./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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 c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:56:03,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:56:03,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:56:03,122 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:56:03,123 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:56:03,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:56:03,126 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:56:03,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:56:03,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:56:03,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:56:03,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:56:03,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:56:03,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:56:03,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:56:03,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:56:03,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:56:03,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:56:03,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:56:03,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:56:03,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:56:03,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:56:03,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:56:03,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:56:03,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:56:03,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:56:03,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:56:03,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:56:03,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:56:03,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:56:03,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:56:03,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:56:03,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:56:03,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:56:03,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:56:03,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:56:03,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:56:03,168 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:56:03,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:56:03,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:56:03,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:56:03,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:56:03,171 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:56:03,197 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:56:03,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:56:03,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:56:03,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:56:03,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:56:03,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:56:03,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:56:03,200 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:56:03,200 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:56:03,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:56:03,201 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:56:03,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:56:03,201 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:56:03,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:56:03,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:56:03,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:56:03,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:56:03,202 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:56:03,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:56:03,202 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:56:03,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:56:03,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:56:03,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:56:03,203 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:56:03,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:03,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:56:03,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:56:03,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:56:03,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:56:03,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:56:03,205 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:56:03,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:56:03,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:56:03,205 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:56:03,205 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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2021-11-20 05:56:03,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:56:03,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:56:03,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:56:03,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:56:03,481 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:56:03,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-20 05:56:03,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/931f84c1f/e5516834f4c347e69169355be57d3d9c/FLAG82b3e5c0f [2021-11-20 05:56:04,083 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:56:04,083 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-20 05:56:04,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/931f84c1f/e5516834f4c347e69169355be57d3d9c/FLAG82b3e5c0f [2021-11-20 05:56:04,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/931f84c1f/e5516834f4c347e69169355be57d3d9c [2021-11-20 05:56:04,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:56:04,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:56:04,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:04,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:56:04,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:56:04,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c263114 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04, skipping insertion in model container [2021-11-20 05:56:04,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:56:04,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:56:04,649 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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-20 05:56:04,702 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:04,710 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:56:04,724 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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-20 05:56:04,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:04,779 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:56:04,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04 WrapperNode [2021-11-20 05:56:04,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:04,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:04,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:56:04,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:56:04,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,855 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 148 [2021-11-20 05:56:04,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:04,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:56:04,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:56:04,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:56:04,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:56:04,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:56:04,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:56:04,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:56:04,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (1/1) ... [2021-11-20 05:56:04,935 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:04,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:56:04,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:56:05,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:56:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:56:05,014 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 05:56:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 05:56:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:56:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:56:05,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:56:05,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:56:05,088 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:56:05,089 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:56:05,439 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:56:05,447 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:56:05,447 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 05:56:05,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:05 BoogieIcfgContainer [2021-11-20 05:56:05,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:56:05,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:56:05,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:56:05,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:56:05,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:56:04" (1/3) ... [2021-11-20 05:56:05,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aab107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:05, skipping insertion in model container [2021-11-20 05:56:05,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:04" (2/3) ... [2021-11-20 05:56:05,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aab107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:05, skipping insertion in model container [2021-11-20 05:56:05,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:05" (3/3) ... [2021-11-20 05:56:05,458 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2021-11-20 05:56:05,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:56:05,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:56:05,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:56:05,521 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 05:56:05,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:56:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:56:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:56:05,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:05,548 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:05,549 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash -760882007, now seen corresponding path program 1 times [2021-11-20 05:56:05,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:05,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33642437] [2021-11-20 05:56:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:05,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:05,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:56:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:56:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 05:56:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:05,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:05,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33642437] [2021-11-20 05:56:05,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33642437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:05,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834513292] [2021-11-20 05:56:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:05,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:05,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:05,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:05,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 05:56:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:06,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 05:56:06,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 05:56:06,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:06,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834513292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:06,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:56:06,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 16 [2021-11-20 05:56:06,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50698543] [2021-11-20 05:56:06,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:06,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:56:06,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:56:06,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:56:06,473 INFO L87 Difference]: Start difference. First operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:56:07,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:07,103 INFO L93 Difference]: Finished difference Result 255 states and 424 transitions. [2021-11-20 05:56:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:56:07,105 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 32 [2021-11-20 05:56:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:07,117 INFO L225 Difference]: With dead ends: 255 [2021-11-20 05:56:07,118 INFO L226 Difference]: Without dead ends: 170 [2021-11-20 05:56:07,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:56:07,126 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 220 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:07,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 1875 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:56:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-20 05:56:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 103. [2021-11-20 05:56:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.4482758620689655) internal successors, (126), 90 states have internal predecessors, (126), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:56:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 153 transitions. [2021-11-20 05:56:07,183 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 153 transitions. Word has length 32 [2021-11-20 05:56:07,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:07,184 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 153 transitions. [2021-11-20 05:56:07,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 05:56:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 153 transitions. [2021-11-20 05:56:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:56:07,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:07,188 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2021-11-20 05:56:07,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:07,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 05:56:07,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:07,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1139634014, now seen corresponding path program 1 times [2021-11-20 05:56:07,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:07,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946379420] [2021-11-20 05:56:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:07,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:07,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:56:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:56:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 05:56:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:07,641 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:07,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:07,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946379420] [2021-11-20 05:56:07,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946379420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:07,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186178050] [2021-11-20 05:56:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:07,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 05:56:07,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:07,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 05:56:07,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 05:56:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:07,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 05:56:07,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 05:56:07,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:08,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186178050] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:08,272 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 05:56:08,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 11] total 18 [2021-11-20 05:56:08,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809490584] [2021-11-20 05:56:08,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:08,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:56:08,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:08,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:56:08,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:56:08,275 INFO L87 Difference]: Start difference. First operand 103 states and 153 transitions. Second operand has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-20 05:56:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:08,897 INFO L93 Difference]: Finished difference Result 273 states and 422 transitions. [2021-11-20 05:56:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:56:08,898 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 36 [2021-11-20 05:56:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:08,905 INFO L225 Difference]: With dead ends: 273 [2021-11-20 05:56:08,905 INFO L226 Difference]: Without dead ends: 208 [2021-11-20 05:56:08,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=825, Unknown=0, NotChecked=0, Total=992 [2021-11-20 05:56:08,912 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 427 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:08,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 1009 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:56:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-20 05:56:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 103. [2021-11-20 05:56:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 87 states have (on average 1.4022988505747127) internal successors, (122), 90 states have internal predecessors, (122), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:56:08,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 149 transitions. [2021-11-20 05:56:08,944 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 149 transitions. Word has length 36 [2021-11-20 05:56:08,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:08,944 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 149 transitions. [2021-11-20 05:56:08,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 15 states have internal predecessors, (40), 5 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-20 05:56:08,945 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 149 transitions. [2021-11-20 05:56:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 05:56:08,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:08,947 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:08,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:09,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-20 05:56:09,173 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:09,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:09,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1276417986, now seen corresponding path program 1 times [2021-11-20 05:56:09,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:09,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447153700] [2021-11-20 05:56:09,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:09,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:56:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:56:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 05:56:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:09,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447153700] [2021-11-20 05:56:09,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447153700] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:09,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:09,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 05:56:09,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170382082] [2021-11-20 05:56:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:09,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:09,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:09,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:09,341 INFO L87 Difference]: Start difference. First operand 103 states and 149 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:09,406 INFO L93 Difference]: Finished difference Result 231 states and 341 transitions. [2021-11-20 05:56:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:09,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-20 05:56:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:09,411 INFO L225 Difference]: With dead ends: 231 [2021-11-20 05:56:09,411 INFO L226 Difference]: Without dead ends: 170 [2021-11-20 05:56:09,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:09,413 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 51 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:09,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 446 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-20 05:56:09,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2021-11-20 05:56:09,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.3888888888888888) internal successors, (200), 147 states have internal predecessors, (200), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (22), 19 states have call predecessors, (22), 16 states have call successors, (22) [2021-11-20 05:56:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 239 transitions. [2021-11-20 05:56:09,431 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 239 transitions. Word has length 40 [2021-11-20 05:56:09,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:09,432 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 239 transitions. [2021-11-20 05:56:09,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,432 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 239 transitions. [2021-11-20 05:56:09,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 05:56:09,434 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:09,435 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:09,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:56:09,435 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -596359616, now seen corresponding path program 1 times [2021-11-20 05:56:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:09,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954175374] [2021-11-20 05:56:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:09,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:56:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:56:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-20 05:56:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:09,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:09,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954175374] [2021-11-20 05:56:09,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954175374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:09,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:09,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 05:56:09,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70850047] [2021-11-20 05:56:09,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:09,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:56:09,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:56:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:09,528 INFO L87 Difference]: Start difference. First operand 166 states and 239 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:09,617 INFO L93 Difference]: Finished difference Result 216 states and 311 transitions. [2021-11-20 05:56:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:56:09,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-20 05:56:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:09,620 INFO L225 Difference]: With dead ends: 216 [2021-11-20 05:56:09,620 INFO L226 Difference]: Without dead ends: 161 [2021-11-20 05:56:09,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:56:09,622 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 70 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:09,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 520 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-20 05:56:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 157. [2021-11-20 05:56:09,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.364963503649635) internal successors, (187), 140 states have internal predecessors, (187), 15 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (20), 17 states have call predecessors, (20), 14 states have call successors, (20) [2021-11-20 05:56:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 222 transitions. [2021-11-20 05:56:09,637 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 222 transitions. Word has length 40 [2021-11-20 05:56:09,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:09,638 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 222 transitions. [2021-11-20 05:56:09,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 222 transitions. [2021-11-20 05:56:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 05:56:09,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:09,641 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:09,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:56:09,641 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2082074321, now seen corresponding path program 1 times [2021-11-20 05:56:09,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:09,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445917576] [2021-11-20 05:56:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:09,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:56:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:56:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 05:56:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:09,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:09,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445917576] [2021-11-20 05:56:09,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445917576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:09,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:09,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:56:09,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482221404] [2021-11-20 05:56:09,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:09,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:09,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:09,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:09,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:09,689 INFO L87 Difference]: Start difference. First operand 157 states and 222 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:09,712 INFO L93 Difference]: Finished difference Result 205 states and 294 transitions. [2021-11-20 05:56:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:56:09,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-20 05:56:09,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:09,714 INFO L225 Difference]: With dead ends: 205 [2021-11-20 05:56:09,715 INFO L226 Difference]: Without dead ends: 163 [2021-11-20 05:56:09,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 05:56:09,716 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 48 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:09,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 296 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:09,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-20 05:56:09,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 137. [2021-11-20 05:56:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.322314049586777) internal successors, (160), 122 states have internal predecessors, (160), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:56:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 187 transitions. [2021-11-20 05:56:09,729 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 187 transitions. Word has length 43 [2021-11-20 05:56:09,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:09,729 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 187 transitions. [2021-11-20 05:56:09,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 187 transitions. [2021-11-20 05:56:09,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 05:56:09,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:09,732 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:09,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:56:09,733 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:09,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:09,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1563397194, now seen corresponding path program 1 times [2021-11-20 05:56:09,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:09,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972932600] [2021-11-20 05:56:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:09,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:56:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:56:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 05:56:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:09,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:09,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972932600] [2021-11-20 05:56:09,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972932600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:09,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:09,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 05:56:09,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906260075] [2021-11-20 05:56:09,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:09,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:09,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:09,796 INFO L87 Difference]: Start difference. First operand 137 states and 187 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:09,822 INFO L93 Difference]: Finished difference Result 154 states and 208 transitions. [2021-11-20 05:56:09,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:56:09,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-11-20 05:56:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:09,827 INFO L225 Difference]: With dead ends: 154 [2021-11-20 05:56:09,827 INFO L226 Difference]: Without dead ends: 147 [2021-11-20 05:56:09,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 05:56:09,831 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 17 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:09,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 297 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-20 05:56:09,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 141. [2021-11-20 05:56:09,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 125 states have (on average 1.312) internal successors, (164), 126 states have internal predecessors, (164), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:56:09,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 191 transitions. [2021-11-20 05:56:09,843 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 191 transitions. Word has length 44 [2021-11-20 05:56:09,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:09,845 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 191 transitions. [2021-11-20 05:56:09,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,845 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 191 transitions. [2021-11-20 05:56:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 05:56:09,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:09,849 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:09,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:56:09,849 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:09,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -956562740, now seen corresponding path program 1 times [2021-11-20 05:56:09,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:09,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412855171] [2021-11-20 05:56:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:09,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 05:56:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 05:56:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-20 05:56:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:09,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:56:09,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412855171] [2021-11-20 05:56:09,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412855171] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:09,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:09,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 05:56:09,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578033524] [2021-11-20 05:56:09,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:09,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:56:09,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:56:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:56:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:56:09,948 INFO L87 Difference]: Start difference. First operand 141 states and 191 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:09,974 INFO L93 Difference]: Finished difference Result 148 states and 197 transitions. [2021-11-20 05:56:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:56:09,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-11-20 05:56:09,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:09,976 INFO L225 Difference]: With dead ends: 148 [2021-11-20 05:56:09,977 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 05:56:09,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:09,978 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 5 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:09,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 385 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:09,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 05:56:09,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2021-11-20 05:56:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 121 states have (on average 1.2975206611570247) internal successors, (157), 122 states have internal predecessors, (157), 11 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (16), 13 states have call predecessors, (16), 10 states have call successors, (16) [2021-11-20 05:56:09,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2021-11-20 05:56:09,990 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 44 [2021-11-20 05:56:09,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:09,991 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2021-11-20 05:56:09,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:09,991 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2021-11-20 05:56:09,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 05:56:09,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:09,995 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:09,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:56:09,995 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:09,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash -261265623, now seen corresponding path program 2 times [2021-11-20 05:56:09,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:56:09,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012541961] [2021-11-20 05:56:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:09,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:56:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:56:10,059 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:56:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:56:10,123 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 05:56:10,127 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:56:10,128 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:56:10,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:56:10,134 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:10,137 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:56:10,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:56:10 BoogieIcfgContainer [2021-11-20 05:56:10,217 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:56:10,218 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:56:10,218 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:56:10,218 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:56:10,219 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:05" (3/4) ... [2021-11-20 05:56:10,222 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:56:10,222 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:56:10,223 INFO L158 Benchmark]: Toolchain (without parser) took 5795.02ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 67.7MB in the beginning and 107.2MB in the end (delta: -39.4MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2021-11-20 05:56:10,223 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 55.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:56:10,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 338.00ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 74.4MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:56:10,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.01ms. Allocated memory is still 102.8MB. Free memory was 74.4MB in the beginning and 72.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:56:10,224 INFO L158 Benchmark]: Boogie Preprocessor took 63.17ms. Allocated memory is still 102.8MB. Free memory was 72.7MB in the beginning and 71.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:56:10,225 INFO L158 Benchmark]: RCFGBuilder took 526.48ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 56.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 05:56:10,225 INFO L158 Benchmark]: TraceAbstraction took 4766.10ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 56.3MB in the beginning and 108.2MB in the end (delta: -51.9MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-20 05:56:10,226 INFO L158 Benchmark]: Witness Printer took 4.26ms. Allocated memory is still 159.4MB. Free memory was 108.2MB in the beginning and 107.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:56:10,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 55.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 338.00ms. Allocated memory is still 102.8MB. Free memory was 67.5MB in the beginning and 74.4MB in the end (delta: -6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.01ms. Allocated memory is still 102.8MB. Free memory was 74.4MB in the beginning and 72.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.17ms. Allocated memory is still 102.8MB. Free memory was 72.7MB in the beginning and 71.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 526.48ms. Allocated memory is still 102.8MB. Free memory was 71.0MB in the beginning and 56.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 4766.10ms. Allocated memory was 102.8MB in the beginning and 159.4MB in the end (delta: 56.6MB). Free memory was 56.3MB in the beginning and 108.2MB in the end (delta: -51.9MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Witness Printer took 4.26ms. Allocated memory is still 159.4MB. Free memory was 108.2MB in the beginning and 107.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add ; [L234] unsigned int zero ; [L235] int sa ; [L236] int sb ; [L237] int tmp ; [L238] int tmp___0 ; [L239] int tmp___1 ; [L240] int tmp___2 ; [L241] int tmp___3 ; [L242] int tmp___4 ; [L243] int tmp___5 ; [L244] int tmp___6 ; [L245] int tmp___7 ; [L246] int tmp___8 ; [L247] int tmp___9 ; [L248] int __retres23 ; VAL [ea=0, eb=0] [L252] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L252] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=0, eb=0] [L252] zero = base2flt(0, 0) [L253] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=16777215, e=0, res=16777215] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-72057589726183425, __retres4=16777215, e=0, res=16777215] [L253] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-72057589726183425, ea=0, eb=0, ma=16777216, zero=0] [L253] a = base2flt(ma, ea) [L254] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=4294967295, e=0, res=4294967295] [L81] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-72057589742960641, __retres4=4294967295, e=0, res=4294967295] [L254] RET, EXPR base2flt(mb, eb) VAL [a=16777215, base2flt(mb, eb)=-72057589742960641, ea=0, eb=0, ma=16777216, mb=16777216, zero=0] [L254] b = base2flt(mb, eb) [L256] COND FALSE !(a < zero) VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, zero=0] [L259] COND TRUE a > zero [L260] tmp = 1 VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, tmp=1, zero=0] [L264] sa = tmp VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L266] COND FALSE !(b < zero) VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L269] COND TRUE b > zero [L270] tmp___0 = 1 VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L274] sb = tmp___0 VAL [a=16777215, b=4294967295, ea=0, eb=0, ma=16777216, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L277] CALL addflt(a, b) [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; VAL [\old(a)=16777215, \old(b)=4294967295, a=16777215, b=4294967295] [L95] COND TRUE a < b [L96] tmp = a [L97] a = b [L98] b = tmp VAL [\old(a)=16777215, \old(b)=4294967295, a=4294967295, b=16777215, tmp=16777215] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) [L113] eb = (int )(b >> 24U) - 128 [L114] mb = mb | (1U << 24U) VAL [\old(a)=16777215, \old(b)=4294967295, a=4294967295, b=16777215, ea=127, eb=128, tmp=16777215] [L115] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 849 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 838 mSDsluCounter, 4828 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4049 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 998 IncrementalHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 779 mSDtfsCounter, 998 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 249 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=3, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 216 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 391 NumberOfCodeBlocks, 391 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 823 SizeOfPredicates, 10 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 128/165 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:56:10,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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 c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:56:12,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:56:12,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:56:12,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:56:12,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:56:12,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:56:12,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:56:12,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:56:12,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:56:12,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:56:12,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:56:12,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:56:12,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:56:12,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:56:12,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:56:12,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:56:12,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:56:12,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:56:12,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:56:12,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:56:12,779 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:56:12,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:56:12,783 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:56:12,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:56:12,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:56:12,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:56:12,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:56:12,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:56:12,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:56:12,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:56:12,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:56:12,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:56:12,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:56:12,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:56:12,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:56:12,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:56:12,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:56:12,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:56:12,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:56:12,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:56:12,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:56:12,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 05:56:12,837 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:56:12,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:56:12,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:56:12,838 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:56:12,839 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:56:12,839 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:56:12,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:56:12,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:56:12,840 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:56:12,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:56:12,841 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:56:12,841 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:56:12,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:56:12,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:56:12,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:56:12,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:56:12,842 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:56:12,843 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:56:12,843 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:56:12,843 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:56:12,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:56:12,843 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:56:12,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:56:12,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:56:12,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:56:12,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:56:12,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:12,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:56:12,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:56:12,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:56:12,846 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:56:12,846 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:56:12,846 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:56:12,847 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:56:12,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:56:12,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:56:12,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:56:12,847 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2021-11-20 05:56:13,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:56:13,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:56:13,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:56:13,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:56:13,237 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:56:13,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-20 05:56:13,304 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/1a3b6afe5/1404e4478f5847c9abc9d6812b52ff06/FLAG8d1145a06 [2021-11-20 05:56:13,843 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:56:13,843 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-20 05:56:13,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/1a3b6afe5/1404e4478f5847c9abc9d6812b52ff06/FLAG8d1145a06 [2021-11-20 05:56:14,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/data/1a3b6afe5/1404e4478f5847c9abc9d6812b52ff06 [2021-11-20 05:56:14,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:56:14,185 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:56:14,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:14,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:56:14,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:56:14,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a6d565e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14, skipping insertion in model container [2021-11-20 05:56:14,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:56:14,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:56:14,367 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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-20 05:56:14,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:14,454 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:56:14,465 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_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-20 05:56:14,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:56:14,513 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:56:14,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14 WrapperNode [2021-11-20 05:56:14,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:56:14,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:14,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:56:14,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:56:14,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,563 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 146 [2021-11-20 05:56:14,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:56:14,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:56:14,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:56:14,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:56:14,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:56:14,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:56:14,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:56:14,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:56:14,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (1/1) ... [2021-11-20 05:56:14,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:56:14,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:56:14,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:56:14,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:56:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:56:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 05:56:14,725 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 05:56:14,725 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 05:56:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:56:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:56:14,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 05:56:14,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 05:56:14,800 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:56:14,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:56:15,130 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:56:15,145 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:56:15,147 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 05:56:15,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:15 BoogieIcfgContainer [2021-11-20 05:56:15,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:56:15,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:56:15,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:56:15,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:56:15,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:56:14" (1/3) ... [2021-11-20 05:56:15,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1358e806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:15, skipping insertion in model container [2021-11-20 05:56:15,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:56:14" (2/3) ... [2021-11-20 05:56:15,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1358e806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:56:15, skipping insertion in model container [2021-11-20 05:56:15,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:15" (3/3) ... [2021-11-20 05:56:15,160 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2021-11-20 05:56:15,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:56:15,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:56:15,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:56:15,251 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 05:56:15,252 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 05:56:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:56:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:56:15,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:15,283 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:15,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -760882007, now seen corresponding path program 1 times [2021-11-20 05:56:15,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:15,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929404028] [2021-11-20 05:56:15,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:15,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:15,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:15,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:15,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:56:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:15,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:56:15,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:15,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:15,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:15,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929404028] [2021-11-20 05:56:15,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929404028] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:15,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:15,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-20 05:56:15,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309827281] [2021-11-20 05:56:15,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:15,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:15,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:15,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:15,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:15,900 INFO L87 Difference]: Start difference. First operand has 72 states, 60 states have (on average 1.6) internal successors, (96), 63 states have internal predecessors, (96), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:16,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:16,021 INFO L93 Difference]: Finished difference Result 194 states and 322 transitions. [2021-11-20 05:56:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:16,025 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-20 05:56:16,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:16,038 INFO L225 Difference]: With dead ends: 194 [2021-11-20 05:56:16,038 INFO L226 Difference]: Without dead ends: 117 [2021-11-20 05:56:16,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:16,046 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 62 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:16,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 758 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:16,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-11-20 05:56:16,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 80. [2021-11-20 05:56:16,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.4545454545454546) internal successors, (96), 68 states have internal predecessors, (96), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (14), 10 states have call predecessors, (14), 9 states have call successors, (14) [2021-11-20 05:56:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 120 transitions. [2021-11-20 05:56:16,094 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 120 transitions. Word has length 32 [2021-11-20 05:56:16,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:16,094 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 120 transitions. [2021-11-20 05:56:16,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 120 transitions. [2021-11-20 05:56:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:56:16,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:16,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:16,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-20 05:56:16,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:16,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:16,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash 975798983, now seen corresponding path program 1 times [2021-11-20 05:56:16,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:16,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508636270] [2021-11-20 05:56:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:16,315 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:16,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:16,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:16,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:56:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:16,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:56:16,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:16,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:16,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:16,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508636270] [2021-11-20 05:56:16,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508636270] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:16,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:16,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-20 05:56:16,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334762330] [2021-11-20 05:56:16,683 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:16,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:16,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:16,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:16,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:16,686 INFO L87 Difference]: Start difference. First operand 80 states and 120 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:16,810 INFO L93 Difference]: Finished difference Result 169 states and 257 transitions. [2021-11-20 05:56:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:16,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-11-20 05:56:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:16,814 INFO L225 Difference]: With dead ends: 169 [2021-11-20 05:56:16,814 INFO L226 Difference]: Without dead ends: 127 [2021-11-20 05:56:16,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:16,816 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 53 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:16,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 451 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:16,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-20 05:56:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123. [2021-11-20 05:56:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 105 states have (on average 1.457142857142857) internal successors, (153), 106 states have internal predecessors, (153), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (18), 16 states have call predecessors, (18), 13 states have call successors, (18) [2021-11-20 05:56:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 185 transitions. [2021-11-20 05:56:16,852 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 185 transitions. Word has length 36 [2021-11-20 05:56:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:16,853 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 185 transitions. [2021-11-20 05:56:16,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 185 transitions. [2021-11-20 05:56:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-20 05:56:16,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:16,860 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:16,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 05:56:17,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:17,061 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:17,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1655857353, now seen corresponding path program 1 times [2021-11-20 05:56:17,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:17,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677946584] [2021-11-20 05:56:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:17,062 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:17,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:17,065 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:17,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:56:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:17,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:56:17,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:17,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:17,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:17,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:17,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677946584] [2021-11-20 05:56:17,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677946584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:17,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:17,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-20 05:56:17,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710831271] [2021-11-20 05:56:17,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:17,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:56:17,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:17,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:56:17,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:17,443 INFO L87 Difference]: Start difference. First operand 123 states and 185 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:17,587 INFO L93 Difference]: Finished difference Result 180 states and 272 transitions. [2021-11-20 05:56:17,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:56:17,591 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-11-20 05:56:17,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:17,593 INFO L225 Difference]: With dead ends: 180 [2021-11-20 05:56:17,593 INFO L226 Difference]: Without dead ends: 141 [2021-11-20 05:56:17,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:56:17,596 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 105 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:17,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 536 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-20 05:56:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 114. [2021-11-20 05:56:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 99 states have internal predecessors, (141), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (16), 14 states have call predecessors, (16), 11 states have call successors, (16) [2021-11-20 05:56:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 169 transitions. [2021-11-20 05:56:17,624 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 169 transitions. Word has length 36 [2021-11-20 05:56:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 169 transitions. [2021-11-20 05:56:17,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 169 transitions. [2021-11-20 05:56:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-20 05:56:17,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:17,627 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:17,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:17,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:17,833 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:17,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash -371678158, now seen corresponding path program 1 times [2021-11-20 05:56:17,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:17,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613449892] [2021-11-20 05:56:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:17,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:17,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:17,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:56:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:56:17,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:18,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:18,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:18,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:18,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613449892] [2021-11-20 05:56:18,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613449892] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:18,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:18,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-11-20 05:56:18,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198795136] [2021-11-20 05:56:18,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:18,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:56:18,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:56:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:56:18,187 INFO L87 Difference]: Start difference. First operand 114 states and 169 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:18,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:18,377 INFO L93 Difference]: Finished difference Result 312 states and 474 transitions. [2021-11-20 05:56:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:56:18,379 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-11-20 05:56:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:18,383 INFO L225 Difference]: With dead ends: 312 [2021-11-20 05:56:18,386 INFO L226 Difference]: Without dead ends: 237 [2021-11-20 05:56:18,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:56:18,392 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 197 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:18,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 642 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:18,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-20 05:56:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 178. [2021-11-20 05:56:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 156 states have (on average 1.3846153846153846) internal successors, (216), 155 states have internal predecessors, (216), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2021-11-20 05:56:18,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 258 transitions. [2021-11-20 05:56:18,444 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 258 transitions. Word has length 40 [2021-11-20 05:56:18,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:18,447 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 258 transitions. [2021-11-20 05:56:18,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:18,447 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 258 transitions. [2021-11-20 05:56:18,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 05:56:18,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:18,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:18,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:18,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:18,657 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:18,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2082074321, now seen corresponding path program 1 times [2021-11-20 05:56:18,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:18,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641767120] [2021-11-20 05:56:18,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:18,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:18,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:18,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:18,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:56:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:18,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:56:18,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:18,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:18,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:18,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641767120] [2021-11-20 05:56:18,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641767120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:18,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:18,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:56:18,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040590515] [2021-11-20 05:56:18,923 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:18,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:18,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:18,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:18,925 INFO L87 Difference]: Start difference. First operand 178 states and 258 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:18,978 INFO L93 Difference]: Finished difference Result 358 states and 526 transitions. [2021-11-20 05:56:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2021-11-20 05:56:18,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:18,983 INFO L225 Difference]: With dead ends: 358 [2021-11-20 05:56:18,983 INFO L226 Difference]: Without dead ends: 292 [2021-11-20 05:56:18,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:18,987 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 115 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:18,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 474 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-20 05:56:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 242. [2021-11-20 05:56:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 220 states have (on average 1.3227272727272728) internal successors, (291), 217 states have internal predecessors, (291), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (24), 24 states have call predecessors, (24), 17 states have call successors, (24) [2021-11-20 05:56:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 333 transitions. [2021-11-20 05:56:19,038 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 333 transitions. Word has length 43 [2021-11-20 05:56:19,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:19,038 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 333 transitions. [2021-11-20 05:56:19,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:19,039 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 333 transitions. [2021-11-20 05:56:19,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 05:56:19,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:19,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:19,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:19,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:19,261 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:19,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:19,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1563397194, now seen corresponding path program 1 times [2021-11-20 05:56:19,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:19,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229839003] [2021-11-20 05:56:19,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:19,262 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:19,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:19,263 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:19,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:56:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:19,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:56:19,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:19,519 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:19,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:19,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229839003] [2021-11-20 05:56:19,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229839003] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:19,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:56:19,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-11-20 05:56:19,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305565116] [2021-11-20 05:56:19,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:19,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:19,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:56:19,685 INFO L87 Difference]: Start difference. First operand 242 states and 333 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:20,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:20,137 INFO L93 Difference]: Finished difference Result 414 states and 593 transitions. [2021-11-20 05:56:20,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:56:20,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-11-20 05:56:20,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:20,141 INFO L225 Difference]: With dead ends: 414 [2021-11-20 05:56:20,142 INFO L226 Difference]: Without dead ends: 378 [2021-11-20 05:56:20,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:56:20,143 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 193 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:20,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 525 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:56:20,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-11-20 05:56:20,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 295. [2021-11-20 05:56:20,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.3097014925373134) internal successors, (351), 266 states have internal predecessors, (351), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (29), 29 states have call predecessors, (29), 22 states have call successors, (29) [2021-11-20 05:56:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 403 transitions. [2021-11-20 05:56:20,175 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 403 transitions. Word has length 44 [2021-11-20 05:56:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:20,176 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 403 transitions. [2021-11-20 05:56:20,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 403 transitions. [2021-11-20 05:56:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 05:56:20,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:20,178 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:20,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:20,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:20,390 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash -956562740, now seen corresponding path program 1 times [2021-11-20 05:56:20,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:20,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47270704] [2021-11-20 05:56:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:20,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:20,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:20,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:20,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:56:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:56:20,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:20,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:20,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:20,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [47270704] [2021-11-20 05:56:20,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [47270704] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:20,625 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:20,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-20 05:56:20,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482502260] [2021-11-20 05:56:20,626 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:20,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:56:20,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:20,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:56:20,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:56:20,629 INFO L87 Difference]: Start difference. First operand 295 states and 403 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:20,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:20,672 INFO L93 Difference]: Finished difference Result 302 states and 409 transitions. [2021-11-20 05:56:20,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:20,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-11-20 05:56:20,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:20,684 INFO L225 Difference]: With dead ends: 302 [2021-11-20 05:56:20,684 INFO L226 Difference]: Without dead ends: 295 [2021-11-20 05:56:20,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:56:20,686 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 6 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:20,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 674 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-20 05:56:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-11-20 05:56:20,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 268 states have (on average 1.2985074626865671) internal successors, (348), 266 states have internal predecessors, (348), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (29), 29 states have call predecessors, (29), 22 states have call successors, (29) [2021-11-20 05:56:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 400 transitions. [2021-11-20 05:56:20,708 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 400 transitions. Word has length 44 [2021-11-20 05:56:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:20,708 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 400 transitions. [2021-11-20 05:56:20,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 400 transitions. [2021-11-20 05:56:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-20 05:56:20,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:20,710 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:20,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:20,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:20,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:20,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash -3100185, now seen corresponding path program 2 times [2021-11-20 05:56:20,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:20,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412943579] [2021-11-20 05:56:20,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 05:56:20,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:20,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:20,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:20,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:56:20,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-20 05:56:20,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 05:56:20,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:56:20,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:21,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:21,353 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:21,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:21,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412943579] [2021-11-20 05:56:21,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412943579] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:21,354 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:21,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 05:56:21,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154830697] [2021-11-20 05:56:21,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:21,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:56:21,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:21,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:56:21,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:56:21,355 INFO L87 Difference]: Start difference. First operand 295 states and 400 transitions. Second operand has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:21,611 INFO L93 Difference]: Finished difference Result 452 states and 628 transitions. [2021-11-20 05:56:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:21,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2021-11-20 05:56:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:21,616 INFO L225 Difference]: With dead ends: 452 [2021-11-20 05:56:21,616 INFO L226 Difference]: Without dead ends: 450 [2021-11-20 05:56:21,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:56:21,617 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 123 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:21,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1207 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2021-11-20 05:56:21,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-11-20 05:56:21,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 299. [2021-11-20 05:56:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 271 states have (on average 1.2952029520295203) internal successors, (351), 269 states have internal predecessors, (351), 23 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (29), 29 states have call predecessors, (29), 22 states have call successors, (29) [2021-11-20 05:56:21,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 403 transitions. [2021-11-20 05:56:21,643 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 403 transitions. Word has length 44 [2021-11-20 05:56:21,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:21,643 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 403 transitions. [2021-11-20 05:56:21,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:21,644 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 403 transitions. [2021-11-20 05:56:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 05:56:21,645 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:21,646 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:21,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:21,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:21,861 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:21,862 INFO L85 PathProgramCache]: Analyzing trace with hash 561980754, now seen corresponding path program 1 times [2021-11-20 05:56:21,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:21,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181384049] [2021-11-20 05:56:21,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:21,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:21,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:21,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:21,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:56:21,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:21,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:56:21,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:22,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:22,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:22,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:22,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:22,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181384049] [2021-11-20 05:56:22,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181384049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:22,135 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:22,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:56:22,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234152645] [2021-11-20 05:56:22,136 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:22,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:22,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:22,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:22,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:22,138 INFO L87 Difference]: Start difference. First operand 299 states and 403 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:22,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:22,207 INFO L93 Difference]: Finished difference Result 648 states and 872 transitions. [2021-11-20 05:56:22,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:56:22,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-11-20 05:56:22,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:22,212 INFO L225 Difference]: With dead ends: 648 [2021-11-20 05:56:22,213 INFO L226 Difference]: Without dead ends: 596 [2021-11-20 05:56:22,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:22,214 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 93 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:22,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 501 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:22,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-20 05:56:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 318. [2021-11-20 05:56:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 289 states have (on average 1.2975778546712802) internal successors, (375), 286 states have internal predecessors, (375), 24 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (30), 30 states have call predecessors, (30), 23 states have call successors, (30) [2021-11-20 05:56:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 429 transitions. [2021-11-20 05:56:22,241 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 429 transitions. Word has length 45 [2021-11-20 05:56:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:22,241 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 429 transitions. [2021-11-20 05:56:22,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:22,242 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 429 transitions. [2021-11-20 05:56:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-20 05:56:22,243 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:22,244 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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 05:56:22,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:22,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:22,454 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:22,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:22,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2079579127, now seen corresponding path program 1 times [2021-11-20 05:56:22,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:22,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938198234] [2021-11-20 05:56:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:22,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:22,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:22,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:22,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:56:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:22,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:56:22,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:22,585 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:22,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:22,679 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:22,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:22,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938198234] [2021-11-20 05:56:22,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938198234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:22,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:22,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:56:22,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601390350] [2021-11-20 05:56:22,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:22,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:22,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:22,681 INFO L87 Difference]: Start difference. First operand 318 states and 429 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:22,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:22,713 INFO L93 Difference]: Finished difference Result 333 states and 445 transitions. [2021-11-20 05:56:22,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:56:22,714 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2021-11-20 05:56:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:22,716 INFO L225 Difference]: With dead ends: 333 [2021-11-20 05:56:22,717 INFO L226 Difference]: Without dead ends: 272 [2021-11-20 05:56:22,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 92 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 05:56:22,718 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 1 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:22,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 288 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-20 05:56:22,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-11-20 05:56:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 243 states have (on average 1.3127572016460904) internal successors, (319), 242 states have internal predecessors, (319), 24 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (28), 28 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-20 05:56:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 371 transitions. [2021-11-20 05:56:22,737 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 371 transitions. Word has length 48 [2021-11-20 05:56:22,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:22,737 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 371 transitions. [2021-11-20 05:56:22,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 371 transitions. [2021-11-20 05:56:22,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 05:56:22,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:22,739 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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 05:56:22,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-20 05:56:22,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:22,949 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:22,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:22,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1609971577, now seen corresponding path program 1 times [2021-11-20 05:56:22,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:22,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108834962] [2021-11-20 05:56:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:22,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:22,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:22,952 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:22,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:56:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:23,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:56:23,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:23,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:23,227 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:23,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:23,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108834962] [2021-11-20 05:56:23,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108834962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:23,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:23,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:56:23,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821192156] [2021-11-20 05:56:23,228 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:23,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:56:23,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:56:23,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:56:23,230 INFO L87 Difference]: Start difference. First operand 272 states and 371 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:23,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:23,370 INFO L93 Difference]: Finished difference Result 424 states and 576 transitions. [2021-11-20 05:56:23,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:23,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2021-11-20 05:56:23,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:23,385 INFO L225 Difference]: With dead ends: 424 [2021-11-20 05:56:23,385 INFO L226 Difference]: Without dead ends: 382 [2021-11-20 05:56:23,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:56:23,386 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 171 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:23,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 479 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:23,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-20 05:56:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 272. [2021-11-20 05:56:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 243 states have (on average 1.3045267489711934) internal successors, (317), 242 states have internal predecessors, (317), 24 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (28), 28 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-20 05:56:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 369 transitions. [2021-11-20 05:56:23,411 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 369 transitions. Word has length 49 [2021-11-20 05:56:23,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:23,411 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 369 transitions. [2021-11-20 05:56:23,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:23,412 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 369 transitions. [2021-11-20 05:56:23,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 05:56:23,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:23,413 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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 05:56:23,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-20 05:56:23,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:23,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash -908906999, now seen corresponding path program 1 times [2021-11-20 05:56:23,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:23,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [904138791] [2021-11-20 05:56:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:23,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:23,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:23,626 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:23,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:56:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:23,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:56:23,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:23,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:23,835 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:23,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:23,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [904138791] [2021-11-20 05:56:23,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [904138791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:23,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:23,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:56:23,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474349575] [2021-11-20 05:56:23,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:23,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:23,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:23,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:23,838 INFO L87 Difference]: Start difference. First operand 272 states and 369 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:23,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:23,930 INFO L93 Difference]: Finished difference Result 440 states and 582 transitions. [2021-11-20 05:56:23,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:56:23,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 49 [2021-11-20 05:56:23,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:23,934 INFO L225 Difference]: With dead ends: 440 [2021-11-20 05:56:23,934 INFO L226 Difference]: Without dead ends: 406 [2021-11-20 05:56:23,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 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 05:56:23,936 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 86 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:23,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 329 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:23,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-11-20 05:56:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 280. [2021-11-20 05:56:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 251 states have (on average 1.298804780876494) internal successors, (326), 250 states have internal predecessors, (326), 24 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (28), 28 states have call predecessors, (28), 23 states have call successors, (28) [2021-11-20 05:56:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 378 transitions. [2021-11-20 05:56:23,959 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 378 transitions. Word has length 49 [2021-11-20 05:56:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:23,960 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 378 transitions. [2021-11-20 05:56:23,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 378 transitions. [2021-11-20 05:56:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:56:23,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:23,961 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:23,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:24,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:24,181 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:24,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:24,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1552744902, now seen corresponding path program 1 times [2021-11-20 05:56:24,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:24,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145357161] [2021-11-20 05:56:24,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:24,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:24,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:24,182 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:24,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:56:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:24,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:56:24,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:24,374 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:24,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:24,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:24,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145357161] [2021-11-20 05:56:24,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145357161] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:24,548 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:24,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-20 05:56:24,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664744864] [2021-11-20 05:56:24,549 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:24,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-20 05:56:24,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:24,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 05:56:24,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 05:56:24,552 INFO L87 Difference]: Start difference. First operand 280 states and 378 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:25,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:25,903 INFO L93 Difference]: Finished difference Result 598 states and 826 transitions. [2021-11-20 05:56:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 05:56:25,904 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-11-20 05:56:25,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:25,907 INFO L225 Difference]: With dead ends: 598 [2021-11-20 05:56:25,910 INFO L226 Difference]: Without dead ends: 574 [2021-11-20 05:56:25,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2021-11-20 05:56:25,912 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 607 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:25,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 881 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 05:56:25,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-20 05:56:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 339. [2021-11-20 05:56:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 302 states have (on average 1.294701986754967) internal successors, (391), 303 states have internal predecessors, (391), 32 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (36), 36 states have call predecessors, (36), 31 states have call successors, (36) [2021-11-20 05:56:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 459 transitions. [2021-11-20 05:56:25,959 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 459 transitions. Word has length 50 [2021-11-20 05:56:25,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:25,960 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 459 transitions. [2021-11-20 05:56:25,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:25,960 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 459 transitions. [2021-11-20 05:56:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:56:25,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:25,962 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:25,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:26,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:26,173 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:26,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:26,174 INFO L85 PathProgramCache]: Analyzing trace with hash -963972016, now seen corresponding path program 1 times [2021-11-20 05:56:26,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:26,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995664491] [2021-11-20 05:56:26,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:26,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:26,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:26,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:26,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:56:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:26,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:56:26,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:26,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-20 05:56:26,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:26,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995664491] [2021-11-20 05:56:26,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995664491] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:26,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:26,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-20 05:56:26,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103682081] [2021-11-20 05:56:26,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:26,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 05:56:26,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 05:56:26,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:26,524 INFO L87 Difference]: Start difference. First operand 339 states and 459 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:26,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:26,689 INFO L93 Difference]: Finished difference Result 583 states and 786 transitions. [2021-11-20 05:56:26,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:56:26,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2021-11-20 05:56:26,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:26,694 INFO L225 Difference]: With dead ends: 583 [2021-11-20 05:56:26,694 INFO L226 Difference]: Without dead ends: 554 [2021-11-20 05:56:26,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:56:26,695 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 109 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:26,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 819 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-11-20 05:56:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 367. [2021-11-20 05:56:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 327 states have (on average 1.2874617737003058) internal successors, (421), 328 states have internal predecessors, (421), 35 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (39), 39 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-20 05:56:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 495 transitions. [2021-11-20 05:56:26,737 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 495 transitions. Word has length 50 [2021-11-20 05:56:26,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:26,737 INFO L470 AbstractCegarLoop]: Abstraction has 367 states and 495 transitions. [2021-11-20 05:56:26,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:26,738 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 495 transitions. [2021-11-20 05:56:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:56:26,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:26,739 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:26,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:26,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:26,950 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:26,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1182826734, now seen corresponding path program 1 times [2021-11-20 05:56:26,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:26,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442630466] [2021-11-20 05:56:26,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:26,951 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:26,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:26,953 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:26,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:56:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:27,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:56:27,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:27,093 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:27,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:27,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:27,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442630466] [2021-11-20 05:56:27,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442630466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:27,196 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:27,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:56:27,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621405774] [2021-11-20 05:56:27,197 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:27,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:27,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:27,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:27,198 INFO L87 Difference]: Start difference. First operand 367 states and 495 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:27,262 INFO L93 Difference]: Finished difference Result 433 states and 578 transitions. [2021-11-20 05:56:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:56:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-11-20 05:56:27,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:27,274 INFO L225 Difference]: With dead ends: 433 [2021-11-20 05:56:27,274 INFO L226 Difference]: Without dead ends: 396 [2021-11-20 05:56:27,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:27,277 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 138 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:27,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 378 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-20 05:56:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 371. [2021-11-20 05:56:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 331 states have (on average 1.2537764350453173) internal successors, (415), 332 states have internal predecessors, (415), 35 states have call successors, (35), 3 states have call predecessors, (35), 4 states have return successors, (39), 39 states have call predecessors, (39), 34 states have call successors, (39) [2021-11-20 05:56:27,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 489 transitions. [2021-11-20 05:56:27,310 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 489 transitions. Word has length 50 [2021-11-20 05:56:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:27,311 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 489 transitions. [2021-11-20 05:56:27,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:27,311 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 489 transitions. [2021-11-20 05:56:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-20 05:56:27,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:27,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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 05:56:27,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:27,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:27,524 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:27,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash -767329765, now seen corresponding path program 1 times [2021-11-20 05:56:27,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:27,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668591175] [2021-11-20 05:56:27,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:27,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:27,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:27,526 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:27,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:56:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:27,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:56:27,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:27,682 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-20 05:56:27,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-20 05:56:27,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:27,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668591175] [2021-11-20 05:56:27,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668591175] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 05:56:27,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 05:56:27,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-11-20 05:56:27,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700126731] [2021-11-20 05:56:27,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:27,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:27,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:27,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:56:27,804 INFO L87 Difference]: Start difference. First operand 371 states and 489 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:27,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:27,881 INFO L93 Difference]: Finished difference Result 626 states and 822 transitions. [2021-11-20 05:56:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:56:27,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2021-11-20 05:56:27,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:27,885 INFO L225 Difference]: With dead ends: 626 [2021-11-20 05:56:27,885 INFO L226 Difference]: Without dead ends: 258 [2021-11-20 05:56:27,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:27,887 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 25 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:27,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 238 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:27,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-20 05:56:27,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 246. [2021-11-20 05:56:27,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 214 states have (on average 1.219626168224299) internal successors, (261), 219 states have internal predecessors, (261), 26 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (29), 27 states have call predecessors, (29), 25 states have call successors, (29) [2021-11-20 05:56:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 316 transitions. [2021-11-20 05:56:27,910 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 316 transitions. Word has length 50 [2021-11-20 05:56:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:27,911 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 316 transitions. [2021-11-20 05:56:27,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 05:56:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 316 transitions. [2021-11-20 05:56:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 05:56:27,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:27,919 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:27,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:28,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:28,130 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:28,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1332385442, now seen corresponding path program 1 times [2021-11-20 05:56:28,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:28,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18070461] [2021-11-20 05:56:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:28,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:28,133 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:28,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 05:56:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:28,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:56:28,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:28,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:28,352 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:28,353 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:28,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18070461] [2021-11-20 05:56:28,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18070461] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:28,353 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:28,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:56:28,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21007036] [2021-11-20 05:56:28,354 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:28,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:56:28,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:28,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:56:28,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:56:28,356 INFO L87 Difference]: Start difference. First operand 246 states and 316 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:28,385 INFO L93 Difference]: Finished difference Result 255 states and 324 transitions. [2021-11-20 05:56:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:56:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2021-11-20 05:56:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:28,387 INFO L225 Difference]: With dead ends: 255 [2021-11-20 05:56:28,387 INFO L226 Difference]: Without dead ends: 214 [2021-11-20 05:56:28,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 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 05:56:28,389 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 1 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:28,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 279 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:56:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-20 05:56:28,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2021-11-20 05:56:28,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 174 states have (on average 1.2298850574712643) internal successors, (214), 180 states have internal predecessors, (214), 22 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (22), 21 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-20 05:56:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 258 transitions. [2021-11-20 05:56:28,410 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 258 transitions. Word has length 52 [2021-11-20 05:56:28,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:28,410 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 258 transitions. [2021-11-20 05:56:28,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:28,410 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 258 transitions. [2021-11-20 05:56:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-20 05:56:28,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:28,412 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:56:28,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:28,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:28,626 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:28,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash -444512686, now seen corresponding path program 1 times [2021-11-20 05:56:28,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:28,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40065770] [2021-11-20 05:56:28,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:28,627 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:28,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:28,627 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:28,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 05:56:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:28,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 05:56:28,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:28,798 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:28,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 05:56:28,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:28,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40065770] [2021-11-20 05:56:28,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40065770] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:28,952 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:28,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 05:56:28,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121840209] [2021-11-20 05:56:28,952 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:28,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:56:28,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:56:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:56:28,953 INFO L87 Difference]: Start difference. First operand 202 states and 258 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:29,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:29,841 INFO L93 Difference]: Finished difference Result 440 states and 559 transitions. [2021-11-20 05:56:29,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 05:56:29,842 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2021-11-20 05:56:29,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:29,844 INFO L225 Difference]: With dead ends: 440 [2021-11-20 05:56:29,845 INFO L226 Difference]: Without dead ends: 375 [2021-11-20 05:56:29,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=430, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:56:29,846 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 339 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:29,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 639 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:56:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-11-20 05:56:29,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 183. [2021-11-20 05:56:29,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 156 states have (on average 1.2179487179487178) internal successors, (190), 160 states have internal predecessors, (190), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 05:56:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 232 transitions. [2021-11-20 05:56:29,866 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 232 transitions. Word has length 52 [2021-11-20 05:56:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:29,867 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 232 transitions. [2021-11-20 05:56:29,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 05:56:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 232 transitions. [2021-11-20 05:56:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-20 05:56:29,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:29,868 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:29,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:30,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:30,083 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash 147478644, now seen corresponding path program 1 times [2021-11-20 05:56:30,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:30,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370391497] [2021-11-20 05:56:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:30,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:30,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:30,085 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:30,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 05:56:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:30,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:56:30,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:30,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:30,865 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:30,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:30,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370391497] [2021-11-20 05:56:30,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370391497] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:30,865 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:30,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-20 05:56:30,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398814062] [2021-11-20 05:56:30,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:30,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:56:30,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:56:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:56:30,867 INFO L87 Difference]: Start difference. First operand 183 states and 232 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:56:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:30,922 INFO L93 Difference]: Finished difference Result 192 states and 243 transitions. [2021-11-20 05:56:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:30,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 54 [2021-11-20 05:56:30,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:30,925 INFO L225 Difference]: With dead ends: 192 [2021-11-20 05:56:30,925 INFO L226 Difference]: Without dead ends: 190 [2021-11-20 05:56:30,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:56:30,926 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 8 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:30,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 750 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-11-20 05:56:30,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-20 05:56:30,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-20 05:56:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 159 states have (on average 1.2138364779874213) internal successors, (193), 166 states have internal predecessors, (193), 25 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 20 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-20 05:56:30,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 241 transitions. [2021-11-20 05:56:30,946 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 241 transitions. Word has length 54 [2021-11-20 05:56:30,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:30,946 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 241 transitions. [2021-11-20 05:56:30,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:56:30,946 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 241 transitions. [2021-11-20 05:56:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 05:56:30,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:30,948 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:30,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:31,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:31,159 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:31,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:31,159 INFO L85 PathProgramCache]: Analyzing trace with hash -36563148, now seen corresponding path program 1 times [2021-11-20 05:56:31,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:31,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1802041917] [2021-11-20 05:56:31,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:31,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:31,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:31,161 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:31,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 05:56:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:31,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:56:31,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:39,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:39,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:39,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1802041917] [2021-11-20 05:56:39,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1802041917] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:39,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:39,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-20 05:56:39,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672951721] [2021-11-20 05:56:39,950 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:39,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:56:39,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:39,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:56:39,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=135, Unknown=3, NotChecked=0, Total=182 [2021-11-20 05:56:39,951 INFO L87 Difference]: Start difference. First operand 190 states and 241 transitions. Second operand has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:56:40,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:40,046 INFO L93 Difference]: Finished difference Result 219 states and 274 transitions. [2021-11-20 05:56:40,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:56:40,047 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 55 [2021-11-20 05:56:40,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:40,049 INFO L225 Difference]: With dead ends: 219 [2021-11-20 05:56:40,049 INFO L226 Difference]: Without dead ends: 217 [2021-11-20 05:56:40,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=50, Invalid=157, Unknown=3, NotChecked=0, Total=210 [2021-11-20 05:56:40,050 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 68 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:40,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1206 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 51 Unchecked, 0.0s Time] [2021-11-20 05:56:40,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-20 05:56:40,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 187. [2021-11-20 05:56:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 159 states have (on average 1.2138364779874213) internal successors, (193), 163 states have internal predecessors, (193), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 05:56:40,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 235 transitions. [2021-11-20 05:56:40,069 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 235 transitions. Word has length 55 [2021-11-20 05:56:40,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:40,070 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 235 transitions. [2021-11-20 05:56:40,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 5 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-11-20 05:56:40,070 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 235 transitions. [2021-11-20 05:56:40,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 05:56:40,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:40,071 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:40,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:40,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:40,290 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:40,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:40,291 INFO L85 PathProgramCache]: Analyzing trace with hash 589240327, now seen corresponding path program 1 times [2021-11-20 05:56:40,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:40,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583160335] [2021-11-20 05:56:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:40,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:40,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:40,292 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:40,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 05:56:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:40,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:56:40,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:40,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 05:56:40,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:40,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583160335] [2021-11-20 05:56:40,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583160335] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:40,665 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:40,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 05:56:40,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513738511] [2021-11-20 05:56:40,665 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:40,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:56:40,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:56:40,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:56:40,666 INFO L87 Difference]: Start difference. First operand 187 states and 235 transitions. Second operand has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:56:40,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:40,796 INFO L93 Difference]: Finished difference Result 217 states and 266 transitions. [2021-11-20 05:56:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:40,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2021-11-20 05:56:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:40,798 INFO L225 Difference]: With dead ends: 217 [2021-11-20 05:56:40,798 INFO L226 Difference]: Without dead ends: 215 [2021-11-20 05:56:40,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:56:40,800 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 68 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:40,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 700 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:40,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-20 05:56:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 191. [2021-11-20 05:56:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 162 states have (on average 1.2098765432098766) internal successors, (196), 166 states have internal predecessors, (196), 22 states have call successors, (22), 5 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-20 05:56:40,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 238 transitions. [2021-11-20 05:56:40,822 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 238 transitions. Word has length 60 [2021-11-20 05:56:40,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:40,822 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 238 transitions. [2021-11-20 05:56:40,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-20 05:56:40,822 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 238 transitions. [2021-11-20 05:56:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:56:40,824 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:40,824 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:40,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:41,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:41,034 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash 921322142, now seen corresponding path program 1 times [2021-11-20 05:56:41,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:41,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583675706] [2021-11-20 05:56:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:41,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:41,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:41,036 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:41,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 05:56:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:41,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 05:56:41,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:42,244 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:42,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:43,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583675706] [2021-11-20 05:56:43,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583675706] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:43,920 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:43,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-11-20 05:56:43,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199555171] [2021-11-20 05:56:43,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:43,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 05:56:43,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 05:56:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:56:43,922 INFO L87 Difference]: Start difference. First operand 191 states and 238 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:56:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:45,153 INFO L93 Difference]: Finished difference Result 417 states and 523 transitions. [2021-11-20 05:56:45,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 05:56:45,154 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2021-11-20 05:56:45,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:45,156 INFO L225 Difference]: With dead ends: 417 [2021-11-20 05:56:45,156 INFO L226 Difference]: Without dead ends: 389 [2021-11-20 05:56:45,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 05:56:45,158 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 232 mSDsluCounter, 1102 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 539 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:45,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 1209 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 214 Invalid, 0 Unknown, 539 Unchecked, 0.4s Time] [2021-11-20 05:56:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-20 05:56:45,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 199. [2021-11-20 05:56:45,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 169 states have (on average 1.21301775147929) internal successors, (205), 173 states have internal predecessors, (205), 23 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 05:56:45,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 249 transitions. [2021-11-20 05:56:45,198 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 249 transitions. Word has length 65 [2021-11-20 05:56:45,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:45,199 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 249 transitions. [2021-11-20 05:56:45,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:56:45,199 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 249 transitions. [2021-11-20 05:56:45,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 05:56:45,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:45,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:45,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:45,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:45,413 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:45,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1450417120, now seen corresponding path program 1 times [2021-11-20 05:56:45,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:45,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534276314] [2021-11-20 05:56:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:45,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:45,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:45,415 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:45,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 05:56:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:45,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 05:56:45,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:48,570 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:48,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:49,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:49,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534276314] [2021-11-20 05:56:49,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534276314] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:49,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:49,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-20 05:56:49,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183947999] [2021-11-20 05:56:49,543 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:49,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:56:49,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:49,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:56:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=248, Unknown=1, NotChecked=0, Total=306 [2021-11-20 05:56:49,545 INFO L87 Difference]: Start difference. First operand 199 states and 249 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:56:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:51,000 INFO L93 Difference]: Finished difference Result 320 states and 400 transitions. [2021-11-20 05:56:51,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 05:56:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2021-11-20 05:56:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:51,002 INFO L225 Difference]: With dead ends: 320 [2021-11-20 05:56:51,002 INFO L226 Difference]: Without dead ends: 292 [2021-11-20 05:56:51,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=111, Invalid=488, Unknown=1, NotChecked=0, Total=600 [2021-11-20 05:56:51,004 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 187 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:51,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 871 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 228 Invalid, 0 Unknown, 321 Unchecked, 0.7s Time] [2021-11-20 05:56:51,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-20 05:56:51,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 198. [2021-11-20 05:56:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 168 states have (on average 1.2083333333333333) internal successors, (203), 172 states have internal predecessors, (203), 23 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 05:56:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 247 transitions. [2021-11-20 05:56:51,039 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 247 transitions. Word has length 65 [2021-11-20 05:56:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:51,039 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 247 transitions. [2021-11-20 05:56:51,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:56:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 247 transitions. [2021-11-20 05:56:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-20 05:56:51,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:51,041 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:51,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:51,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:51,253 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:51,253 INFO L85 PathProgramCache]: Analyzing trace with hash -957629534, now seen corresponding path program 1 times [2021-11-20 05:56:51,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:51,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628645303] [2021-11-20 05:56:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:51,254 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:51,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:51,255 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:51,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-20 05:56:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:51,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 05:56:51,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:53,271 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-20 05:56:53,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-20 05:56:55,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:55,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628645303] [2021-11-20 05:56:55,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628645303] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:55,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:55,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-11-20 05:56:55,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721550633] [2021-11-20 05:56:55,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:55,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-20 05:56:55,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:55,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-20 05:56:55,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-11-20 05:56:55,459 INFO L87 Difference]: Start difference. First operand 198 states and 247 transitions. Second operand has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:56:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:55,963 INFO L93 Difference]: Finished difference Result 274 states and 343 transitions. [2021-11-20 05:56:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 05:56:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 66 [2021-11-20 05:56:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:55,966 INFO L225 Difference]: With dead ends: 274 [2021-11-20 05:56:55,966 INFO L226 Difference]: Without dead ends: 246 [2021-11-20 05:56:55,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2021-11-20 05:56:55,967 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 25 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:55,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 1244 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 191 Unchecked, 0.1s Time] [2021-11-20 05:56:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-20 05:56:55,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 179. [2021-11-20 05:56:55,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 153 states have (on average 1.2026143790849673) internal successors, (184), 157 states have internal predecessors, (184), 19 states have call successors, (19), 5 states have call predecessors, (19), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-20 05:56:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 220 transitions. [2021-11-20 05:56:55,991 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 220 transitions. Word has length 66 [2021-11-20 05:56:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:55,991 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 220 transitions. [2021-11-20 05:56:55,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:56:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 220 transitions. [2021-11-20 05:56:55,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-20 05:56:55,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:55,993 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:56,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:56,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:56,204 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:56,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1041931164, now seen corresponding path program 1 times [2021-11-20 05:56:56,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:56,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505689321] [2021-11-20 05:56:56,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:56,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:56,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:56,206 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:56,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-20 05:56:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:56,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-20 05:56:56,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:56,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:56:56,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:56:57,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:57,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505689321] [2021-11-20 05:56:57,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505689321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:56:57,753 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:56:57,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-11-20 05:56:57,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749334048] [2021-11-20 05:56:57,753 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:56:57,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-20 05:56:57,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:57,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-20 05:56:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2021-11-20 05:56:57,754 INFO L87 Difference]: Start difference. First operand 179 states and 220 transitions. Second operand has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 20 states have internal predecessors, (70), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:56:58,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:58,250 INFO L93 Difference]: Finished difference Result 208 states and 247 transitions. [2021-11-20 05:56:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:56:58,250 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 20 states have internal predecessors, (70), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 67 [2021-11-20 05:56:58,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:58,251 INFO L225 Difference]: With dead ends: 208 [2021-11-20 05:56:58,251 INFO L226 Difference]: Without dead ends: 155 [2021-11-20 05:56:58,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2021-11-20 05:56:58,252 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 44 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 92 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:58,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1307 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 92 Unchecked, 0.3s Time] [2021-11-20 05:56:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-20 05:56:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-11-20 05:56:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 131 states have (on average 1.1984732824427482) internal successors, (157), 135 states have internal predecessors, (157), 17 states have call successors, (17), 5 states have call predecessors, (17), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-20 05:56:58,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 189 transitions. [2021-11-20 05:56:58,271 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 189 transitions. Word has length 67 [2021-11-20 05:56:58,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:58,271 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 189 transitions. [2021-11-20 05:56:58,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1818181818181817) internal successors, (70), 20 states have internal predecessors, (70), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:56:58,272 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 189 transitions. [2021-11-20 05:56:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-20 05:56:58,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:58,273 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:58,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:58,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:58,484 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:58,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1151744600, now seen corresponding path program 1 times [2021-11-20 05:56:58,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:58,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309189777] [2021-11-20 05:56:58,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:58,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:58,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:58,487 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:58,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-20 05:56:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:58,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 05:56:58,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:58,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:58,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:58,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309189777] [2021-11-20 05:56:58,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309189777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:58,913 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:58,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-20 05:56:58,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872422307] [2021-11-20 05:56:58,913 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:58,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:56:58,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:58,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:56:58,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:56:58,915 INFO L87 Difference]: Start difference. First operand 155 states and 189 transitions. Second operand has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 05:56:59,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:59,111 INFO L93 Difference]: Finished difference Result 175 states and 208 transitions. [2021-11-20 05:56:59,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:56:59,112 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 68 [2021-11-20 05:56:59,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:59,113 INFO L225 Difference]: With dead ends: 175 [2021-11-20 05:56:59,113 INFO L226 Difference]: Without dead ends: 149 [2021-11-20 05:56:59,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:56:59,114 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 29 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:59,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 575 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:59,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2021-11-20 05:56:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 132. [2021-11-20 05:56:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.1727272727272726) internal successors, (129), 114 states have internal predecessors, (129), 14 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-20 05:56:59,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 155 transitions. [2021-11-20 05:56:59,134 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 155 transitions. Word has length 68 [2021-11-20 05:56:59,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:59,134 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 155 transitions. [2021-11-20 05:56:59,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-20 05:56:59,135 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 155 transitions. [2021-11-20 05:56:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 05:56:59,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:59,136 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:59,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-20 05:56:59,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:56:59,347 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:56:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:56:59,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1565040980, now seen corresponding path program 1 times [2021-11-20 05:56:59,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:56:59,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720533044] [2021-11-20 05:56:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:56:59,348 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:56:59,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:56:59,349 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:56:59,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-20 05:56:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:56:59,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 05:56:59,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:56:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:59,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:56:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:56:59,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:56:59,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720533044] [2021-11-20 05:56:59,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720533044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:56:59,739 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:56:59,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 05:56:59,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313948499] [2021-11-20 05:56:59,740 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:56:59,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 05:56:59,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:56:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 05:56:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:56:59,741 INFO L87 Difference]: Start difference. First operand 132 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 05:56:59,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:56:59,822 INFO L93 Difference]: Finished difference Result 158 states and 182 transitions. [2021-11-20 05:56:59,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:56:59,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2021-11-20 05:56:59,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:56:59,823 INFO L225 Difference]: With dead ends: 158 [2021-11-20 05:56:59,823 INFO L226 Difference]: Without dead ends: 111 [2021-11-20 05:56:59,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 05:56:59,824 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 55 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:56:59,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 304 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:56:59,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-20 05:56:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2021-11-20 05:56:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.1538461538461537) internal successors, (105), 93 states have internal predecessors, (105), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:56:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2021-11-20 05:56:59,835 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 70 [2021-11-20 05:56:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:56:59,835 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2021-11-20 05:56:59,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-20 05:56:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2021-11-20 05:56:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 05:56:59,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:56:59,837 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:56:59,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:00,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:00,049 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:00,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:00,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1885920814, now seen corresponding path program 1 times [2021-11-20 05:57:00,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:00,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737308361] [2021-11-20 05:57:00,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:00,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:00,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:00,051 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:00,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-20 05:57:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:00,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 05:57:00,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:00,396 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-20 05:57:00,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-20 05:57:02,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:02,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737308361] [2021-11-20 05:57:02,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737308361] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:02,188 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:57:02,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13] total 19 [2021-11-20 05:57:02,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139614831] [2021-11-20 05:57:02,188 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:02,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 05:57:02,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:02,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 05:57:02,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-11-20 05:57:02,189 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 17 states have internal predecessors, (69), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-20 05:57:02,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:02,882 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2021-11-20 05:57:02,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:57:02,883 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 17 states have internal predecessors, (69), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 70 [2021-11-20 05:57:02,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:02,884 INFO L225 Difference]: With dead ends: 159 [2021-11-20 05:57:02,884 INFO L226 Difference]: Without dead ends: 111 [2021-11-20 05:57:02,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:57:02,885 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 41 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:02,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1006 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 75 Unchecked, 0.4s Time] [2021-11-20 05:57:02,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-20 05:57:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2021-11-20 05:57:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 91 states have (on average 1.1428571428571428) internal successors, (104), 93 states have internal predecessors, (104), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:57:02,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2021-11-20 05:57:02,897 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 70 [2021-11-20 05:57:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:02,897 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2021-11-20 05:57:02,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 17 states have internal predecessors, (69), 5 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2021-11-20 05:57:02,898 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2021-11-20 05:57:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-20 05:57:02,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:02,899 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:57:02,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:03,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:03,111 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:03,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:03,111 INFO L85 PathProgramCache]: Analyzing trace with hash -2134286868, now seen corresponding path program 1 times [2021-11-20 05:57:03,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:03,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671083840] [2021-11-20 05:57:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:03,112 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:03,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:03,112 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:03,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-20 05:57:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:03,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-20 05:57:03,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:04,083 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:57:04,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 05:57:05,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:05,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671083840] [2021-11-20 05:57:05,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671083840] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:05,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:05,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-20 05:57:05,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454606453] [2021-11-20 05:57:05,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:05,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:57:05,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:05,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:57:05,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:57:05,105 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:57:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:07,864 INFO L93 Difference]: Finished difference Result 158 states and 181 transitions. [2021-11-20 05:57:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 05:57:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 70 [2021-11-20 05:57:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:07,866 INFO L225 Difference]: With dead ends: 158 [2021-11-20 05:57:07,866 INFO L226 Difference]: Without dead ends: 148 [2021-11-20 05:57:07,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:57:07,867 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 61 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 149 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:07,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 653 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 149 Unchecked, 0.3s Time] [2021-11-20 05:57:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-20 05:57:07,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2021-11-20 05:57:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 101 states have internal predecessors, (112), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-20 05:57:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2021-11-20 05:57:07,892 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 70 [2021-11-20 05:57:07,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:07,892 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2021-11-20 05:57:07,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 18 states have internal predecessors, (61), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-20 05:57:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2021-11-20 05:57:07,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-20 05:57:07,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:07,894 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-11-20 05:57:07,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-20 05:57:08,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:08,105 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:08,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2093027486, now seen corresponding path program 1 times [2021-11-20 05:57:08,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:08,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946740241] [2021-11-20 05:57:08,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:08,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:08,107 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:08,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-20 05:57:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:08,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:57:08,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:57:08,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 05:57:09,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:09,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946740241] [2021-11-20 05:57:09,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946740241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 05:57:09,418 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 05:57:09,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-11-20 05:57:09,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59281587] [2021-11-20 05:57:09,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 05:57:09,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:57:09,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:09,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:57:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:57:09,420 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:57:09,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:09,720 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2021-11-20 05:57:09,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:57:09,721 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 69 [2021-11-20 05:57:09,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:09,722 INFO L225 Difference]: With dead ends: 128 [2021-11-20 05:57:09,722 INFO L226 Difference]: Without dead ends: 68 [2021-11-20 05:57:09,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:57:09,722 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 18 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:09,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 806 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 64 Unchecked, 0.2s Time] [2021-11-20 05:57:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-20 05:57:09,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-20 05:57:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 56 states have internal predecessors, (63), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:57:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2021-11-20 05:57:09,729 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 69 [2021-11-20 05:57:09,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:09,730 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2021-11-20 05:57:09,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 18 states have internal predecessors, (72), 6 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-20 05:57:09,730 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2021-11-20 05:57:09,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 05:57:09,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:09,731 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:09,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:09,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:09,933 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash 438339121, now seen corresponding path program 1 times [2021-11-20 05:57:09,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:09,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573329611] [2021-11-20 05:57:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:09,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:09,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:09,935 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:09,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-20 05:57:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:10,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:57:10,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:12,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:13,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:13,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573329611] [2021-11-20 05:57:13,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573329611] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:13,129 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:13,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-20 05:57:13,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57473538] [2021-11-20 05:57:13,129 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:13,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:57:13,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:13,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:57:13,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-11-20 05:57:13,130 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-20 05:57:13,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:13,656 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2021-11-20 05:57:13,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:57:13,657 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 73 [2021-11-20 05:57:13,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:13,658 INFO L225 Difference]: With dead ends: 104 [2021-11-20 05:57:13,658 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 05:57:13,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:57:13,659 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 23 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:13,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 715 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 127 Invalid, 0 Unknown, 109 Unchecked, 0.3s Time] [2021-11-20 05:57:13,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 05:57:13,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 83. [2021-11-20 05:57:13,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 69 states have internal predecessors, (77), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 05:57:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2021-11-20 05:57:13,678 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 73 [2021-11-20 05:57:13,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:13,678 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2021-11-20 05:57:13,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-20 05:57:13,679 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2021-11-20 05:57:13,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 05:57:13,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:13,680 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:13,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:13,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:13,891 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:13,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:13,891 INFO L85 PathProgramCache]: Analyzing trace with hash 696504559, now seen corresponding path program 1 times [2021-11-20 05:57:13,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:13,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571652203] [2021-11-20 05:57:13,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:13,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:13,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:13,892 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:13,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-20 05:57:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:13,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-20 05:57:13,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 05:57:15,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:19,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:19,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571652203] [2021-11-20 05:57:19,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571652203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:19,124 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:19,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-11-20 05:57:19,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875010906] [2021-11-20 05:57:19,124 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:19,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-20 05:57:19,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-20 05:57:19,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2021-11-20 05:57:19,126 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-20 05:57:20,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:20,744 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2021-11-20 05:57:20,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 05:57:20,745 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 73 [2021-11-20 05:57:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:20,746 INFO L225 Difference]: With dead ends: 116 [2021-11-20 05:57:20,746 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 05:57:20,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=99, Invalid=771, Unknown=0, NotChecked=0, Total=870 [2021-11-20 05:57:20,748 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 25 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 302 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:20,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 1197 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 201 Invalid, 0 Unknown, 302 Unchecked, 0.9s Time] [2021-11-20 05:57:20,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 05:57:20,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2021-11-20 05:57:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 62 states have internal predecessors, (69), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-20 05:57:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2021-11-20 05:57:20,756 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 73 [2021-11-20 05:57:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:20,757 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2021-11-20 05:57:20,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-20 05:57:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2021-11-20 05:57:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 05:57:20,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:20,758 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:20,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:20,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:20,959 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:20,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash -405666381, now seen corresponding path program 1 times [2021-11-20 05:57:20,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609712982] [2021-11-20 05:57:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:20,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:20,961 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:20,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-20 05:57:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:21,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-20 05:57:21,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:22,891 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:22,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:26,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609712982] [2021-11-20 05:57:26,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609712982] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:26,230 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:26,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 25 [2021-11-20 05:57:26,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088408376] [2021-11-20 05:57:26,230 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:26,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-20 05:57:26,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-20 05:57:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:57:26,231 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-20 05:57:39,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:39,735 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2021-11-20 05:57:39,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 05:57:39,736 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 73 [2021-11-20 05:57:39,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:39,737 INFO L225 Difference]: With dead ends: 110 [2021-11-20 05:57:39,737 INFO L226 Difference]: Without dead ends: 72 [2021-11-20 05:57:39,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=508, Invalid=1214, Unknown=0, NotChecked=0, Total=1722 [2021-11-20 05:57:39,739 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 158 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:39,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 552 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 406 Invalid, 0 Unknown, 28 Unchecked, 2.1s Time] [2021-11-20 05:57:39,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-20 05:57:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-11-20 05:57:39,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 56 states have internal predecessors, (61), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:57:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-11-20 05:57:39,747 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 73 [2021-11-20 05:57:39,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:39,747 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-11-20 05:57:39,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-20 05:57:39,748 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-11-20 05:57:39,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 05:57:39,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:39,749 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:39,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-11-20 05:57:39,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:39,957 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1028998347, now seen corresponding path program 1 times [2021-11-20 05:57:39,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:39,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083273153] [2021-11-20 05:57:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:39,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:39,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:39,958 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:39,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-20 05:57:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:40,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 05:57:40,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:40,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:41,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:41,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083273153] [2021-11-20 05:57:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083273153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:41,245 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:41,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-20 05:57:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092967291] [2021-11-20 05:57:41,245 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:41,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 05:57:41,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:41,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 05:57:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-20 05:57:41,246 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-20 05:57:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:41,645 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2021-11-20 05:57:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:57:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 74 [2021-11-20 05:57:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:41,646 INFO L225 Difference]: With dead ends: 76 [2021-11-20 05:57:41,646 INFO L226 Difference]: Without dead ends: 68 [2021-11-20 05:57:41,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-11-20 05:57:41,647 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 9 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:41,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 508 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 63 Unchecked, 0.1s Time] [2021-11-20 05:57:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-20 05:57:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-11-20 05:57:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 56 states have internal predecessors, (60), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-20 05:57:41,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2021-11-20 05:57:41,667 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 74 [2021-11-20 05:57:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:41,668 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2021-11-20 05:57:41,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.875) internal successors, (62), 16 states have internal predecessors, (62), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-20 05:57:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2021-11-20 05:57:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-20 05:57:41,669 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:57:41,669 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 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] [2021-11-20 05:57:41,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:41,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:41,875 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 05:57:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:57:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash -770832909, now seen corresponding path program 1 times [2021-11-20 05:57:41,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:57:41,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773590191] [2021-11-20 05:57:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:57:41,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:57:41,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:57:41,877 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:57:41,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-20 05:57:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:57:41,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 05:57:41,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:57:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-20 05:57:43,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:57:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-20 05:57:45,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:57:45,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773590191] [2021-11-20 05:57:45,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773590191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:57:45,985 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:57:45,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 13] imperfect sequences [] total 24 [2021-11-20 05:57:45,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809503075] [2021-11-20 05:57:45,986 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:57:45,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-20 05:57:45,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:57:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-20 05:57:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-20 05:57:45,987 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-20 05:57:46,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:57:46,188 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2021-11-20 05:57:46,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:57:46,188 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 74 [2021-11-20 05:57:46,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:57:46,189 INFO L225 Difference]: With dead ends: 68 [2021-11-20 05:57:46,189 INFO L226 Difference]: Without dead ends: 0 [2021-11-20 05:57:46,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2021-11-20 05:57:46,190 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 5 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:57:46,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 465 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2021-11-20 05:57:46,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-20 05:57:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-20 05:57:46,191 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 05:57:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 05:57:46,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 74 [2021-11-20 05:57:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:57:46,191 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 05:57:46,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 24 states have internal predecessors, (62), 6 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-20 05:57:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-20 05:57:46,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-20 05:57:46,194 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 05:57:46,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-20 05:57:46,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:57:46,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-20 06:04:24,520 WARN L227 SmtUtils]: Spent 6.64m on a formula simplification. DAG size of input: 210 DAG size of output: 188 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-20 06:04:48,720 WARN L227 SmtUtils]: Spent 19.86s on a formula simplification. DAG size of input: 279 DAG size of output: 261 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-11-20 06:05:05,481 WARN L227 SmtUtils]: Spent 16.32s on a formula simplification. DAG size of input: 188 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:05:15,436 WARN L227 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 349 DAG size of output: 166 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:05:36,671 WARN L227 SmtUtils]: Spent 16.23s on a formula simplification. DAG size of input: 342 DAG size of output: 160 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:05:55,545 WARN L227 SmtUtils]: Spent 18.87s on a formula simplification. DAG size of input: 261 DAG size of output: 136 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:07:49,616 WARN L227 SmtUtils]: Spent 1.90m on a formula simplification. DAG size of input: 178 DAG size of output: 100 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-20 06:07:49,626 INFO L858 garLoopResultBuilder]: For program point L60(lines 58 73) no Hoare annotation was computed. [2021-11-20 06:07:49,626 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 52) no Hoare annotation was computed. [2021-11-20 06:07:49,626 INFO L854 garLoopResultBuilder]: At program point L48-1(lines 38 53) the Hoare annotation is: (not (= |base2flt_#in~m| (_ bv0 32))) [2021-11-20 06:07:49,627 INFO L858 garLoopResultBuilder]: For program point L36(lines 36 76) no Hoare annotation was computed. [2021-11-20 06:07:49,627 INFO L854 garLoopResultBuilder]: At program point L74(lines 36 76) the Hoare annotation is: (not (= |base2flt_#in~m| (_ bv0 32))) [2021-11-20 06:07:49,627 INFO L854 garLoopResultBuilder]: At program point L58-2(lines 58 73) the Hoare annotation is: (not (= |base2flt_#in~m| (_ bv0 32))) [2021-11-20 06:07:49,627 INFO L861 garLoopResultBuilder]: At program point base2fltENTRY(lines 25 83) the Hoare annotation is: true [2021-11-20 06:07:49,627 INFO L858 garLoopResultBuilder]: For program point base2fltFINAL(lines 25 83) no Hoare annotation was computed. [2021-11-20 06:07:49,627 INFO L858 garLoopResultBuilder]: For program point L30(lines 30 35) no Hoare annotation was computed. [2021-11-20 06:07:49,628 INFO L858 garLoopResultBuilder]: For program point L59(lines 58 73) no Hoare annotation was computed. [2021-11-20 06:07:49,628 INFO L858 garLoopResultBuilder]: For program point base2fltEXIT(lines 25 83) no Hoare annotation was computed. [2021-11-20 06:07:49,628 INFO L854 garLoopResultBuilder]: At program point L80(lines 29 82) the Hoare annotation is: (let ((.cse0 (not (= |base2flt_#in~m| (_ bv0 32))))) (and (or (= base2flt_~m |base2flt_#in~m|) .cse0) (or .cse0 (= base2flt_~__retres4~0 (_ bv0 32))))) [2021-11-20 06:07:49,628 INFO L858 garLoopResultBuilder]: For program point L39(lines 38 53) no Hoare annotation was computed. [2021-11-20 06:07:49,628 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 352) no Hoare annotation was computed. [2021-11-20 06:07:49,628 INFO L858 garLoopResultBuilder]: For program point L316-1(lines 316 352) no Hoare annotation was computed. [2021-11-20 06:07:49,629 INFO L854 garLoopResultBuilder]: At program point L341-1(lines 328 346) the Hoare annotation is: (= |ULTIMATE.start_main_~tmp___9~0#1| (_ bv1 32)) [2021-11-20 06:07:49,629 INFO L858 garLoopResultBuilder]: For program point L292(lines 280 307) no Hoare annotation was computed. [2021-11-20 06:07:49,629 INFO L858 garLoopResultBuilder]: For program point L259(lines 259 263) no Hoare annotation was computed. [2021-11-20 06:07:49,629 INFO L858 garLoopResultBuilder]: For program point L259-2(lines 259 263) no Hoare annotation was computed. [2021-11-20 06:07:49,629 INFO L858 garLoopResultBuilder]: For program point L127(lines 127 138) no Hoare annotation was computed. [2021-11-20 06:07:49,629 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-20 06:07:49,631 INFO L854 garLoopResultBuilder]: At program point L127-2(lines 127 138) the Hoare annotation is: (let ((.cse8 (bvlshr |ULTIMATE.start_main_~a~0#1| (_ bv24 32))) (.cse7 (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|)) (.cse6 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~b#1|)) (.cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~a#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~tmp___0~0#1| (_ bv1 32))) (.cse1 (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32))) (.cse2 (let ((.cse9 (let ((.cse10 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32))) (.cse11 (= |ULTIMATE.start_main_~sa~0#1| (_ bv1 32))) (.cse12 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|))) (.cse13 (let ((.cse14 (not (= |ULTIMATE.start_addflt_~b#1| (_ bv0 32)))) (.cse15 (not (= |ULTIMATE.start_main_~a~0#1| (_ bv0 32))))) (or (and .cse6 .cse14 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~b~0#1|)) .cse15) (and .cse14 .cse4 .cse15))))) (or (and .cse10 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvlshr (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))) (_ bv1 32)))) .cse11 .cse12 .cse13) (and .cse10 .cse11 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) .cse12 (= (bvand (_ bv33554432 32) |ULTIMATE.start_addflt_~ma~0#1|) (_ bv0 32)) .cse13))))) (or (and (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|))))) .cse9 (= .cse8 .cse7)) (and .cse9 (forall ((|ULTIMATE.start_addflt_~ma~0#1| (_ BitVec 32))) (not (bvult (bvor (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~ma~0#1|) (bvshl (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|) (_ bv24 32))) |ULTIMATE.start_main_~a~0#1|))))))) (.cse3 (bvneg (bvadd .cse8 (_ bv4294967168 32)))) (.cse5 (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)))) (or (and .cse0 .cse1 .cse2 (not (= (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|)) (bvadd (_ bv4294967295 32) .cse3 |ULTIMATE.start_addflt_~ea~0#1|)) (_ bv0 32))) .cse4 (= (bvadd (_ bv127 32) |ULTIMATE.start_addflt_~ea~0#1|) .cse5)) (and .cse6 .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~a#1|)) (and .cse0 .cse1 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~b~0#1|))))) .cse2 (exists ((|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|)) (bvadd (bvneg (bvadd (bvlshr |ULTIMATE.start_main_~a~0#1| (_ bv24 32)) (_ bv4294967168 32))) |ULTIMATE.start_addflt_~ea~0#1|)) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) (bvult (bvadd .cse3 |ULTIMATE.start_addflt_~ea~0#1|) (_ bv32 32)) (= .cse5 .cse7))))) [2021-11-20 06:07:49,631 INFO L854 garLoopResultBuilder]: At program point L317(lines 313 353) the Hoare annotation is: (let ((.cse9 (= |ULTIMATE.start_addflt_~b#1| (_ bv0 32)))) (let ((.cse5 (or (not .cse9) (not (= |ULTIMATE.start_addflt_~a#1| (_ bv0 32))))) (.cse3 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r_add~0#1|)) (.cse0 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32))) (.cse1 (= |ULTIMATE.start_main_~sa~0#1| (_ bv1 32))) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~a#1|)) (.cse6 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~b~0#1|))) (.cse4 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~b#1|)) (.cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~r_add~0#1|)) (.cse8 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse6 .cse3) (and .cse5 .cse2 .cse3) (and .cse0 .cse7 .cse1 .cse8 (or .cse2 (and .cse4 .cse6))) (and (not (bvugt |ULTIMATE.start_addflt_#res#1| |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~a~0#1| (_ bv0 32)) (not (bvugt |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|)) (not (bvugt |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~a~0#1|)) (not (bvugt |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~a~0#1|)) (not (bvsgt |ULTIMATE.start_main_~sa~0#1| (_ bv0 32))) .cse9) (and .cse4 .cse7 .cse8 (not (bvult |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~b~0#1|)))))) [2021-11-20 06:07:49,631 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-20 06:07:49,632 INFO L858 garLoopResultBuilder]: For program point L284(lines 284 288) no Hoare annotation was computed. [2021-11-20 06:07:49,632 INFO L858 garLoopResultBuilder]: For program point L284-2(lines 284 288) no Hoare annotation was computed. [2021-11-20 06:07:49,632 INFO L858 garLoopResultBuilder]: For program point L334(lines 334 338) no Hoare annotation was computed. [2021-11-20 06:07:49,632 INFO L858 garLoopResultBuilder]: For program point L334-2(lines 334 338) no Hoare annotation was computed. [2021-11-20 06:07:49,632 INFO L858 garLoopResultBuilder]: For program point L128(lines 128 133) no Hoare annotation was computed. [2021-11-20 06:07:49,632 INFO L858 garLoopResultBuilder]: For program point L95(lines 95 101) no Hoare annotation was computed. [2021-11-20 06:07:49,633 INFO L858 garLoopResultBuilder]: For program point L95-2(lines 94 147) no Hoare annotation was computed. [2021-11-20 06:07:49,633 INFO L858 garLoopResultBuilder]: For program point L318-1(lines 316 350) no Hoare annotation was computed. [2021-11-20 06:07:49,633 INFO L861 garLoopResultBuilder]: At program point L252(line 252) the Hoare annotation is: true [2021-11-20 06:07:49,633 INFO L858 garLoopResultBuilder]: For program point L252-1(line 252) no Hoare annotation was computed. [2021-11-20 06:07:49,633 INFO L858 garLoopResultBuilder]: For program point L120(lines 120 125) no Hoare annotation was computed. [2021-11-20 06:07:49,634 INFO L854 garLoopResultBuilder]: At program point L145(lines 94 147) the Hoare annotation is: (let ((.cse13 (= |ULTIMATE.start_main_~a~0#1| (_ bv0 32))) (.cse16 (= |ULTIMATE.start_addflt_~b#1| (_ bv0 32)))) (let ((.cse6 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~b#1|)) (.cse8 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~b~0#1|))) (.cse7 (not .cse16)) (.cse11 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~a#1|)) (.cse9 (not .cse13))) (let ((.cse12 (= |ULTIMATE.start_main_~sa~0#1| (_ bv0 32))) (.cse15 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv0 32))) (.cse20 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~__retres10~0#1|)) (.cse10 (not (bvult |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~b~0#1|))) (.cse21 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~a#1|)) (.cse0 (not (bvult |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse2 (= |ULTIMATE.start_main_~tmp___0~0#1| (_ bv1 32))) (.cse3 (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32))) (.cse18 (bvult |ULTIMATE.start_addflt_~ma~0#1| (_ bv33554432 32))) (.cse5 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|))) (.cse19 (or (and .cse6 .cse7 .cse8 .cse9) (and .cse7 .cse11 .cse9))) (.cse1 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32))) (.cse22 (not (bvsgt |ULTIMATE.start_main_~sb~0#1| (_ bv0 32)))) (.cse4 (= |ULTIMATE.start_main_~sa~0#1| (_ bv1 32))) (.cse14 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~__retres10~0#1|))) (or (and .cse0 .cse1 .cse2 .cse3 (or (not (bvult (bvor (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~ma~0#1|) (bvshl (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|) (_ bv24 32))) |ULTIMATE.start_main_~a~0#1|)) (not (= (bvand (_ bv33554432 32) |ULTIMATE.start_addflt_~ma~0#1|) (_ bv0 32)))) .cse4 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) .cse5 (or (and .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse7 .cse11 .cse9 .cse10))) (and .cse12 .cse13 .cse11 .cse14 .cse15 .cse16) (and .cse0 (exists ((|v_ULTIMATE.start_addflt_~ma~0#1_103| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (let ((.cse17 (bvlshr |ULTIMATE.start_addflt_~a#1| (_ bv24 32)))) (and (= (bvor (bvand (_ bv16777215 32) |v_ULTIMATE.start_addflt_~ma~0#1_103|) (bvshl (bvadd .cse17 (_ bv1 32)) (_ bv24 32))) |ULTIMATE.start_addflt_~__retres10~0#1|) (not (= (_ bv0 32) (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|)) (bvadd .cse17 (bvneg (bvadd (bvlshr |ULTIMATE.start_main_~a~0#1| (_ bv24 32)) (_ bv4294967168 32))) (_ bv4294967168 32)))))))) .cse1 .cse2 .cse3 .cse18 .cse4 .cse5 .cse11 (exists ((|v_ULTIMATE.start_addflt_~ma~0#1_97| (_ BitVec 32))) (= (bvor (bvand (_ bv16777215 32) |v_ULTIMATE.start_addflt_~ma~0#1_97|) (bvshl (bvadd (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)) (_ bv1 32)) (_ bv24 32))) |ULTIMATE.start_addflt_~__retres10~0#1|)) (= (bvadd (_ bv127 32) |ULTIMATE.start_addflt_~ea~0#1|) (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32))) .cse19) (and .cse13 (not (bvugt |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|)) (not (bvugt |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~a~0#1|)) (not (bvsgt |ULTIMATE.start_main_~sa~0#1| (_ bv0 32))) .cse16) (and .cse1 .cse20 .cse6 .cse4 .cse7 .cse10 .cse21) (and .cse1 .cse4 .cse5 .cse7 .cse11 .cse14 .cse9) (and .cse12 (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv0 32))) .cse11 .cse14 .cse15 (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|)) (and .cse0 .cse1 .cse6 .cse2 .cse3 .cse18 .cse4 .cse5 .cse19 .cse21) (and .cse1 .cse20 .cse6 .cse22 .cse4 .cse9 .cse10 .cse21) (and .cse0 .cse1 .cse2 .cse3 .cse18 .cse4 .cse5 .cse19 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32))) (let ((.cse23 (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~b~0#1|))))) (and (= (bvor (bvand (_ bv16777215 32) .cse23) (bvshl (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)) (_ bv24 32))) |ULTIMATE.start_addflt_~__retres10~0#1|) (= (bvand (_ bv33554432 32) .cse23) (_ bv0 32))))) (exists ((|ULTIMATE.start_addflt_~ea~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (let ((.cse25 (bvadd (bvneg (bvadd (bvlshr |ULTIMATE.start_main_~a~0#1| (_ bv24 32)) (_ bv4294967168 32))) |ULTIMATE.start_addflt_~ea~0#1|))) (let ((.cse24 (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|)) .cse25) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) (and (= |ULTIMATE.start_addflt_~__retres10~0#1| (bvor (bvand (_ bv16777215 32) .cse24) (bvshl (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|) (_ bv24 32)))) (= (bvand (_ bv33554432 32) .cse24) (_ bv0 32)) (bvult .cse25 (_ bv32 32))))))) (and .cse1 .cse22 .cse4 .cse7 .cse11 (not (= |ULTIMATE.start_addflt_~a#1| (_ bv0 32))) .cse14 .cse9))))) [2021-11-20 06:07:49,634 INFO L858 garLoopResultBuilder]: For program point L269(lines 269 273) no Hoare annotation was computed. [2021-11-20 06:07:49,634 INFO L858 garLoopResultBuilder]: For program point L269-2(lines 269 273) no Hoare annotation was computed. [2021-11-20 06:07:49,634 INFO L854 garLoopResultBuilder]: At program point L294-1(lines 294 303) the Hoare annotation is: (let ((.cse0 (bvsge |ULTIMATE.start_main_~tmp___3~0#1| (_ bv0 32))) (.cse1 (bvsge |ULTIMATE.start_main_~tmp___4~0#1| (_ bv0 32))) (.cse2 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32))) (.cse4 (= |ULTIMATE.start_main_~sa~0#1| (_ bv1 32))) (.cse5 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|))) (.cse6 (not (bvult |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse7 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~b#1|)) (.cse9 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~b~0#1|))) (.cse8 (not (= |ULTIMATE.start_addflt_~b#1| (_ bv0 32)))) (.cse12 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~a#1|)) (.cse11 (not (= |ULTIMATE.start_main_~a~0#1| (_ bv0 32))))) (or (and (= |ULTIMATE.start_main_~tmp___0~0#1| (_ bv1 32)) .cse0 (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32)) (= |ULTIMATE.start_main_~tmp___2~0#1| (_ bv1 32)) .cse1 (let ((.cse3 (let ((.cse10 (not (bvult |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and .cse7 .cse8 .cse9 .cse10 .cse11) (and .cse8 .cse12 .cse10 .cse11))))) (or (and .cse2 .cse3 (bvult |ULTIMATE.start_addflt_~ma~0#1| (_ bv33554432 32)) .cse4 .cse5 .cse6) (and .cse2 .cse3 .cse4 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) .cse5 .cse6))) (= |ULTIMATE.start_main_~tmp___1~0#1| (_ bv1 32))) (and .cse0 .cse1 (or (and (let ((.cse13 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r_add~0#1|))) (or (and .cse7 .cse8 .cse9 .cse13 .cse11) (and .cse8 .cse12 .cse13 .cse11))) .cse2 .cse4 .cse5) (and .cse2 .cse4 .cse5 .cse6 (let ((.cse14 (not (bvugt |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~a~0#1|)))) (or (and .cse7 .cse14 .cse8 .cse9 .cse11) (and .cse14 .cse8 .cse12 .cse11)))))))) [2021-11-20 06:07:49,635 INFO L854 garLoopResultBuilder]: At program point L253(line 253) the Hoare annotation is: (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|) [2021-11-20 06:07:49,635 INFO L858 garLoopResultBuilder]: For program point L253-1(line 253) no Hoare annotation was computed. [2021-11-20 06:07:49,635 INFO L854 garLoopResultBuilder]: At program point L146(lines 84 148) the Hoare annotation is: (let ((.cse25 (= |ULTIMATE.start_main_~a~0#1| (_ bv0 32))) (.cse26 (= |ULTIMATE.start_addflt_~b#1| (_ bv0 32)))) (let ((.cse20 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~b#1|)) (.cse21 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~b~0#1|))) (.cse4 (not .cse26)) (.cse5 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~a#1|)) (.cse7 (not .cse25))) (let ((.cse16 (= |ULTIMATE.start_main_~sa~0#1| (_ bv0 32))) (.cse17 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv0 32))) (.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_#res#1|)) (.cse6 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~__retres10~0#1|)) (.cse8 (not (bvult |ULTIMATE.start_addflt_#res#1| |ULTIMATE.start_main_~a~0#1|))) (.cse9 (= |ULTIMATE.start_main_~tmp___0~0#1| (_ bv1 32))) (.cse11 (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32))) (.cse12 (bvult |ULTIMATE.start_addflt_~ma~0#1| (_ bv33554432 32))) (.cse3 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|))) (.cse15 (or (and .cse20 .cse4 .cse21 .cse7) (and .cse4 .cse5 .cse7))) (.cse0 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32))) (.cse22 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~__retres10~0#1|)) (.cse28 (not (bvsgt |ULTIMATE.start_main_~sb~0#1| (_ bv0 32)))) (.cse23 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_#res#1|)) (.cse2 (= |ULTIMATE.start_main_~sa~0#1| (_ bv1 32))) (.cse19 (not (bvult |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~b~0#1|))) (.cse24 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~a#1|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) (and .cse8 .cse0 .cse9 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32))) (let ((.cse10 (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~b~0#1|))))) (and (= |ULTIMATE.start_addflt_#res#1| (bvor (bvand (_ bv16777215 32) .cse10) (bvshl (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)) (_ bv24 32)))) (= (bvand (_ bv33554432 32) .cse10) (_ bv0 32))))) .cse11 .cse12 .cse2 .cse3 (exists ((|ULTIMATE.start_addflt_~ea~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (let ((.cse14 (bvadd (bvneg (bvadd (bvlshr |ULTIMATE.start_main_~a~0#1| (_ bv24 32)) (_ bv4294967168 32))) |ULTIMATE.start_addflt_~ea~0#1|))) (let ((.cse13 (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|)) .cse14) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) (and (= |ULTIMATE.start_addflt_#res#1| (bvor (bvand (_ bv16777215 32) .cse13) (bvshl (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|) (_ bv24 32)))) (= (bvand (_ bv33554432 32) .cse13) (_ bv0 32)) (bvult .cse14 (_ bv32 32)))))) .cse15) (and .cse16 (not (bvugt |ULTIMATE.start_main_~a~0#1| (_ bv0 32))) .cse1 .cse5 .cse6 .cse17 (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|)) (and .cse8 (not (bvult |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse0 (let ((.cse18 (not (bvult |ULTIMATE.start_addflt_#res#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and .cse4 .cse5 .cse18 .cse7 .cse19) (and .cse20 .cse4 .cse21 .cse18 .cse7 .cse19))) .cse9 .cse11 (or (not (bvult (bvor (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~ma~0#1|) (bvshl (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|) (_ bv24 32))) |ULTIMATE.start_main_~a~0#1|)) (not (= (bvand (_ bv33554432 32) |ULTIMATE.start_addflt_~ma~0#1|) (_ bv0 32)))) .cse2 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) .cse3) (and .cse0 .cse22 .cse20 .cse23 .cse2 .cse4 .cse19 .cse24) (and .cse16 .cse25 .cse1 .cse5 .cse6 .cse17 .cse26) (and .cse8 .cse0 .cse9 (exists ((|v_ULTIMATE.start_addflt_~ma~0#1_97| (_ BitVec 32))) (= (bvor (bvand (_ bv16777215 32) |v_ULTIMATE.start_addflt_~ma~0#1_97|) (bvshl (bvadd (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)) (_ bv1 32)) (_ bv24 32))) |ULTIMATE.start_addflt_#res#1|)) .cse11 .cse12 (exists ((|v_ULTIMATE.start_addflt_~ma~0#1_103| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (let ((.cse27 (bvlshr |ULTIMATE.start_addflt_~a#1| (_ bv24 32)))) (and (not (= (_ bv0 32) (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|)) (bvadd .cse27 (bvneg (bvadd (bvlshr |ULTIMATE.start_main_~a~0#1| (_ bv24 32)) (_ bv4294967168 32))) (_ bv4294967168 32))))) (= |ULTIMATE.start_addflt_#res#1| (bvor (bvand (_ bv16777215 32) |v_ULTIMATE.start_addflt_~ma~0#1_103|) (bvshl (bvadd .cse27 (_ bv1 32)) (_ bv24 32))))))) .cse2 .cse3 .cse15) (and .cse0 .cse28 .cse1 .cse2 .cse4 .cse5 (not (= |ULTIMATE.start_addflt_~a#1| (_ bv0 32))) .cse6 .cse7) (and .cse8 .cse0 .cse20 .cse9 .cse11 .cse12 .cse2 .cse3 .cse15 .cse24) (and .cse0 .cse22 .cse20 .cse28 .cse23 .cse2 .cse7 .cse19 .cse24) (and (not (bvugt |ULTIMATE.start_addflt_#res#1| |ULTIMATE.start_main_~a~0#1|)) .cse25 (not (bvugt |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|)) (not (bvugt |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~a~0#1|)) (not (bvsgt |ULTIMATE.start_main_~sa~0#1| (_ bv0 32))) .cse26))))) [2021-11-20 06:07:49,635 INFO L854 garLoopResultBuilder]: At program point L254(line 254) the Hoare annotation is: (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|) [2021-11-20 06:07:49,636 INFO L858 garLoopResultBuilder]: For program point L254-1(line 254) no Hoare annotation was computed. [2021-11-20 06:07:49,636 INFO L858 garLoopResultBuilder]: For program point L279(lines 279 312) no Hoare annotation was computed. [2021-11-20 06:07:49,636 INFO L858 garLoopResultBuilder]: For program point L279-1(lines 250 356) no Hoare annotation was computed. [2021-11-20 06:07:49,636 INFO L858 garLoopResultBuilder]: For program point L321(lines 321 325) no Hoare annotation was computed. [2021-11-20 06:07:49,637 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-20 06:07:49,637 INFO L858 garLoopResultBuilder]: For program point L321-2(lines 321 325) no Hoare annotation was computed. [2021-11-20 06:07:49,638 INFO L858 garLoopResultBuilder]: For program point L280(lines 280 309) no Hoare annotation was computed. [2021-11-20 06:07:49,638 INFO L854 garLoopResultBuilder]: At program point L115(line 115) the Hoare annotation is: (let ((.cse12 (bvlshr |ULTIMATE.start_main_~a~0#1| (_ bv24 32))) (.cse4 (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~eb~0#1|)) (.cse11 (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~a~0#1|)))) (let ((.cse9 (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|)) (.cse7 (= |ULTIMATE.start_addflt_~mb~0#1| .cse11)) (.cse8 (= .cse12 .cse4))) (let ((.cse0 (= |ULTIMATE.start_main_~tmp___0~0#1| (_ bv1 32))) (.cse1 (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32))) (.cse3 (let ((.cse10 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32))) (.cse13 (= |ULTIMATE.start_main_~sa~0#1| (_ bv1 32)))) (or (and .cse10 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~b#1|) (= |ULTIMATE.start_addflt_~ma~0#1| .cse11) (bvsge |ULTIMATE.start_addflt_~ea~0#1| |ULTIMATE.start_addflt_~eb~0#1|) (= .cse12 .cse9) (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~mb~0#1| (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)))) .cse13 (not (= |ULTIMATE.start_addflt_~b#1| (_ bv0 32))) (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~b~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~a#1|)) (and .cse10 (bvult |ULTIMATE.start_addflt_~b#1| |ULTIMATE.start_addflt_~a#1|) .cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~b#1|) (exists ((|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (and (= (bvlshr |ULTIMATE.start_addflt_~a#1| (_ bv24 32)) (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|)) (= |ULTIMATE.start_addflt_~ma~0#1| (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) .cse8 .cse13 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~a#1|) (exists ((|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (and (= (bvlshr |ULTIMATE.start_addflt_~a#1| (_ bv24 32)) (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|)) (bvult |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~a#1|))) (not (= |ULTIMATE.start_main_~a~0#1| (_ bv0 32))))))) (.cse2 (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~b~0#1|))) (.cse5 (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32))) (.cse6 (= (_ bv0 32) |ULTIMATE.start_main_~zero~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_addflt_~mb~0#1| .cse2) .cse3 (= .cse4 .cse5) .cse6) (and .cse0 .cse7 .cse1 .cse8 .cse3 (= |ULTIMATE.start_addflt_~ma~0#1| .cse2) (= .cse5 .cse9) .cse6))))) [2021-11-20 06:07:49,638 INFO L858 garLoopResultBuilder]: For program point L115-1(line 115) no Hoare annotation was computed. [2021-11-20 06:07:49,638 INFO L858 garLoopResultBuilder]: For program point L140(line 140) no Hoare annotation was computed. [2021-11-20 06:07:49,645 INFO L858 garLoopResultBuilder]: For program point L297(lines 297 301) no Hoare annotation was computed. [2021-11-20 06:07:49,645 INFO L858 garLoopResultBuilder]: For program point L297-2(lines 297 301) no Hoare annotation was computed. [2021-11-20 06:07:49,645 INFO L861 garLoopResultBuilder]: At program point L355(lines 226 357) the Hoare annotation is: true [2021-11-20 06:07:49,645 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-20 06:07:49,646 INFO L858 garLoopResultBuilder]: For program point L256(lines 256 265) no Hoare annotation was computed. [2021-11-20 06:07:49,646 INFO L858 garLoopResultBuilder]: For program point L256-2(lines 250 356) no Hoare annotation was computed. [2021-11-20 06:07:49,646 INFO L858 garLoopResultBuilder]: For program point L281(lines 281 290) no Hoare annotation was computed. [2021-11-20 06:07:49,646 INFO L854 garLoopResultBuilder]: At program point L281-2(lines 281 290) the Hoare annotation is: (let ((.cse14 (= |ULTIMATE.start_main_~tmp___2~0#1| (_ bv1 32))) (.cse18 (= |ULTIMATE.start_main_~tmp___1~0#1| (_ bv1 32))) (.cse4 (= |ULTIMATE.start_main_~tmp~2#1| (_ bv1 32))) (.cse5 (= |ULTIMATE.start_main_~tmp___0~0#1| (_ bv1 32))) (.cse6 (= |ULTIMATE.start_main_~sb~0#1| (_ bv1 32))) (.cse19 (bvsge |ULTIMATE.start_main_~tmp___1~0#1| (_ bv0 32))) (.cse15 (= |ULTIMATE.start_main_~sa~0#1| (_ bv1 32))) (.cse16 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~a~0#1|))) (.cse17 (not (bvult |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse20 (bvsge |ULTIMATE.start_main_~tmp___2~0#1| (_ bv0 32))) (.cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~b#1|)) (.cse13 (not (bvult |ULTIMATE.start_addflt_~a#1| |ULTIMATE.start_main_~b~0#1|))) (.cse21 (not (bvugt |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse7 (not (= |ULTIMATE.start_addflt_~b#1| (_ bv0 32)))) (.cse8 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~a#1|)) (.cse11 (not (= |ULTIMATE.start_main_~a~0#1| (_ bv0 32))))) (let ((.cse2 (not (bvult |ULTIMATE.start_addflt_#res#1| |ULTIMATE.start_main_~a~0#1|))) (.cse3 (not (bvult |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse10 (not (bvult |ULTIMATE.start_main_~r_add~0#1| |ULTIMATE.start_main_~b~0#1|))) (.cse0 (let ((.cse23 (bvult |ULTIMATE.start_addflt_~ma~0#1| (_ bv33554432 32)))) (or (and .cse4 .cse5 .cse6 .cse23 .cse14 .cse15 .cse16 .cse17 (or (and .cse1 .cse7 .cse13 .cse11) (and .cse7 .cse8 .cse11)) .cse18) (and .cse4 .cse5 .cse6 .cse19 .cse23 .cse15 .cse16 .cse17 .cse20 (or (and .cse1 .cse21 .cse7 .cse13 .cse11) (and .cse21 .cse7 .cse8 .cse11))))))) (or (and (not (= (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)) (_ bv255 32))) (exists ((|v_ULTIMATE.start_addflt_~ma~0#1_97| (_ BitVec 32))) (= (bvor (bvand (_ bv16777215 32) |v_ULTIMATE.start_addflt_~ma~0#1_97|) (bvshl (bvadd (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)) (_ bv1 32)) (_ bv24 32))) |ULTIMATE.start_main_~r_add~0#1|)) .cse0) (and .cse1 .cse0 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_addflt_~a#1|)) (and .cse2 .cse3 .cse4 .cse5 .cse6 (let ((.cse9 (not (bvult |ULTIMATE.start_addflt_#res#1| |ULTIMATE.start_main_~b~0#1|))) (.cse12 (not (bvult |ULTIMATE.start_addflt_~__retres10~0#1| |ULTIMATE.start_main_~b~0#1|)))) (or (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12) (and .cse1 .cse7 .cse13 .cse9 .cse10 .cse11 .cse12))) (or (not (bvult (bvor (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~ma~0#1|) (bvshl (bvadd (_ bv128 32) |ULTIMATE.start_addflt_~ea~0#1|) (_ bv24 32))) |ULTIMATE.start_main_~a~0#1|)) (not (= (bvand (_ bv33554432 32) |ULTIMATE.start_addflt_~ma~0#1|) (_ bv0 32)))) .cse14 .cse15 (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~a#1| (_ BitVec 32))) (= |ULTIMATE.start_addflt_~ma~0#1| (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~a#1|))))) .cse16 .cse17 .cse18) (and .cse2 .cse3 .cse4 .cse19 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~r_add~0#1|) .cse15 .cse16 .cse20 (or (and .cse1 .cse7 .cse10) (and .cse21 .cse7 .cse8 .cse10 .cse11))) (and (exists ((|ULTIMATE.start_addflt_~b#1| (_ BitVec 32)) (|ULTIMATE.start_addflt_~delta~0#1| (_ BitVec 32))) (let ((.cse22 (bvadd (bvlshr (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_addflt_~b#1|)) |ULTIMATE.start_addflt_~delta~0#1|) (bvor (_ bv16777216 32) (bvand (_ bv16777215 32) |ULTIMATE.start_main_~b~0#1|))))) (and (= (bvor (bvand (_ bv16777215 32) .cse22) (bvshl (bvlshr |ULTIMATE.start_main_~b~0#1| (_ bv24 32)) (_ bv24 32))) |ULTIMATE.start_main_~r_add~0#1|) (= (bvand (_ bv33554432 32) .cse22) (_ bv0 32))))) .cse0) (and .cse4 .cse19 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_#res#1|) .cse15 .cse17 .cse20 .cse7 .cse8 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_addflt_~__retres10~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r_add~0#1|) .cse11)))) [2021-11-20 06:07:49,646 INFO L858 garLoopResultBuilder]: For program point L331(lines 331 340) no Hoare annotation was computed. [2021-11-20 06:07:49,646 INFO L858 garLoopResultBuilder]: For program point L331-2(lines 330 346) no Hoare annotation was computed. [2021-11-20 06:07:49,646 INFO L858 garLoopResultBuilder]: For program point L117(line 117) no Hoare annotation was computed. [2021-11-20 06:07:49,647 INFO L858 garLoopResultBuilder]: For program point L117-2(line 117) no Hoare annotation was computed. [2021-11-20 06:07:49,647 INFO L858 garLoopResultBuilder]: For program point L266-1(lines 266 275) no Hoare annotation was computed. [2021-11-20 06:07:49,647 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 19) no Hoare annotation was computed. [2021-11-20 06:07:49,647 INFO L858 garLoopResultBuilder]: For program point L17-2(lines 16 21) no Hoare annotation was computed. [2021-11-20 06:07:49,647 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 16 21) the Hoare annotation is: true [2021-11-20 06:07:49,647 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 16 21) no Hoare annotation was computed. [2021-11-20 06:07:49,647 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-11-20 06:07:49,647 INFO L858 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-11-20 06:07:49,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:07:49,652 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:07:49,670 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,671 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,672 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,672 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,672 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,673 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,673 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,673 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,673 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,674 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,674 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,674 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,674 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,675 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,675 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,675 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,675 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,686 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,686 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,686 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,687 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,688 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,688 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,688 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,689 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,689 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,689 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,709 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,709 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,710 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,710 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,718 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,719 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,719 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,719 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,719 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,720 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,720 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,721 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,721 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,721 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,721 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,721 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,722 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,722 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,722 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,722 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,722 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,725 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,725 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,726 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,727 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,728 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,729 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,729 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,729 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:07:49 BoogieIcfgContainer [2021-11-20 06:07:49,731 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:07:49,732 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:07:49,732 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:07:49,732 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:07:49,733 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:56:15" (3/4) ... [2021-11-20 06:07:49,736 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-20 06:07:49,742 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2021-11-20 06:07:49,742 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-20 06:07:49,749 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-20 06:07:49,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-20 06:07:49,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-20 06:07:49,751 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-20 06:07:49,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (m == \old(m) || !(\old(m) == 0bv32)) && (!(\old(m) == 0bv32) || __retres4 == 0bv32) [2021-11-20 06:07:49,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) [2021-11-20 06:07:49,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) [2021-11-20 06:07:49,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) == 0bv32) [2021-11-20 06:07:49,776 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((!~bvult64(__retres10, a) && tmp == 1bv32) && tmp___0 == 1bv32) && sb == 1bv32) && (!~bvult64(~bvor32(~bvand64(16777215bv32, ma), ~bvshl32(~bvadd64(128bv32, ea), 24bv32)), a) || !(~bvand64(33554432bv32, ma) == 0bv32))) && sa == 1bv32) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: ma == ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1))))) && !~bvult64(a, a)) && (((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) && !~bvult64(__retres10, b)) || (((!(b == 0bv32) && b == a) && !(a == 0bv32)) && !~bvult64(__retres10, b)))) || (((((sa == 0bv32 && a == 0bv32) && b == a) && b == __retres10) && tmp == 0bv32) && b == 0bv32)) || (((((((((((!~bvult64(__retres10, a) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_103 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_103), ~bvshl32(~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), 1bv32), 24bv32)) == __retres10 && !(0bv32 == ~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), ~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), 4294967168bv32))))) && tmp == 1bv32) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && b == a) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_97 : bv32 :: ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_97), ~bvshl32(~bvadd64(~bvlshr64(b, 24bv32), 1bv32), 24bv32)) == __retres10)) && ~bvadd64(127bv32, ea) == ~bvlshr64(b, 24bv32)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32))))) || ((((a == 0bv32 && !~bvugt32(a, a)) && !~bvugt32(__retres10, a)) && !~bvsgt32(sa, 0bv32)) && b == 0bv32)) || ((((((tmp == 1bv32 && a == __retres10) && b == b) && sa == 1bv32) && !(b == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || ((((((tmp == 1bv32 && sa == 1bv32) && !~bvult64(a, a)) && !(b == 0bv32)) && b == a) && b == __retres10) && !(a == 0bv32))) || (((((sa == 0bv32 && !~bvugt32(a, 0bv32)) && b == a) && b == __retres10) && tmp == 0bv32) && 0bv32 == zero)) || (((((((((!~bvult64(__retres10, a) && tmp == 1bv32) && b == b) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32)))) && a == a)) || (((((((tmp == 1bv32 && a == __retres10) && b == b) && !~bvsgt32(sb, 0bv32)) && sa == 1bv32) && !(a == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || (((((((((!~bvult64(__retres10, a) && tmp == 1bv32) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32)))) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32 :: ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))), ~bvshl32(~bvlshr64(b, 24bv32), 24bv32)) == __retres10 && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))) == 0bv32)) && (\exists ULTIMATE.start_addflt_~ea~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: (__retres10 == ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))), ~bvshl32(~bvadd64(128bv32, ULTIMATE.start_addflt_~ea~0#1), 24bv32)) && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))) == 0bv32) && ~bvult64(~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1), 32bv32)))) || (((((((tmp == 1bv32 && !~bvsgt32(sb, 0bv32)) && sa == 1bv32) && !(b == 0bv32)) && b == a) && !(a == 0bv32)) && b == __retres10) && !(a == 0bv32)) [2021-11-20 06:07:49,777 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((tmp == 1bv32 && b == \result) && sa == 1bv32) && !~bvult64(a, a)) && !(b == 0bv32)) && b == a) && b == __retres10) && !(a == 0bv32)) || (((((((((!~bvult64(\result, a) && tmp == 1bv32) && tmp___0 == 1bv32) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32 :: \result == ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))), ~bvshl32(~bvlshr64(b, 24bv32), 24bv32)) && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))) == 0bv32)) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && (\exists ULTIMATE.start_addflt_~ea~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: (\result == ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))), ~bvshl32(~bvadd64(128bv32, ULTIMATE.start_addflt_~ea~0#1), 24bv32)) && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))) == 0bv32) && ~bvult64(~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1), 32bv32))) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32))))) || ((((((sa == 0bv32 && !~bvugt32(a, 0bv32)) && b == \result) && b == a) && b == __retres10) && tmp == 0bv32) && 0bv32 == zero)) || (((((((((!~bvult64(\result, a) && !~bvult64(__retres10, a)) && tmp == 1bv32) && (((((!(b == 0bv32) && b == a) && !~bvult64(\result, b)) && !(a == 0bv32)) && !~bvult64(__retres10, b)) || (((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !~bvult64(\result, b)) && !(a == 0bv32)) && !~bvult64(__retres10, b)))) && tmp___0 == 1bv32) && sb == 1bv32) && (!~bvult64(~bvor32(~bvand64(16777215bv32, ma), ~bvshl32(~bvadd64(128bv32, ea), 24bv32)), a) || !(~bvand64(33554432bv32, ma) == 0bv32))) && sa == 1bv32) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: ma == ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1))))) && !~bvult64(a, a))) || (((((((tmp == 1bv32 && a == __retres10) && b == b) && a == \result) && sa == 1bv32) && !(b == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || ((((((sa == 0bv32 && a == 0bv32) && b == \result) && b == a) && b == __retres10) && tmp == 0bv32) && b == 0bv32)) || (((((((((!~bvult64(\result, a) && tmp == 1bv32) && tmp___0 == 1bv32) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_97 : bv32 :: ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_97), ~bvshl32(~bvadd64(~bvlshr64(b, 24bv32), 1bv32), 24bv32)) == \result)) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_103 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: !(0bv32 == ~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), ~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), 4294967168bv32))) && \result == ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_103), ~bvshl32(~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), 1bv32), 24bv32)))) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32))))) || ((((((((tmp == 1bv32 && !~bvsgt32(sb, 0bv32)) && b == \result) && sa == 1bv32) && !(b == 0bv32)) && b == a) && !(a == 0bv32)) && b == __retres10) && !(a == 0bv32))) || (((((((((!~bvult64(\result, a) && tmp == 1bv32) && b == b) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32)))) && a == a)) || ((((((((tmp == 1bv32 && a == __retres10) && b == b) && !~bvsgt32(sb, 0bv32)) && a == \result) && sa == 1bv32) && !(a == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || (((((!~bvugt32(\result, a) && a == 0bv32) && !~bvugt32(a, a)) && !~bvugt32(__retres10, a)) && !~bvsgt32(sa, 0bv32)) && b == 0bv32) [2021-11-20 06:07:49,777 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((tmp == 1bv32 && sa == 1bv32) && b == a) && b == r_add) || (((b == b && (!(b == 0bv32) || !(a == 0bv32))) && !~bvult64(a, b)) && b == r_add)) || (((!(b == 0bv32) || !(a == 0bv32)) && b == a) && b == r_add)) || ((((tmp == 1bv32 && a == r_add) && sa == 1bv32) && !~bvult64(a, a)) && (b == a || (b == b && !~bvult64(a, b))))) || ((((((!~bvugt32(\result, a) && a == 0bv32) && !~bvugt32(a, a)) && !~bvugt32(r_add, a)) && !~bvugt32(__retres10, a)) && !~bvsgt32(sa, 0bv32)) && b == 0bv32)) || (((b == b && a == r_add) && !~bvult64(a, a)) && !~bvult64(r_add, b)) [2021-11-20 06:07:49,798 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:07:49,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:07:49,799 INFO L158 Benchmark]: Toolchain (without parser) took 695614.59ms. Allocated memory was 58.7MB in the beginning and 197.1MB in the end (delta: 138.4MB). Free memory was 36.7MB in the beginning and 166.4MB in the end (delta: -129.7MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2021-11-20 06:07:49,799 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:07:49,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.93ms. Allocated memory is still 58.7MB. Free memory was 36.5MB in the beginning and 38.4MB in the end (delta: -1.9MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-11-20 06:07:49,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.35ms. Allocated memory is still 58.7MB. Free memory was 38.4MB in the beginning and 36.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:07:49,800 INFO L158 Benchmark]: Boogie Preprocessor took 69.52ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 34.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:07:49,801 INFO L158 Benchmark]: RCFGBuilder took 515.16ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 34.8MB in the beginning and 52.1MB in the end (delta: -17.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2021-11-20 06:07:49,801 INFO L158 Benchmark]: TraceAbstraction took 694579.59ms. Allocated memory was 75.5MB in the beginning and 197.1MB in the end (delta: 121.6MB). Free memory was 51.8MB in the beginning and 171.7MB in the end (delta: -119.9MB). Peak memory consumption was 113.2MB. Max. memory is 16.1GB. [2021-11-20 06:07:49,801 INFO L158 Benchmark]: Witness Printer took 66.66ms. Allocated memory is still 197.1MB. Free memory was 170.6MB in the beginning and 166.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-20 06:07:49,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 39.9MB in the end (delta: 43.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.93ms. Allocated memory is still 58.7MB. Free memory was 36.5MB in the beginning and 38.4MB in the end (delta: -1.9MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.35ms. Allocated memory is still 58.7MB. Free memory was 38.4MB in the beginning and 36.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.52ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 34.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 515.16ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 34.8MB in the beginning and 52.1MB in the end (delta: -17.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * TraceAbstraction took 694579.59ms. Allocated memory was 75.5MB in the beginning and 197.1MB in the end (delta: 121.6MB). Free memory was 51.8MB in the beginning and 171.7MB in the end (delta: -119.9MB). Peak memory consumption was 113.2MB. Max. memory is 16.1GB. * Witness Printer took 66.66ms. Allocated memory is still 197.1MB. Free memory was 170.6MB in the beginning and 166.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] * 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 694.4s, OverallIterations: 35, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 28.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 603.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3551 SdHoareTripleChecker+Valid, 8.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3480 mSDsluCounter, 24166 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2088 IncrementalHoareTripleChecker+Unchecked, 20502 mSDsCounter, 501 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3708 IncrementalHoareTripleChecker+Invalid, 6297 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 501 mSolverCounterUnsat, 3664 mSDtfsCounter, 3708 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3984 GetRequests, 3476 SyntacticMatches, 3 SemanticMatches, 505 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1356 ImplicationChecksByTransitivity, 54.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=371occurred in iteration=15, InterpolantAutomatonStates: 373, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 35 MinimizatonAttempts, 2088 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 215 PreInvPairs, 312 NumberOfFragments, 3518 HoareAnnotationTreeSize, 215 FomulaSimplifications, 17471087 FormulaSimplificationTreeSizeReduction, 422.8s HoareSimplificationTime, 18 FomulaSimplificationsInter, 4505284 FormulaSimplificationTreeSizeReductionInter, 180.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 51.7s InterpolantComputationTime, 1960 NumberOfCodeBlocks, 1942 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 3850 ConstructedInterpolants, 255 QuantifiedInterpolants, 14548 SizeOfPredicates, 264 NumberOfNonLiveVariables, 3546 ConjunctsInSsa, 327 ConjunctsInUnsatCore, 70 InterpolantComputations, 54 PerfectInterpolantSequences, 1443/1530 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: 226]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (m == \old(m) || !(\old(m) == 0bv32)) && (!(\old(m) == 0bv32) || __retres4 == 0bv32) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) - InvariantResult [Line: 84]: Loop Invariant [2021-11-20 06:07:49,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,817 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,818 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,819 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,820 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,822 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,822 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,823 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,824 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,825 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,826 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] Derived loop invariant: ((((((((((((((((tmp == 1bv32 && b == \result) && sa == 1bv32) && !~bvult64(a, a)) && !(b == 0bv32)) && b == a) && b == __retres10) && !(a == 0bv32)) || (((((((((!~bvult64(\result, a) && tmp == 1bv32) && tmp___0 == 1bv32) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32 :: \result == ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))), ~bvshl32(~bvlshr64(b, 24bv32), 24bv32)) && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))) == 0bv32)) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && (\exists ULTIMATE.start_addflt_~ea~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: (\result == ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))), ~bvshl32(~bvadd64(128bv32, ULTIMATE.start_addflt_~ea~0#1), 24bv32)) && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))) == 0bv32) && ~bvult64(~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1), 32bv32))) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32))))) || ((((((sa == 0bv32 && !~bvugt32(a, 0bv32)) && b == \result) && b == a) && b == __retres10) && tmp == 0bv32) && 0bv32 == zero)) || (((((((((!~bvult64(\result, a) && !~bvult64(__retres10, a)) && tmp == 1bv32) && (((((!(b == 0bv32) && b == a) && !~bvult64(\result, b)) && !(a == 0bv32)) && !~bvult64(__retres10, b)) || (((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !~bvult64(\result, b)) && !(a == 0bv32)) && !~bvult64(__retres10, b)))) && tmp___0 == 1bv32) && sb == 1bv32) && (!~bvult64(~bvor32(~bvand64(16777215bv32, ma), ~bvshl32(~bvadd64(128bv32, ea), 24bv32)), a) || !(~bvand64(33554432bv32, ma) == 0bv32))) && sa == 1bv32) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: ma == ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1))))) && !~bvult64(a, a))) || (((((((tmp == 1bv32 && a == __retres10) && b == b) && a == \result) && sa == 1bv32) && !(b == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || ((((((sa == 0bv32 && a == 0bv32) && b == \result) && b == a) && b == __retres10) && tmp == 0bv32) && b == 0bv32)) || (((((((((!~bvult64(\result, a) && tmp == 1bv32) && tmp___0 == 1bv32) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_97 : bv32 :: ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_97), ~bvshl32(~bvadd64(~bvlshr64(b, 24bv32), 1bv32), 24bv32)) == \result)) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_103 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: !(0bv32 == ~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), ~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), 4294967168bv32))) && \result == ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_103), ~bvshl32(~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), 1bv32), 24bv32)))) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32))))) || ((((((((tmp == 1bv32 && !~bvsgt32(sb, 0bv32)) && b == \result) && sa == 1bv32) && !(b == 0bv32)) && b == a) && !(a == 0bv32)) && b == __retres10) && !(a == 0bv32))) || (((((((((!~bvult64(\result, a) && tmp == 1bv32) && b == b) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32)))) && a == a)) || ((((((((tmp == 1bv32 && a == __retres10) && b == b) && !~bvsgt32(sb, 0bv32)) && a == \result) && sa == 1bv32) && !(a == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || (((((!~bvugt32(\result, a) && a == 0bv32) && !~bvugt32(a, a)) && !~bvugt32(__retres10, a)) && !~bvsgt32(sa, 0bv32)) && b == 0bv32) - InvariantResult [Line: 313]: Loop Invariant Derived loop invariant: (((((((tmp == 1bv32 && sa == 1bv32) && b == a) && b == r_add) || (((b == b && (!(b == 0bv32) || !(a == 0bv32))) && !~bvult64(a, b)) && b == r_add)) || (((!(b == 0bv32) || !(a == 0bv32)) && b == a) && b == r_add)) || ((((tmp == 1bv32 && a == r_add) && sa == 1bv32) && !~bvult64(a, a)) && (b == a || (b == b && !~bvult64(a, b))))) || ((((((!~bvugt32(\result, a) && a == 0bv32) && !~bvugt32(a, a)) && !~bvugt32(r_add, a)) && !~bvugt32(__retres10, a)) && !~bvsgt32(sa, 0bv32)) && b == 0bv32)) || (((b == b && a == r_add) && !~bvult64(a, a)) && !~bvult64(r_add, b)) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: !(\old(m) == 0bv32) - InvariantResult [Line: 94]: Loop Invariant [2021-11-20 06:07:49,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,834 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,835 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,836 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,837 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,838 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,840 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,841 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,841 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,841 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_103,QUANTIFIED] [2021-11-20 06:07:49,841 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,842 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_addflt_~ma~0#1_97,QUANTIFIED] [2021-11-20 06:07:49,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,843 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~b#1,QUANTIFIED] [2021-11-20 06:07:49,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~delta~0#1,QUANTIFIED] [2021-11-20 06:07:49,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,844 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] [2021-11-20 06:07:49,845 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~a#1,QUANTIFIED] [2021-11-20 06:07:49,845 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_addflt_~ea~0#1,QUANTIFIED] Derived loop invariant: (((((((((((((((((!~bvult64(__retres10, a) && tmp == 1bv32) && tmp___0 == 1bv32) && sb == 1bv32) && (!~bvult64(~bvor32(~bvand64(16777215bv32, ma), ~bvshl32(~bvadd64(128bv32, ea), 24bv32)), a) || !(~bvand64(33554432bv32, ma) == 0bv32))) && sa == 1bv32) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: ma == ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1))))) && !~bvult64(a, a)) && (((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) && !~bvult64(__retres10, b)) || (((!(b == 0bv32) && b == a) && !(a == 0bv32)) && !~bvult64(__retres10, b)))) || (((((sa == 0bv32 && a == 0bv32) && b == a) && b == __retres10) && tmp == 0bv32) && b == 0bv32)) || (((((((((((!~bvult64(__retres10, a) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_103 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_103), ~bvshl32(~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), 1bv32), 24bv32)) == __retres10 && !(0bv32 == ~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvlshr64(ULTIMATE.start_addflt_~a#1, 24bv32), ~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), 4294967168bv32))))) && tmp == 1bv32) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && b == a) && (\exists v_ULTIMATE.start_addflt_~ma~0#1_97 : bv32 :: ~bvor32(~bvand64(16777215bv32, v_ULTIMATE.start_addflt_~ma~0#1_97), ~bvshl32(~bvadd64(~bvlshr64(b, 24bv32), 1bv32), 24bv32)) == __retres10)) && ~bvadd64(127bv32, ea) == ~bvlshr64(b, 24bv32)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32))))) || ((((a == 0bv32 && !~bvugt32(a, a)) && !~bvugt32(__retres10, a)) && !~bvsgt32(sa, 0bv32)) && b == 0bv32)) || ((((((tmp == 1bv32 && a == __retres10) && b == b) && sa == 1bv32) && !(b == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || ((((((tmp == 1bv32 && sa == 1bv32) && !~bvult64(a, a)) && !(b == 0bv32)) && b == a) && b == __retres10) && !(a == 0bv32))) || (((((sa == 0bv32 && !~bvugt32(a, 0bv32)) && b == a) && b == __retres10) && tmp == 0bv32) && 0bv32 == zero)) || (((((((((!~bvult64(__retres10, a) && tmp == 1bv32) && b == b) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32)))) && a == a)) || (((((((tmp == 1bv32 && a == __retres10) && b == b) && !~bvsgt32(sb, 0bv32)) && sa == 1bv32) && !(a == 0bv32)) && !~bvult64(__retres10, b)) && a == a)) || (((((((((!~bvult64(__retres10, a) && tmp == 1bv32) && tmp___0 == 1bv32) && sb == 1bv32) && ~bvult64(ma, 33554432bv32)) && sa == 1bv32) && !~bvult64(a, a)) && ((((b == b && !(b == 0bv32)) && !~bvult64(a, b)) && !(a == 0bv32)) || ((!(b == 0bv32) && b == a) && !(a == 0bv32)))) && (\exists ULTIMATE.start_addflt_~b#1 : bv32, ULTIMATE.start_addflt_~delta~0#1 : bv32 :: ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))), ~bvshl32(~bvlshr64(b, 24bv32), 24bv32)) == __retres10 && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~b#1)), ULTIMATE.start_addflt_~delta~0#1), ~bvor32(16777216bv32, ~bvand64(16777215bv32, b)))) == 0bv32)) && (\exists ULTIMATE.start_addflt_~ea~0#1 : bv32, ULTIMATE.start_addflt_~a#1 : bv32 :: (__retres10 == ~bvor32(~bvand64(16777215bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))), ~bvshl32(~bvadd64(128bv32, ULTIMATE.start_addflt_~ea~0#1), 24bv32)) && ~bvand64(33554432bv32, ~bvadd64(~bvlshr64(~bvor32(16777216bv32, ~bvand64(16777215bv32, a)), ~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1)), ~bvor32(16777216bv32, ~bvand64(16777215bv32, ULTIMATE.start_addflt_~a#1)))) == 0bv32) && ~bvult64(~bvadd64(~bvneg32(~bvadd64(~bvlshr64(a, 24bv32), 4294967168bv32)), ULTIMATE.start_addflt_~ea~0#1), 32bv32)))) || (((((((tmp == 1bv32 && !~bvsgt32(sb, 0bv32)) && sa == 1bv32) && !(b == 0bv32)) && b == a) && !(a == 0bv32)) && b == __retres10) && !(a == 0bv32)) RESULT: Ultimate proved your program to be correct! [2021-11-20 06:07:49,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edd5663c-7e1c-4f1e-a02c-5b8fd6de004b/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