./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y --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 64bit --witnessprinter.graph.data.programhash 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:54:07,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:54:07,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:54:07,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:54:07,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:54:07,137 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:54:07,142 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:54:07,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:54:07,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:54:07,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:54:07,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:54:07,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:54:07,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:54:07,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:54:07,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:54:07,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:54:07,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:54:07,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:54:07,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:54:07,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:54:07,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:54:07,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:54:07,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:54:07,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:54:07,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:54:07,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:54:07,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:54:07,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:54:07,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:54:07,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:54:07,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:54:07,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:54:07,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:54:07,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:54:07,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:54:07,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:54:07,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:54:07,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:54:07,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:54:07,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:54:07,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:54:07,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 18:54:07,317 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:54:07,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:54:07,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:54:07,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:54:07,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:54:07,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:54:07,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:54:07,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:54:07,321 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:54:07,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:54:07,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:54:07,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:54:07,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:54:07,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:54:07,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:54:07,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:54:07,324 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:54:07,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:54:07,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:54:07,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:54:07,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:54:07,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:54:07,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:54:07,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:54:07,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:54:07,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:54:07,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:54:07,327 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 18:54:07,327 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 18:54:07,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:54:07,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:54:07,327 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_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ba89c3eceb6ce3b33f7045e58fd9531469c7ed109a8240b2f15aad930b1478d [2021-11-13 18:54:07,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:54:07,744 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:54:07,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:54:07,749 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:54:07,750 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:54:07,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-13 18:54:07,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/data/f7a20f0c4/b09ce5befb6e41b0a93cae232a418ead/FLAG0e95c1eaf [2021-11-13 18:54:08,912 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:54:08,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-13 18:54:08,970 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/data/f7a20f0c4/b09ce5befb6e41b0a93cae232a418ead/FLAG0e95c1eaf [2021-11-13 18:54:09,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/data/f7a20f0c4/b09ce5befb6e41b0a93cae232a418ead [2021-11-13 18:54:09,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:54:09,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:54:09,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:54:09,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:54:09,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:54:09,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:09" (1/1) ... [2021-11-13 18:54:09,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec7b322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:09, skipping insertion in model container [2021-11-13 18:54:09,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:54:09" (1/1) ... [2021-11-13 18:54:09,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:54:09,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:54:10,745 WARN L228 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_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-13 18:54:12,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:54:12,372 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:54:12,541 WARN L228 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_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i[170192,170205] [2021-11-13 18:54:12,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:54:13,161 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:54:13,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13 WrapperNode [2021-11-13 18:54:13,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:54:13,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:54:13,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:54:13,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:54:13,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,587 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:54:13,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:54:13,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:54:13,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:54:13,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:13,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:54:13,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:54:13,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:54:13,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:54:13,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (1/1) ... [2021-11-13 18:54:14,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:54:14,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:54:14,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:54:14,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:54:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_do_ioctl [2021-11-13 18:54:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_do_ioctl [2021-11-13 18:54:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_disable_cam_entry_post [2021-11-13 18:54:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_disable_cam_entry_post [2021-11-13 18:54:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 18:54:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 18:54:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 18:54:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 18:54:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put [2021-11-13 18:54:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put [2021-11-13 18:54:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_write [2021-11-13 18:54:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_write [2021-11-13 18:54:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 18:54:14,090 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 18:54:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_select_mii [2021-11-13 18:54:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_select_mii [2021-11-13 18:54:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_edmac [2021-11-13 18:54:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_edmac [2021-11-13 18:54:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_read [2021-11-13 18:54:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_read [2021-11-13 18:54:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 18:54:14,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 18:54:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_write [2021-11-13 18:54:14,093 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_write [2021-11-13 18:54:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-13 18:54:14,093 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kmalloc [2021-11-13 18:54:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kmalloc [2021-11-13 18:54:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-11-13 18:54:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-11-13 18:54:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_disable_cam_entry_table [2021-11-13 18:54:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_disable_cam_entry_table [2021-11-13 18:54:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-13 18:54:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-13 18:54:14,094 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_vtag_index [2021-11-13 18:54:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_vtag_index [2021-11-13 18:54:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_edtrr_trns [2021-11-13 18:54:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_edtrr_trns [2021-11-13 18:54:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 18:54:14,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 18:54:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_giga [2021-11-13 18:54:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_giga [2021-11-13 18:54:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure netif_napi_del [2021-11-13 18:54:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_napi_del [2021-11-13 18:54:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-13 18:54:14,096 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-13 18:54:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-13 18:54:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-13 18:54:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure devm_ioremap_resource [2021-11-13 18:54:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_ioremap_resource [2021-11-13 18:54:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:54:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:54:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure bb_clr [2021-11-13 18:54:14,097 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_clr [2021-11-13 18:54:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 18:54:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 18:54:14,098 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_get_sync [2021-11-13 18:54:14,098 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_get_sync [2021-11-13 18:54:14,099 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_duplex [2021-11-13 18:54:14,100 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_duplex [2021-11-13 18:54:14,100 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-13 18:54:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-13 18:54:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 18:54:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 18:54:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_post_reg_offset [2021-11-13 18:54:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_post_reg_offset [2021-11-13 18:54:14,101 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset_r8a7740 [2021-11-13 18:54:14,101 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset_r8a7740 [2021-11-13 18:54:14,102 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 18:54:14,102 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 18:54:14,102 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset_giga [2021-11-13 18:54:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset_giga [2021-11-13 18:54:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_free_dma_buffer [2021-11-13 18:54:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_free_dma_buffer [2021-11-13 18:54:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:54:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_busy [2021-11-13 18:54:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_busy [2021-11-13 18:54:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_r8a777x [2021-11-13 18:54:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_r8a777x [2021-11-13 18:54:14,104 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-13 18:54:14,104 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-13 18:54:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure phys_to_virt [2021-11-13 18:54:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure phys_to_virt [2021-11-13 18:54:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-13 18:54:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-13 18:54:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:54:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-11-13 18:54:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-11-13 18:54:14,105 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb_12 [2021-11-13 18:54:14,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb_12 [2021-11-13 18:54:14,106 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-13 18:54:14,106 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-13 18:54:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 18:54:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 18:54:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-13 18:54:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-13 18:54:14,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-13 18:54:14,107 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 18:54:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 18:54:14,108 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tx_timeout [2021-11-13 18:54:14,108 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tx_timeout [2021-11-13 18:54:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_resource [2021-11-13 18:54:14,109 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_resource [2021-11-13 18:54:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_runtime_nop [2021-11-13 18:54:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_runtime_nop [2021-11-13 18:54:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:54:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 18:54:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_ring_free [2021-11-13 18:54:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_ring_free [2021-11-13 18:54:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 18:54:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 18:54:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_open [2021-11-13 18:54:14,111 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_open [2021-11-13 18:54:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-13 18:54:14,111 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-13 18:54:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 18:54:14,111 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 18:54:14,111 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_multicast_list [2021-11-13 18:54:14,112 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_multicast_list [2021-11-13 18:54:14,112 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 18:54:14,113 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 18:54:14,115 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 18:54:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 18:54:14,116 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_chip_reset [2021-11-13 18:54:14,116 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_chip_reset [2021-11-13 18:54:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 18:54:14,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 18:54:14,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 18:54:14,119 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_put_sync [2021-11-13 18:54:14,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_put_sync [2021-11-13 18:54:14,125 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-13 18:54:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-13 18:54:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_read_entry [2021-11-13 18:54:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_read_entry [2021-11-13 18:54:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_txfree [2021-11-13 18:54:14,126 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_txfree [2021-11-13 18:54:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 18:54:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_start_xmit [2021-11-13 18:54:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_start_xmit [2021-11-13 18:54:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2021-11-13 18:54:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2021-11-13 18:54:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_rcv_snd_disable [2021-11-13 18:54:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_rcv_snd_disable [2021-11-13 18:54:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-11-13 18:54:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-11-13 18:54:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-13 18:54:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-13 18:54:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:54:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 18:54:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 18:54:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-13 18:54:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-13 18:54:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_close [2021-11-13 18:54:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_close [2021-11-13 18:54:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_read [2021-11-13 18:54:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_read [2021-11-13 18:54:14,129 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_soft_swap [2021-11-13 18:54:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_soft_swap [2021-11-13 18:54:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 18:54:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 18:54:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-11-13 18:54:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-11-13 18:54:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_is_rz_fast_ether [2021-11-13 18:54:14,130 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_is_rz_fast_ether [2021-11-13 18:54:14,130 INFO L130 BoogieDeclarations]: Found specification of procedure bb_set [2021-11-13 18:54:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_set [2021-11-13 18:54:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_find_entry [2021-11-13 18:54:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_find_entry [2021-11-13 18:54:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 18:54:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 18:54:14,131 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 18:54:14,131 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 18:54:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_dev_init [2021-11-13 18:54:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_dev_init [2021-11-13 18:54:14,132 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_get_stats [2021-11-13 18:54:14,132 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_get_stats [2021-11-13 18:54:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:54:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_vlan_rx_kill_vid [2021-11-13 18:54:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_vlan_rx_kill_vid [2021-11-13 18:54:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_sh7724 [2021-11-13 18:54:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_sh7724 [2021-11-13 18:54:14,133 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-13 18:54:14,133 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-13 18:54:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_disable [2021-11-13 18:54:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_disable [2021-11-13 18:54:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_adjust_link [2021-11-13 18:54:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_adjust_link [2021-11-13 18:54:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 18:54:14,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 18:54:14,134 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u16 [2021-11-13 18:54:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_vlan_rx_add_vid [2021-11-13 18:54:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_vlan_rx_add_vid [2021-11-13 18:54:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_ring_init [2021-11-13 18:54:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_ring_init [2021-11-13 18:54:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure __pm_runtime_idle [2021-11-13 18:54:14,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __pm_runtime_idle [2021-11-13 18:54:14,135 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2021-11-13 18:54:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2021-11-13 18:54:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:54:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_purge_mcast [2021-11-13 18:54:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_purge_mcast [2021-11-13 18:54:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 18:54:14,136 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 18:54:14,136 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-11-13 18:54:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-11-13 18:54:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure is_multicast_ether_addr [2021-11-13 18:54:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure is_multicast_ether_addr [2021-11-13 18:54:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 18:54:14,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 18:54:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:54:14,137 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-13 18:54:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 18:54:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 18:54:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:54:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 18:54:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2021-11-13 18:54:14,138 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2021-11-13 18:54:14,138 INFO L130 BoogieDeclarations]: Found specification of procedure mdiobus_register [2021-11-13 18:54:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure mdiobus_register [2021-11-13 18:54:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_is_gether [2021-11-13 18:54:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_is_gether [2021-11-13 18:54:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-13 18:54:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-13 18:54:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_sh7757 [2021-11-13 18:54:14,139 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_sh7757 [2021-11-13 18:54:14,139 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_receive_align [2021-11-13 18:54:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_receive_align [2021-11-13 18:54:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_rcv_snd_enable [2021-11-13 18:54:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_rcv_snd_enable [2021-11-13 18:54:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_offset [2021-11-13 18:54:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_offset [2021-11-13 18:54:14,140 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_set_rate_gether [2021-11-13 18:54:14,140 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_set_rate_gether [2021-11-13 18:54:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure napi_disable [2021-11-13 18:54:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure napi_disable [2021-11-13 18:54:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-13 18:54:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-13 18:54:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 18:54:14,141 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 18:54:14,141 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-13 18:54:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-13 18:54:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-13 18:54:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-13 18:54:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:54:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure sh_mdio_release [2021-11-13 18:54:14,142 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_mdio_release [2021-11-13 18:54:14,142 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_write_entry [2021-11-13 18:54:14,143 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_write_entry [2021-11-13 18:54:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure sh_eth_tsu_get_post_bit [2021-11-13 18:54:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure sh_eth_tsu_get_post_bit [2021-11-13 18:54:14,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:54:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:54:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure free_mdio_bitbang [2021-11-13 18:54:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure free_mdio_bitbang [2021-11-13 18:54:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-13 18:54:14,148 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-13 18:54:15,605 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 18:55:23,660 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:55:23,661 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-13 18:55:23,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:55:23 BoogieIcfgContainer [2021-11-13 18:55:23,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:55:23,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:55:23,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:55:23,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:55:23,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:54:09" (1/3) ... [2021-11-13 18:55:23,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea6a1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:55:23, skipping insertion in model container [2021-11-13 18:55:23,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:54:13" (2/3) ... [2021-11-13 18:55:23,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea6a1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:55:23, skipping insertion in model container [2021-11-13 18:55:23,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:55:23" (3/3) ... [2021-11-13 18:55:23,676 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--renesas--sh_eth.ko-entry_point.cil.out.i [2021-11-13 18:55:23,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:55:23,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 18:55:23,765 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:55:23,775 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 [2021-11-13 18:55:23,775 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 18:55:23,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 2349 states, 1612 states have (on average 1.369727047146402) internal successors, (2208), 1690 states have internal predecessors, (2208), 624 states have call successors, (624), 118 states have call predecessors, (624), 117 states have return successors, (605), 579 states have call predecessors, (605), 605 states have call successors, (605) [2021-11-13 18:55:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 18:55:23,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:23,888 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:23,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash -265393469, now seen corresponding path program 1 times [2021-11-13 18:55:23,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:23,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285383701] [2021-11-13 18:55:23,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:23,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:55:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:55:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:55:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:55:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:55:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:55:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:55:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:55:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:55:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:55:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:25,344 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 18:55:25,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:25,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285383701] [2021-11-13 18:55:25,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285383701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:25,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:25,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:55:25,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842960388] [2021-11-13 18:55:25,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:25,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:55:25,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:55:25,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:55:25,404 INFO L87 Difference]: Start difference. First operand has 2349 states, 1612 states have (on average 1.369727047146402) internal successors, (2208), 1690 states have internal predecessors, (2208), 624 states have call successors, (624), 118 states have call predecessors, (624), 117 states have return successors, (605), 579 states have call predecessors, (605), 605 states have call successors, (605) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:55:27,540 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:29,679 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:31,810 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:55:48,144 INFO L93 Difference]: Finished difference Result 7576 states and 11447 transitions. [2021-11-13 18:55:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:55:48,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 87 [2021-11-13 18:55:48,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:55:48,228 INFO L225 Difference]: With dead ends: 7576 [2021-11-13 18:55:48,228 INFO L226 Difference]: Without dead ends: 5176 [2021-11-13 18:55:48,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:55:48,256 INFO L933 BasicCegarLoop]: 3482 mSDtfsCounter, 6183 mSDsluCounter, 5048 mSDsCounter, 0 mSdLazyCounter, 4029 mSolverCounterSat, 4277 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19455.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6577 SdHoareTripleChecker+Valid, 8530 SdHoareTripleChecker+Invalid, 8309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 151.70ms SdHoareTripleChecker+Time, 4277 IncrementalHoareTripleChecker+Valid, 4029 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21784.44ms IncrementalHoareTripleChecker+Time [2021-11-13 18:55:48,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6577 Valid, 8530 Invalid, 8309 Unknown, 0 Unchecked, 151.70ms Time], IncrementalHoareTripleChecker [4277 Valid, 4029 Invalid, 3 Unknown, 0 Unchecked, 21784.44ms Time] [2021-11-13 18:55:48,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5176 states. [2021-11-13 18:55:48,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5176 to 4520. [2021-11-13 18:55:48,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 3116 states have (on average 1.3568677792041077) internal successors, (4228), 3218 states have internal predecessors, (4228), 1171 states have call successors, (1171), 233 states have call predecessors, (1171), 232 states have return successors, (1170), 1118 states have call predecessors, (1170), 1170 states have call successors, (1170) [2021-11-13 18:55:48,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 6569 transitions. [2021-11-13 18:55:48,785 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 6569 transitions. Word has length 87 [2021-11-13 18:55:48,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:55:48,788 INFO L470 AbstractCegarLoop]: Abstraction has 4520 states and 6569 transitions. [2021-11-13 18:55:48,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-11-13 18:55:48,789 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 6569 transitions. [2021-11-13 18:55:48,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-13 18:55:48,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:55:48,803 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:55:48,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:55:48,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:55:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:55:48,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1374946843, now seen corresponding path program 1 times [2021-11-13 18:55:48,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:55:48,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332664089] [2021-11-13 18:55:48,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:55:48,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:55:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:55:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:55:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:55:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:55:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:55:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:55:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:55:49,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:55:49,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:55:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:55:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:55:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 18:55:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:55:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-13 18:55:49,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:55:49,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332664089] [2021-11-13 18:55:49,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332664089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:55:49,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:55:49,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:55:49,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705034398] [2021-11-13 18:55:49,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:55:49,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:55:49,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:55:49,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:55:49,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:55:49,697 INFO L87 Difference]: Start difference. First operand 4520 states and 6569 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:55:51,825 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:55:53,948 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:13,530 INFO L93 Difference]: Finished difference Result 14789 states and 21998 transitions. [2021-11-13 18:56:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:56:13,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 97 [2021-11-13 18:56:13,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:13,648 INFO L225 Difference]: With dead ends: 14789 [2021-11-13 18:56:13,648 INFO L226 Difference]: Without dead ends: 10289 [2021-11-13 18:56:13,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:56:13,689 INFO L933 BasicCegarLoop]: 3708 mSDtfsCounter, 6030 mSDsluCounter, 11536 mSDsCounter, 0 mSdLazyCounter, 6682 mSolverCounterSat, 4077 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20540.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6431 SdHoareTripleChecker+Valid, 15244 SdHoareTripleChecker+Invalid, 10761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 137.20ms SdHoareTripleChecker+Time, 4077 IncrementalHoareTripleChecker+Valid, 6682 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22879.81ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:13,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6431 Valid, 15244 Invalid, 10761 Unknown, 0 Unchecked, 137.20ms Time], IncrementalHoareTripleChecker [4077 Valid, 6682 Invalid, 2 Unknown, 0 Unchecked, 22879.81ms Time] [2021-11-13 18:56:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10289 states. [2021-11-13 18:56:14,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10289 to 9263. [2021-11-13 18:56:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9263 states, 6384 states have (on average 1.356986215538847) internal successors, (8663), 6606 states have internal predecessors, (8663), 2388 states have call successors, (2388), 465 states have call predecessors, (2388), 490 states have return successors, (2560), 2293 states have call predecessors, (2560), 2387 states have call successors, (2560) [2021-11-13 18:56:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9263 states to 9263 states and 13611 transitions. [2021-11-13 18:56:14,470 INFO L78 Accepts]: Start accepts. Automaton has 9263 states and 13611 transitions. Word has length 97 [2021-11-13 18:56:14,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:14,471 INFO L470 AbstractCegarLoop]: Abstraction has 9263 states and 13611 transitions. [2021-11-13 18:56:14,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 5 states have internal predecessors, (42), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-13 18:56:14,472 INFO L276 IsEmpty]: Start isEmpty. Operand 9263 states and 13611 transitions. [2021-11-13 18:56:14,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-13 18:56:14,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:14,506 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:56:14,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 18:56:14,507 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:14,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1877791108, now seen corresponding path program 1 times [2021-11-13 18:56:14,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:14,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715867255] [2021-11-13 18:56:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:14,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:56:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:56:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:56:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:56:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:14,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:56:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:56:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:56:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:56:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:56:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:56:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:56:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:56:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:56:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:56:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:15,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:56:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:56:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-13 18:56:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-13 18:56:15,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:15,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 18:56:15,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:15,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715867255] [2021-11-13 18:56:15,359 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-13 18:56:15,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411664956] [2021-11-13 18:56:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:15,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:15,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:56:15,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:56:15,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:56:16,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:16,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 4931 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:56:16,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:56:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-13 18:56:17,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:56:17,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411664956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:17,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:17,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:56:17,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897805295] [2021-11-13 18:56:17,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:17,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:56:17,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:56:17,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:56:17,352 INFO L87 Difference]: Start difference. First operand 9263 states and 13611 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:56:17,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:17,809 INFO L93 Difference]: Finished difference Result 18504 states and 27193 transitions. [2021-11-13 18:56:17,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:56:17,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 218 [2021-11-13 18:56:17,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:17,900 INFO L225 Difference]: With dead ends: 18504 [2021-11-13 18:56:17,900 INFO L226 Difference]: Without dead ends: 9267 [2021-11-13 18:56:17,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:56:17,968 INFO L933 BasicCegarLoop]: 3339 mSDtfsCounter, 0 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6673 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.99ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:17,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6673 Invalid, 6 Unknown, 0 Unchecked, 9.62ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.99ms Time] [2021-11-13 18:56:17,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9267 states. [2021-11-13 18:56:18,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9267 to 9267. [2021-11-13 18:56:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9267 states, 6388 states have (on average 1.356762680025047) internal successors, (8667), 6610 states have internal predecessors, (8667), 2388 states have call successors, (2388), 465 states have call predecessors, (2388), 490 states have return successors, (2560), 2293 states have call predecessors, (2560), 2387 states have call successors, (2560) [2021-11-13 18:56:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9267 states to 9267 states and 13615 transitions. [2021-11-13 18:56:18,605 INFO L78 Accepts]: Start accepts. Automaton has 9267 states and 13615 transitions. Word has length 218 [2021-11-13 18:56:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:18,606 INFO L470 AbstractCegarLoop]: Abstraction has 9267 states and 13615 transitions. [2021-11-13 18:56:18,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:56:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 9267 states and 13615 transitions. [2021-11-13 18:56:18,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-13 18:56:18,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:18,636 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:56:18,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:56:18,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:18,851 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:18,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:18,852 INFO L85 PathProgramCache]: Analyzing trace with hash 574700474, now seen corresponding path program 1 times [2021-11-13 18:56:18,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:18,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457003236] [2021-11-13 18:56:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:18,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:56:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:56:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:56:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:56:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:56:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:56:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:56:19,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:56:19,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:56:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:56:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:56:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:56:19,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:56:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:56:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:56:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:56:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-13 18:56:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-13 18:56:19,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:19,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 18:56:19,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:19,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457003236] [2021-11-13 18:56:19,534 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-13 18:56:19,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395254175] [2021-11-13 18:56:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:19,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:56:19,536 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:56:19,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:56:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:20,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 4934 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:56:20,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:56:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-13 18:56:21,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:56:21,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395254175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:21,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:21,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:56:21,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550239216] [2021-11-13 18:56:21,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:21,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:56:21,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:21,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:56:21,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:56:21,290 INFO L87 Difference]: Start difference. First operand 9267 states and 13615 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:56:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:21,669 INFO L93 Difference]: Finished difference Result 18512 states and 27201 transitions. [2021-11-13 18:56:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:56:21,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 218 [2021-11-13 18:56:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:21,730 INFO L225 Difference]: With dead ends: 18512 [2021-11-13 18:56:21,731 INFO L226 Difference]: Without dead ends: 9271 [2021-11-13 18:56:21,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:56:21,771 INFO L933 BasicCegarLoop]: 3339 mSDtfsCounter, 0 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6673 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.86ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:21,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6673 Invalid, 6 Unknown, 0 Unchecked, 8.54ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.86ms Time] [2021-11-13 18:56:21,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9271 states. [2021-11-13 18:56:22,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9271 to 9271. [2021-11-13 18:56:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9271 states, 6392 states have (on average 1.3565394242803503) internal successors, (8671), 6614 states have internal predecessors, (8671), 2388 states have call successors, (2388), 465 states have call predecessors, (2388), 490 states have return successors, (2560), 2293 states have call predecessors, (2560), 2387 states have call successors, (2560) [2021-11-13 18:56:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9271 states to 9271 states and 13619 transitions. [2021-11-13 18:56:22,222 INFO L78 Accepts]: Start accepts. Automaton has 9271 states and 13619 transitions. Word has length 218 [2021-11-13 18:56:22,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:22,225 INFO L470 AbstractCegarLoop]: Abstraction has 9271 states and 13619 transitions. [2021-11-13 18:56:22,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:56:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 9271 states and 13619 transitions. [2021-11-13 18:56:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-13 18:56:22,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:22,257 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:56:22,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:56:22,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:22,480 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:22,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash 242057336, now seen corresponding path program 1 times [2021-11-13 18:56:22,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:22,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384825495] [2021-11-13 18:56:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:22,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:56:22,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:56:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:56:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:56:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:56:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:56:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:56:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:56:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:56:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:56:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:56:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-13 18:56:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 18:56:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 18:56:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:56:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-13 18:56:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-13 18:56:23,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-11-13 18:56:23,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:23,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-11-13 18:56:23,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:23,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384825495] [2021-11-13 18:56:23,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-11-13 18:56:23,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803578591] [2021-11-13 18:56:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:23,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:23,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:56:23,241 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:56:23,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:56:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:24,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 4937 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:56:24,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:56:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-13 18:56:25,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:56:25,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803578591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:25,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:25,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:56:25,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632713299] [2021-11-13 18:56:25,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:25,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:56:25,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:56:25,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:56:25,045 INFO L87 Difference]: Start difference. First operand 9271 states and 13619 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:56:25,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:25,776 INFO L93 Difference]: Finished difference Result 27129 states and 39801 transitions. [2021-11-13 18:56:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:56:25,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 218 [2021-11-13 18:56:25,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:25,872 INFO L225 Difference]: With dead ends: 27129 [2021-11-13 18:56:25,873 INFO L226 Difference]: Without dead ends: 17884 [2021-11-13 18:56:25,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:56:25,915 INFO L933 BasicCegarLoop]: 3878 mSDtfsCounter, 3062 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3062 SdHoareTripleChecker+Valid, 7145 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.38ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.47ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:25,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3062 Valid, 7145 Invalid, 60 Unknown, 0 Unchecked, 12.38ms Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 167.47ms Time] [2021-11-13 18:56:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17884 states. [2021-11-13 18:56:26,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17884 to 17871. [2021-11-13 18:56:26,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17871 states, 12288 states have (on average 1.353271484375) internal successors, (16629), 12730 states have internal predecessors, (16629), 4602 states have call successors, (4602), 929 states have call predecessors, (4602), 980 states have return successors, (4932), 4411 states have call predecessors, (4932), 4601 states have call successors, (4932) [2021-11-13 18:56:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17871 states to 17871 states and 26163 transitions. [2021-11-13 18:56:26,850 INFO L78 Accepts]: Start accepts. Automaton has 17871 states and 26163 transitions. Word has length 218 [2021-11-13 18:56:26,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:26,851 INFO L470 AbstractCegarLoop]: Abstraction has 17871 states and 26163 transitions. [2021-11-13 18:56:26,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-13 18:56:26,852 INFO L276 IsEmpty]: Start isEmpty. Operand 17871 states and 26163 transitions. [2021-11-13 18:56:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-13 18:56:26,889 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:26,890 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:56:26,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:56:27,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:56:27,105 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:27,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:27,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1713027884, now seen corresponding path program 1 times [2021-11-13 18:56:27,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:27,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4992365] [2021-11-13 18:56:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:27,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:56:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:56:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:56:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:56:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:56:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:56:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:56:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:56:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:56:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:56:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:56:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-13 18:56:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:27,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:56:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-13 18:56:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:56:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:56:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:56:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:28,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 18:56:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:28,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:56:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-11-13 18:56:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-11-13 18:56:28,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:28,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4992365] [2021-11-13 18:56:28,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4992365] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:28,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:28,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-13 18:56:28,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065346047] [2021-11-13 18:56:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:28,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 18:56:28,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:28,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 18:56:28,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 18:56:28,232 INFO L87 Difference]: Start difference. First operand 17871 states and 26163 transitions. Second operand has 13 states, 12 states have (on average 12.0) internal successors, (144), 7 states have internal predecessors, (144), 3 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-13 18:56:30,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:32,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:56:51,300 INFO L93 Difference]: Finished difference Result 37224 states and 55131 transitions. [2021-11-13 18:56:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:56:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.0) internal successors, (144), 7 states have internal predecessors, (144), 3 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) Word has length 262 [2021-11-13 18:56:51,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:56:51,453 INFO L225 Difference]: With dead ends: 37224 [2021-11-13 18:56:51,454 INFO L226 Difference]: Without dead ends: 19379 [2021-11-13 18:56:51,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=402, Unknown=0, NotChecked=0, Total=552 [2021-11-13 18:56:51,551 INFO L933 BasicCegarLoop]: 2874 mSDtfsCounter, 6129 mSDsluCounter, 15697 mSDsCounter, 0 mSdLazyCounter, 8386 mSolverCounterSat, 4264 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19224.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6502 SdHoareTripleChecker+Valid, 18571 SdHoareTripleChecker+Invalid, 12652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 148.32ms SdHoareTripleChecker+Time, 4264 IncrementalHoareTripleChecker+Valid, 8386 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21426.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:56:51,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6502 Valid, 18571 Invalid, 12652 Unknown, 0 Unchecked, 148.32ms Time], IncrementalHoareTripleChecker [4264 Valid, 8386 Invalid, 2 Unknown, 0 Unchecked, 21426.59ms Time] [2021-11-13 18:56:51,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19379 states. [2021-11-13 18:56:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19379 to 17279. [2021-11-13 18:56:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17279 states, 11840 states have (on average 1.3423141891891892) internal successors, (15893), 12278 states have internal predecessors, (15893), 4450 states have call successors, (4450), 929 states have call predecessors, (4450), 988 states have return successors, (4776), 4263 states have call predecessors, (4776), 4449 states have call successors, (4776) [2021-11-13 18:56:52,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17279 states to 17279 states and 25119 transitions. [2021-11-13 18:56:52,719 INFO L78 Accepts]: Start accepts. Automaton has 17279 states and 25119 transitions. Word has length 262 [2021-11-13 18:56:52,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:56:52,720 INFO L470 AbstractCegarLoop]: Abstraction has 17279 states and 25119 transitions. [2021-11-13 18:56:52,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.0) internal successors, (144), 7 states have internal predecessors, (144), 3 states have call successors, (33), 6 states have call predecessors, (33), 3 states have return successors, (32), 4 states have call predecessors, (32), 3 states have call successors, (32) [2021-11-13 18:56:52,720 INFO L276 IsEmpty]: Start isEmpty. Operand 17279 states and 25119 transitions. [2021-11-13 18:56:52,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-13 18:56:52,763 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:56:52,763 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:56:52,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 18:56:52,764 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:56:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:56:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash 438705357, now seen corresponding path program 1 times [2021-11-13 18:56:52,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:56:52,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71552989] [2021-11-13 18:56:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:56:52,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:56:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:56:53,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:56:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:56:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:56:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:56:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:56:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:56:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:56:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:56:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:56:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:56:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 18:56:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:56:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:56:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:56:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 18:56:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:56:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:56:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 18:56:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:56:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:56:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:56:53,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-13 18:56:53,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:56:53,841 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-11-13 18:56:53,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:56:53,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71552989] [2021-11-13 18:56:53,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71552989] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:56:53,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:56:53,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 18:56:53,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905518976] [2021-11-13 18:56:53,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:56:53,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:56:53,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:56:53,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:56:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:56:53,845 INFO L87 Difference]: Start difference. First operand 17279 states and 25119 transitions. Second operand has 8 states, 8 states have (on average 18.5) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-13 18:56:55,951 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:56:58,061 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:00,222 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:18,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:18,690 INFO L93 Difference]: Finished difference Result 52129 states and 77090 transitions. [2021-11-13 18:57:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 18:57:18,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 267 [2021-11-13 18:57:18,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:18,881 INFO L225 Difference]: With dead ends: 52129 [2021-11-13 18:57:18,881 INFO L226 Difference]: Without dead ends: 34876 [2021-11-13 18:57:18,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-13 18:57:18,967 INFO L933 BasicCegarLoop]: 3319 mSDtfsCounter, 6631 mSDsluCounter, 7951 mSDsCounter, 0 mSdLazyCounter, 6760 mSolverCounterSat, 5090 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21253.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7181 SdHoareTripleChecker+Valid, 11270 SdHoareTripleChecker+Invalid, 11853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 100.32ms SdHoareTripleChecker+Time, 5090 IncrementalHoareTripleChecker+Valid, 6760 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23421.30ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:18,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7181 Valid, 11270 Invalid, 11853 Unknown, 0 Unchecked, 100.32ms Time], IncrementalHoareTripleChecker [5090 Valid, 6760 Invalid, 3 Unknown, 0 Unchecked, 23421.30ms Time] [2021-11-13 18:57:19,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34876 states. [2021-11-13 18:57:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34876 to 30939. [2021-11-13 18:57:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30939 states, 21238 states have (on average 1.3441943685846125) internal successors, (28548), 22098 states have internal predecessors, (28548), 7896 states have call successors, (7896), 1689 states have call predecessors, (7896), 1804 states have return successors, (8483), 7515 states have call predecessors, (8483), 7895 states have call successors, (8483) [2021-11-13 18:57:20,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30939 states to 30939 states and 44927 transitions. [2021-11-13 18:57:20,880 INFO L78 Accepts]: Start accepts. Automaton has 30939 states and 44927 transitions. Word has length 267 [2021-11-13 18:57:20,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:20,881 INFO L470 AbstractCegarLoop]: Abstraction has 30939 states and 44927 transitions. [2021-11-13 18:57:20,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.5) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (34), 6 states have call predecessors, (34), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-13 18:57:20,881 INFO L276 IsEmpty]: Start isEmpty. Operand 30939 states and 44927 transitions. [2021-11-13 18:57:20,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-13 18:57:20,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:20,929 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:57:20,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 18:57:20,929 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1028049928, now seen corresponding path program 1 times [2021-11-13 18:57:20,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:20,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171713427] [2021-11-13 18:57:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:20,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 18:57:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 18:57:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 18:57:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 18:57:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 18:57:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-11-13 18:57:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-13 18:57:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:57:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 18:57:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-13 18:57:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:57:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 18:57:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-13 18:57:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 18:57:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:57:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 18:57:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 18:57:21,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-11-13 18:57:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 18:57:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-11-13 18:57:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-13 18:57:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 18:57:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 18:57:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-11-13 18:57:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-11-13 18:57:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-11-13 18:57:21,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:21,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171713427] [2021-11-13 18:57:21,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171713427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:57:21,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:57:21,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 18:57:21,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505847729] [2021-11-13 18:57:21,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:57:21,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 18:57:21,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:21,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 18:57:21,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:57:21,698 INFO L87 Difference]: Start difference. First operand 30939 states and 44927 transitions. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 18:57:23,806 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:25,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:57:40,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:40,175 INFO L93 Difference]: Finished difference Result 99533 states and 146288 transitions. [2021-11-13 18:57:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:57:40,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 260 [2021-11-13 18:57:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:40,846 INFO L225 Difference]: With dead ends: 99533 [2021-11-13 18:57:40,847 INFO L226 Difference]: Without dead ends: 68620 [2021-11-13 18:57:40,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:57:40,965 INFO L933 BasicCegarLoop]: 3474 mSDtfsCounter, 6235 mSDsluCounter, 4729 mSDsCounter, 0 mSdLazyCounter, 4461 mSolverCounterSat, 3958 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14436.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6840 SdHoareTripleChecker+Valid, 8203 SdHoareTripleChecker+Invalid, 8421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 65.36ms SdHoareTripleChecker+Time, 3958 IncrementalHoareTripleChecker+Valid, 4461 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16092.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:40,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6840 Valid, 8203 Invalid, 8421 Unknown, 0 Unchecked, 65.36ms Time], IncrementalHoareTripleChecker [3958 Valid, 4461 Invalid, 2 Unknown, 0 Unchecked, 16092.13ms Time] [2021-11-13 18:57:41,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68620 states. [2021-11-13 18:57:43,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68620 to 60819. [2021-11-13 18:57:43,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60819 states, 41738 states have (on average 1.3440989026786143) internal successors, (56100), 43462 states have internal predecessors, (56100), 15504 states have call successors, (15504), 3345 states have call predecessors, (15504), 3576 states have return successors, (16597), 14739 states have call predecessors, (16597), 15503 states have call successors, (16597) [2021-11-13 18:57:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60819 states to 60819 states and 88201 transitions. [2021-11-13 18:57:44,318 INFO L78 Accepts]: Start accepts. Automaton has 60819 states and 88201 transitions. Word has length 260 [2021-11-13 18:57:44,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:44,319 INFO L470 AbstractCegarLoop]: Abstraction has 60819 states and 88201 transitions. [2021-11-13 18:57:44,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 3 states have internal predecessors, (134), 2 states have call successors, (36), 6 states have call predecessors, (36), 1 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 18:57:44,319 INFO L276 IsEmpty]: Start isEmpty. Operand 60819 states and 88201 transitions. [2021-11-13 18:57:44,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-13 18:57:44,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:44,809 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:57:44,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 18:57:44,810 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:44,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:44,810 INFO L85 PathProgramCache]: Analyzing trace with hash 337576721, now seen corresponding path program 1 times [2021-11-13 18:57:44,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:44,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148234259] [2021-11-13 18:57:44,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:44,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:45,169 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:57:45,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929756844] [2021-11-13 18:57:45,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:45,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:45,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:57:45,179 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:57:45,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:57:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:46,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 5466 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:57:46,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:57:47,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 1122 trivial. 0 not checked. [2021-11-13 18:57:47,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:57:47,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:47,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148234259] [2021-11-13 18:57:47,343 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:57:47,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929756844] [2021-11-13 18:57:47,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929756844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:57:47,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:57:47,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:57:47,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129672534] [2021-11-13 18:57:47,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:57:47,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:57:47,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:47,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:57:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:57:47,346 INFO L87 Difference]: Start difference. First operand 60819 states and 88201 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-13 18:57:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:57:49,666 INFO L93 Difference]: Finished difference Result 121660 states and 176429 transitions. [2021-11-13 18:57:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:57:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) Word has length 328 [2021-11-13 18:57:49,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:57:49,980 INFO L225 Difference]: With dead ends: 121660 [2021-11-13 18:57:49,980 INFO L226 Difference]: Without dead ends: 60867 [2021-11-13 18:57:50,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:57:50,126 INFO L933 BasicCegarLoop]: 3202 mSDtfsCounter, 3 mSDsluCounter, 6397 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 9599 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.82ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.91ms IncrementalHoareTripleChecker+Time [2021-11-13 18:57:50,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 9599 Invalid, 15 Unknown, 0 Unchecked, 10.82ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 23.91ms Time] [2021-11-13 18:57:50,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60867 states. [2021-11-13 18:57:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60867 to 60851. [2021-11-13 18:57:52,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60851 states, 41770 states have (on average 1.3438352884845584) internal successors, (56132), 43494 states have internal predecessors, (56132), 15504 states have call successors, (15504), 3345 states have call predecessors, (15504), 3576 states have return successors, (16597), 14739 states have call predecessors, (16597), 15503 states have call successors, (16597) [2021-11-13 18:57:53,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60851 states to 60851 states and 88233 transitions. [2021-11-13 18:57:53,031 INFO L78 Accepts]: Start accepts. Automaton has 60851 states and 88233 transitions. Word has length 328 [2021-11-13 18:57:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:57:53,032 INFO L470 AbstractCegarLoop]: Abstraction has 60851 states and 88233 transitions. [2021-11-13 18:57:53,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (39), 2 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-13 18:57:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 60851 states and 88233 transitions. [2021-11-13 18:57:53,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-13 18:57:53,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:57:53,099 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:57:53,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:57:53,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:53,315 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:57:53,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:57:53,315 INFO L85 PathProgramCache]: Analyzing trace with hash 808933071, now seen corresponding path program 1 times [2021-11-13 18:57:53,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:57:53,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48069562] [2021-11-13 18:57:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:53,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:57:53,487 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:57:53,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915144306] [2021-11-13 18:57:53,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:57:53,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:57:53,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:57:53,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:57:53,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:57:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:57:55,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 5469 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 18:57:55,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:57:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 560 proven. 5 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2021-11-13 18:57:56,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:57:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 1126 trivial. 0 not checked. [2021-11-13 18:57:57,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:57:57,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48069562] [2021-11-13 18:57:57,794 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:57:57,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915144306] [2021-11-13 18:57:57,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915144306] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:57:57,794 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:57:57,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-13 18:57:57,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937764382] [2021-11-13 18:57:57,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:57:57,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:57:57,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:57:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:57:57,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:57:57,797 INFO L87 Difference]: Start difference. First operand 60851 states and 88233 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 5 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2021-11-13 18:57:59,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 18:58:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:58:13,733 INFO L93 Difference]: Finished difference Result 128300 states and 187465 transitions. [2021-11-13 18:58:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 18:58:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 5 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) Word has length 328 [2021-11-13 18:58:13,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:58:14,052 INFO L225 Difference]: With dead ends: 128300 [2021-11-13 18:58:14,052 INFO L226 Difference]: Without dead ends: 67251 [2021-11-13 18:58:14,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 648 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:58:14,346 INFO L933 BasicCegarLoop]: 3899 mSDtfsCounter, 4777 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 5280 mSolverCounterSat, 798 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11305.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5212 SdHoareTripleChecker+Valid, 8274 SdHoareTripleChecker+Invalid, 6079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.18ms SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 5280 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12984.74ms IncrementalHoareTripleChecker+Time [2021-11-13 18:58:14,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5212 Valid, 8274 Invalid, 6079 Unknown, 0 Unchecked, 53.18ms Time], IncrementalHoareTripleChecker [798 Valid, 5280 Invalid, 1 Unknown, 0 Unchecked, 12984.74ms Time] [2021-11-13 18:58:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67251 states. [2021-11-13 18:58:16,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67251 to 64579. [2021-11-13 18:58:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64579 states, 44138 states have (on average 1.3373510353890072) internal successors, (59028), 46038 states have internal predecessors, (59028), 16848 states have call successors, (16848), 3345 states have call predecessors, (16848), 3592 states have return successors, (17927), 16099 states have call predecessors, (17927), 16847 states have call successors, (17927) [2021-11-13 18:58:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64579 states to 64579 states and 93803 transitions. [2021-11-13 18:58:17,345 INFO L78 Accepts]: Start accepts. Automaton has 64579 states and 93803 transitions. Word has length 328 [2021-11-13 18:58:17,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:58:17,347 INFO L470 AbstractCegarLoop]: Abstraction has 64579 states and 93803 transitions. [2021-11-13 18:58:17,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 5 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 5 states have call predecessors, (39), 5 states have call successors, (39) [2021-11-13 18:58:17,347 INFO L276 IsEmpty]: Start isEmpty. Operand 64579 states and 93803 transitions. [2021-11-13 18:58:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2021-11-13 18:58:17,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:58:17,482 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:58:17,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:58:17,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 18:58:17,699 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:58:17,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:58:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2143708692, now seen corresponding path program 1 times [2021-11-13 18:58:17,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:58:17,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687851672] [2021-11-13 18:58:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:58:17,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:58:17,871 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:58:17,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2082842410] [2021-11-13 18:58:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:58:17,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:58:17,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:58:17,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:58:17,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:58:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:58:19,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 7325 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:58:19,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:58:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3159 backedges. 790 proven. 0 refuted. 0 times theorem prover too weak. 2369 trivial. 0 not checked. [2021-11-13 18:58:21,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:58:21,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:58:21,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687851672] [2021-11-13 18:58:21,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:58:21,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082842410] [2021-11-13 18:58:21,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082842410] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:58:21,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:58:21,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:58:21,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991734621] [2021-11-13 18:58:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:58:21,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:58:21,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:58:21,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:58:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:58:21,087 INFO L87 Difference]: Start difference. First operand 64579 states and 93803 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-13 18:58:23,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:58:23,642 INFO L93 Difference]: Finished difference Result 138092 states and 203313 transitions. [2021-11-13 18:58:23,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:58:23,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 680 [2021-11-13 18:58:23,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:58:23,941 INFO L225 Difference]: With dead ends: 138092 [2021-11-13 18:58:23,942 INFO L226 Difference]: Without dead ends: 73539 [2021-11-13 18:58:24,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:58:24,136 INFO L933 BasicCegarLoop]: 3265 mSDtfsCounter, 119 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 6464 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.36ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:58:24,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 6464 Invalid, 6 Unknown, 0 Unchecked, 7.36ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 8.17ms Time] [2021-11-13 18:58:24,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73539 states. [2021-11-13 18:58:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73539 to 64611. [2021-11-13 18:58:27,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64611 states, 44170 states have (on average 1.3371066334616255) internal successors, (59060), 46070 states have internal predecessors, (59060), 16848 states have call successors, (16848), 3345 states have call predecessors, (16848), 3592 states have return successors, (17927), 16099 states have call predecessors, (17927), 16847 states have call successors, (17927) [2021-11-13 18:58:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64611 states to 64611 states and 93835 transitions. [2021-11-13 18:58:28,229 INFO L78 Accepts]: Start accepts. Automaton has 64611 states and 93835 transitions. Word has length 680 [2021-11-13 18:58:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:58:28,231 INFO L470 AbstractCegarLoop]: Abstraction has 64611 states and 93835 transitions. [2021-11-13 18:58:28,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-13 18:58:28,232 INFO L276 IsEmpty]: Start isEmpty. Operand 64611 states and 93835 transitions. [2021-11-13 18:58:28,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 681 [2021-11-13 18:58:28,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:58:28,413 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:58:28,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-13 18:58:28,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 18:58:28,639 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:58:28,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:58:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1114536854, now seen corresponding path program 1 times [2021-11-13 18:58:28,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:58:28,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724192706] [2021-11-13 18:58:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:58:28,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:58:28,844 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:58:28,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315551568] [2021-11-13 18:58:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:58:28,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:58:28,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:58:28,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:58:28,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:58:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:58:30,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 7327 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 18:58:30,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:58:31,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3159 backedges. 790 proven. 0 refuted. 0 times theorem prover too weak. 2369 trivial. 0 not checked. [2021-11-13 18:58:31,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:58:31,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:58:31,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724192706] [2021-11-13 18:58:31,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:58:31,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315551568] [2021-11-13 18:58:31,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315551568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:58:31,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:58:31,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:58:31,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952170115] [2021-11-13 18:58:31,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:58:31,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:58:31,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:58:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:58:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:58:31,888 INFO L87 Difference]: Start difference. First operand 64611 states and 93835 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-13 18:58:35,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:58:35,026 INFO L93 Difference]: Finished difference Result 138348 states and 203697 transitions. [2021-11-13 18:58:35,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:58:35,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) Word has length 680 [2021-11-13 18:58:35,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:58:35,661 INFO L225 Difference]: With dead ends: 138348 [2021-11-13 18:58:35,661 INFO L226 Difference]: Without dead ends: 73763 [2021-11-13 18:58:35,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 678 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:58:35,845 INFO L933 BasicCegarLoop]: 3364 mSDtfsCounter, 123 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 6597 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.53ms IncrementalHoareTripleChecker+Time [2021-11-13 18:58:35,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 6597 Invalid, 9 Unknown, 0 Unchecked, 8.16ms Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 14.53ms Time] [2021-11-13 18:58:35,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73763 states. [2021-11-13 18:58:39,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73763 to 64771. [2021-11-13 18:58:39,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64771 states, 44298 states have (on average 1.3368549370174725) internal successors, (59220), 46198 states have internal predecessors, (59220), 16880 states have call successors, (16880), 3345 states have call predecessors, (16880), 3592 states have return successors, (17959), 16131 states have call predecessors, (17959), 16879 states have call successors, (17959) [2021-11-13 18:58:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64771 states to 64771 states and 94059 transitions. [2021-11-13 18:58:39,394 INFO L78 Accepts]: Start accepts. Automaton has 64771 states and 94059 transitions. Word has length 680 [2021-11-13 18:58:39,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:58:39,395 INFO L470 AbstractCegarLoop]: Abstraction has 64771 states and 94059 transitions. [2021-11-13 18:58:39,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 2 states have call successors, (76), 2 states have call predecessors, (76), 2 states have return successors, (75), 2 states have call predecessors, (75), 2 states have call successors, (75) [2021-11-13 18:58:39,396 INFO L276 IsEmpty]: Start isEmpty. Operand 64771 states and 94059 transitions. [2021-11-13 18:58:40,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2021-11-13 18:58:40,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:58:40,014 INFO L514 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:58:40,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-13 18:58:40,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:58:40,227 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 18:58:40,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:58:40,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1797573781, now seen corresponding path program 1 times [2021-11-13 18:58:40,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:58:40,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028906214] [2021-11-13 18:58:40,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:58:40,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:58:40,411 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:58:40,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506951198] [2021-11-13 18:58:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:58:40,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:58:40,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:58:40,413 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:58:40,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14dc5c3f-cf94-4188-ad9e-4ad19c1f4090/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:58:41,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:58:41,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 7405 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:58:41,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:58:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3261 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 2937 trivial. 0 not checked. [2021-11-13 18:58:43,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:58:43,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:58:43,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028906214] [2021-11-13 18:58:43,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:58:43,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506951198] [2021-11-13 18:58:43,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506951198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:58:43,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:58:43,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:58:43,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749914234] [2021-11-13 18:58:43,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:58:43,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:58:43,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:58:43,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:58:43,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:58:43,456 INFO L87 Difference]: Start difference. First operand 64771 states and 94059 transitions. Second operand has 5 states, 5 states have (on average 50.0) internal successors, (250), 4 states have internal predecessors, (250), 2 states have call successors, (75), 2 states have call predecessors, (75), 3 states have return successors, (74), 3 states have call predecessors, (74), 2 states have call successors, (74)