MB). Free memory was 89.1MB in the beginning and 244.8MB in the end (delta: -155.7MB). Peak memory consumption was 549.8MB. Max. memory is 16.1GB. [2021-11-20 05:54:00,206 INFO L158 Benchmark]: Witness Printer took 272.87ms. Allocated memory is still 824.2MB. Free memory was 244.8MB in the beginning and 713.6MB in the end (delta: -468.8MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-11-20 05:54:00,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 81.8MB. Free memory was 52.9MB in the beginning and 52.9MB in the end (delta: 26.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 919.22ms. Allocated memory is still 127.9MB. Free memory was 91.2MB in the beginning and 82.1MB in the end (delta: 9.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 196.53ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 72.2MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 175.56ms. Allocated memory is still 127.9MB. Free memory was 72.2MB in the beginning and 66.5MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1859.53ms. Allocated memory is still 127.9MB. Free memory was 66.5MB in the beginning and 89.1MB in the end (delta: -22.6MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * TraceAbstraction took 66130.73ms. Allocated memory was 127.9MB in the beginning and 824.2MB in the end (delta: 696.3MB). Free memory was 89.1MB in the beginning and 244.8MB in the end (delta: -155.7MB). Peak memory consumption was 549.8MB. Max. memory is 16.1GB. * Witness Printer took 272.87ms. Allocated memory is still 824.2MB. Free memory was 244.8MB in the beginning and 713.6MB in the end (delta: -468.8MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 128]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.0s, OverallIterations: 23, TraceHistogramMax: 17, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.5s, AutomataDifference: 21.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2382 SdHoareTripleChecker+Valid, 18.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2382 mSDsluCounter, 2438 SdHoareTripleChecker+Invalid, 15.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 157 mSDsCounter, 1673 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13535 IncrementalHoareTripleChecker+Invalid, 15208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1673 mSolverCounterUnsat, 2281 mSDtfsCounter, 13535 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7660 GetRequests, 7598 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6590occurred in iteration=17, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 4922 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 106 NumberOfFragments, 347 HoareAnnotationTreeSize, 3 FomulaSimplifications, 3548 FormulaSimplificationTreeSizeReduction, 1.7s HoareSimplificationTime, 3 FomulaSimplificationsInter, 7878 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 1.2s SsaConstructionTime, 4.1s SatisfiabilityAnalysisTime, 30.9s InterpolantComputationTime, 25754 NumberOfCodeBlocks, 25754 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 26496 ConstructedInterpolants, 0 QuantifiedInterpolants, 77384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 8565 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 32 InterpolantComputations, 22 PerfectInterpolantSequences, 89412/91518 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((((((((9 <= a21 && a24 == 1) && a15 <= 8) && 49 + a12 <= 0) || ((a24 == 1 && a15 <= 7) && !(7 == a15))) || (((a21 <= 9 && a24 == 1) && a15 <= 7) && 0 < a12 + 43)) || ((a24 == 1 && a15 <= 7) && a21 <= 8)) || (((a24 == 1 && 80 < a12) && a21 == 10) && 7 == a15)) || ((a21 <= 6 && a15 <= 7) && 49 + a12 <= 0)) || (((a24 == 1 && 8 <= a21) && a21 <= 8) && a12 <= 599999)) || ((((9 <= a21 && a12 + 43 <= 0) && a24 == 1) && a15 <= 8) && !(7 == a15))) || (((a24 == 1 && !(7 == a15)) && 10 <= a21) && a12 <= 586307)) || ((((a24 == 1 && 7 <= a21) && !(7 == a15)) && a12 <= 599999) && 0 < a12 + 43)) || (((a24 == 1 && 7 == a21) && a15 <= 8) && 49 + a12 <= 0)) || (((a24 == 1 && !(7 == a15)) && 0 < a12 + 43) && a12 <= 586307) - InvariantResult [Line: 884]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: (((((((((((((9 <= a21 && a24 == 1) && a15 <= 8) && 49 + a12 <= 0) || ((a24 == 1 && a15 <= 7) && !(7 == a15))) || (((a21 <= 9 && a24 == 1) && a15 <= 7) && 0 < a12 + 43)) || ((a24 == 1 && a15 <= 7) && a21 <= 8)) || (((a24 == 1 && 80 < a12) && a21 == 10) && 7 == a15)) || ((a21 <= 6 && a15 <= 7) && 49 + a12 <= 0)) || (((a24 == 1 && 8 <= a21) && a21 <= 8) && a12 <= 599999)) || ((((9 <= a21 && a12 + 43 <= 0) && a24 == 1) && a15 <= 8) && !(7 == a15))) || (((a24 == 1 && !(7 == a15)) && 10 <= a21) && a12 <= 586307)) || ((((a24 == 1 && 7 <= a21) && !(7 == a15)) && a12 <= 599999) && 0 < a12 + 43)) || (((a24 == 1 && 7 == a21) && a15 <= 8) && 49 + a12 <= 0)) || (((a24 == 1 && !(7 == a15)) && 0 < a12 + 43) && a12 <= 586307) RESULT: Ultimate proved your program to be correct! [2021-11-20 05:54:00,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89886cf7-a94e-4733-bb7a-0c8166dd4f20/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE