./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:35:07,160 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:35:07,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:35:07,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:35:07,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:35:07,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:35:07,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:35:07,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:35:07,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:35:07,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:35:07,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:35:07,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:35:07,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:35:07,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:35:07,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:35:07,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:35:07,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:35:07,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:35:07,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:35:07,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:35:07,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:35:07,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:35:07,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:35:07,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:35:07,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:35:07,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:35:07,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:35:07,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:35:07,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:35:07,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:35:07,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:35:07,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:35:07,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:35:07,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:35:07,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:35:07,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:35:07,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:35:07,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:35:07,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:35:07,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:35:07,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:35:07,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:35:07,241 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:35:07,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:35:07,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:35:07,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:35:07,242 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:35:07,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:35:07,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:35:07,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:35:07,243 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:35:07,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:35:07,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:35:07,245 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:35:07,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:35:07,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:35:07,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:35:07,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:35:07,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:35:07,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:35:07,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:35:07,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:35:07,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:35:07,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:35:07,246 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:35:07,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:35:07,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:35:07,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:35:07,246 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_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 195d502e207cba6e22b4d3a0f1eab4288ed491325552159482eaed582ac159e0 [2021-12-07 00:35:07,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:35:07,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:35:07,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:35:07,480 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:35:07,481 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:35:07,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2021-12-07 00:35:07,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/data/523617134/29f222d82f604d8d82f0c1c828a9e8fe/FLAG0383ff27b [2021-12-07 00:35:07,990 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:35:07,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c [2021-12-07 00:35:08,008 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/data/523617134/29f222d82f604d8d82f0c1c828a9e8fe/FLAG0383ff27b [2021-12-07 00:35:08,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/data/523617134/29f222d82f604d8d82f0c1c828a9e8fe [2021-12-07 00:35:08,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:35:08,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:35:08,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:35:08,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:35:08,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:35:08,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16675104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08, skipping insertion in model container [2021-12-07 00:35:08,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:35:08,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:35:08,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2021-12-07 00:35:08,395 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:35:08,403 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:35:08,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/sv-benchmarks/c/product-lines/email_spec27_product19.cil.c[17762,17775] [2021-12-07 00:35:08,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:35:08,492 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:35:08,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08 WrapperNode [2021-12-07 00:35:08,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:35:08,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:35:08,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:35:08,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:35:08,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,525 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,568 INFO L137 Inliner]: procedures = 127, calls = 200, calls flagged for inlining = 58, calls inlined = 53, statements flattened = 949 [2021-12-07 00:35:08,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:35:08,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:35:08,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:35:08,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:35:08,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,616 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:35:08,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:35:08,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:35:08,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:35:08,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (1/1) ... [2021-12-07 00:35:08,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:35:08,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:08,660 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:35:08,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:35:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-07 00:35:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-07 00:35:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-07 00:35:08,689 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-07 00:35:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-07 00:35:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-07 00:35:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-07 00:35:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-07 00:35:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-07 00:35:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-07 00:35:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-07 00:35:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-07 00:35:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-07 00:35:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-07 00:35:08,690 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-07 00:35:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-07 00:35:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-07 00:35:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:35:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-07 00:35:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-07 00:35:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-07 00:35:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-07 00:35:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-07 00:35:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-07 00:35:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-07 00:35:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-07 00:35:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-07 00:35:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-07 00:35:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-07 00:35:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-07 00:35:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-07 00:35:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-07 00:35:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-07 00:35:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-07 00:35:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-07 00:35:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-07 00:35:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:35:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-07 00:35:08,692 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-07 00:35:08,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:35:08,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:35:08,852 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:35:08,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:35:09,314 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:35:09,326 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:35:09,326 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:35:09,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:35:09 BoogieIcfgContainer [2021-12-07 00:35:09,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:35:09,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:35:09,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:35:09,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:35:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:35:08" (1/3) ... [2021-12-07 00:35:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ab5842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:35:09, skipping insertion in model container [2021-12-07 00:35:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:35:08" (2/3) ... [2021-12-07 00:35:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ab5842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:35:09, skipping insertion in model container [2021-12-07 00:35:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:35:09" (3/3) ... [2021-12-07 00:35:09,337 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2021-12-07 00:35:09,342 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:35:09,342 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:35:09,388 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:35:09,395 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 [2021-12-07 00:35:09,395 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:35:09,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-07 00:35:09,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-07 00:35:09,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:09,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:09,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:09,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1318613566, now seen corresponding path program 1 times [2021-12-07 00:35:09,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:09,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158173665] [2021-12-07 00:35:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:09,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:35:09,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:35:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:35:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:35:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-07 00:35:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 00:35:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:35:09,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:35:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:35:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:35:09,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:35:09,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 00:35:09,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:09,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158173665] [2021-12-07 00:35:09,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158173665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:09,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480088598] [2021-12-07 00:35:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:09,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:09,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:09,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:09,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:35:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:35:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 00:35:10,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:10,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480088598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:10,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:10,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-07 00:35:10,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586556150] [2021-12-07 00:35:10,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:10,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:35:10,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:10,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:35:10,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:35:10,220 INFO L87 Difference]: Start difference. First operand has 314 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 250 states have internal predecessors, (378), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:10,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:10,267 INFO L93 Difference]: Finished difference Result 474 states and 694 transitions. [2021-12-07 00:35:10,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:35:10,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2021-12-07 00:35:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:10,279 INFO L225 Difference]: With dead ends: 474 [2021-12-07 00:35:10,279 INFO L226 Difference]: Without dead ends: 307 [2021-12-07 00:35:10,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:35:10,286 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:10,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:35:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-12-07 00:35:10,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2021-12-07 00:35:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 242 states have (on average 1.5165289256198347) internal successors, (367), 243 states have internal predecessors, (367), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-07 00:35:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 458 transitions. [2021-12-07 00:35:10,336 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 458 transitions. Word has length 108 [2021-12-07 00:35:10,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:10,338 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 458 transitions. [2021-12-07 00:35:10,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 458 transitions. [2021-12-07 00:35:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:35:10,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:10,345 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:10,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:10,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-07 00:35:10,546 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:10,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:10,547 INFO L85 PathProgramCache]: Analyzing trace with hash -406077674, now seen corresponding path program 1 times [2021-12-07 00:35:10,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:10,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279025509] [2021-12-07 00:35:10,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:10,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:10,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:35:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:35:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:35:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-07 00:35:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:35:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 00:35:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:35:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:35:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:35:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:35:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:35:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 00:35:10,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:10,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279025509] [2021-12-07 00:35:10,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279025509] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:10,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56541068] [2021-12-07 00:35:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:10,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:10,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:10,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:10,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:35:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:35:10,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 00:35:11,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:11,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56541068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:11,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:11,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-07 00:35:11,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515262957] [2021-12-07 00:35:11,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:11,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:35:11,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:35:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:35:11,026 INFO L87 Difference]: Start difference. First operand 307 states and 458 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:11,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:11,050 INFO L93 Difference]: Finished difference Result 464 states and 675 transitions. [2021-12-07 00:35:11,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:35:11,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2021-12-07 00:35:11,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:11,054 INFO L225 Difference]: With dead ends: 464 [2021-12-07 00:35:11,054 INFO L226 Difference]: Without dead ends: 310 [2021-12-07 00:35:11,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:35:11,056 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:11,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 910 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:35:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-12-07 00:35:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2021-12-07 00:35:11,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 244 states have (on average 1.5122950819672132) internal successors, (369), 245 states have internal predecessors, (369), 46 states have call successors, (46), 18 states have call predecessors, (46), 18 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2021-12-07 00:35:11,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 460 transitions. [2021-12-07 00:35:11,076 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 460 transitions. Word has length 109 [2021-12-07 00:35:11,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:11,076 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 460 transitions. [2021-12-07 00:35:11,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:11,077 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 460 transitions. [2021-12-07 00:35:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-07 00:35:11,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:11,080 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:35:11,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:35:11,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:11,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1521216077, now seen corresponding path program 1 times [2021-12-07 00:35:11,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:11,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699673360] [2021-12-07 00:35:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:11,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:35:11,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:35:11,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:35:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-07 00:35:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-07 00:35:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:35:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:35:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:35:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:35:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:35:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:35:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:35:11,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:11,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699673360] [2021-12-07 00:35:11,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699673360] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:11,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83955590] [2021-12-07 00:35:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:11,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:11,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:11,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:35:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:11,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:35:11,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 00:35:11,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:11,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83955590] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:11,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:11,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-07 00:35:11,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923749255] [2021-12-07 00:35:11,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:11,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:35:11,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:11,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:35:11,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:35:11,758 INFO L87 Difference]: Start difference. First operand 309 states and 460 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:11,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:11,787 INFO L93 Difference]: Finished difference Result 648 states and 979 transitions. [2021-12-07 00:35:11,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:35:11,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2021-12-07 00:35:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:11,790 INFO L225 Difference]: With dead ends: 648 [2021-12-07 00:35:11,790 INFO L226 Difference]: Without dead ends: 366 [2021-12-07 00:35:11,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:35:11,792 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 107 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:11,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 885 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:35:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-12-07 00:35:11,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 358. [2021-12-07 00:35:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 282 states have (on average 1.5283687943262412) internal successors, (431), 283 states have internal predecessors, (431), 57 states have call successors, (57), 18 states have call predecessors, (57), 18 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-12-07 00:35:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 544 transitions. [2021-12-07 00:35:11,815 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 544 transitions. Word has length 115 [2021-12-07 00:35:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:11,815 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 544 transitions. [2021-12-07 00:35:11,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:11,816 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 544 transitions. [2021-12-07 00:35:11,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-07 00:35:11,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:11,819 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:35:11,840 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:35:12,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:12,021 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:12,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:12,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1805215575, now seen corresponding path program 1 times [2021-12-07 00:35:12,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:12,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711347474] [2021-12-07 00:35:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:12,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:35:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:35:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:35:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-07 00:35:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:35:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:35:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:35:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:35:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:35:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:35:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:35:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:35:12,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:12,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711347474] [2021-12-07 00:35:12,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711347474] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:12,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571372314] [2021-12-07 00:35:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:12,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:12,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:12,174 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:12,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:35:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:35:12,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:35:12,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:12,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571372314] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:12,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:12,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-07 00:35:12,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505628458] [2021-12-07 00:35:12,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:12,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:35:12,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:35:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:35:12,474 INFO L87 Difference]: Start difference. First operand 358 states and 544 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:12,534 INFO L93 Difference]: Finished difference Result 707 states and 1078 transitions. [2021-12-07 00:35:12,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:35:12,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2021-12-07 00:35:12,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:12,538 INFO L225 Difference]: With dead ends: 707 [2021-12-07 00:35:12,538 INFO L226 Difference]: Without dead ends: 360 [2021-12-07 00:35:12,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:12,540 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 125 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:12,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1652 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:35:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-12-07 00:35:12,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2021-12-07 00:35:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 283 states have (on average 1.5265017667844523) internal successors, (432), 285 states have internal predecessors, (432), 57 states have call successors, (57), 18 states have call predecessors, (57), 19 states have return successors, (58), 56 states have call predecessors, (58), 56 states have call successors, (58) [2021-12-07 00:35:12,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 547 transitions. [2021-12-07 00:35:12,558 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 547 transitions. Word has length 116 [2021-12-07 00:35:12,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:12,559 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 547 transitions. [2021-12-07 00:35:12,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 547 transitions. [2021-12-07 00:35:12,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-07 00:35:12,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:12,561 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:12,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:35:12,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:12,762 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:12,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1609367707, now seen corresponding path program 1 times [2021-12-07 00:35:12,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:12,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211150762] [2021-12-07 00:35:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:12,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-07 00:35:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:35:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-07 00:35:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-07 00:35:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:35:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:35:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:35:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:35:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:35:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:35:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:35:12,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:12,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211150762] [2021-12-07 00:35:12,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211150762] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:12,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939911371] [2021-12-07 00:35:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:12,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:12,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:12,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:12,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:35:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1088 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:35:13,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-07 00:35:13,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:35:13,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939911371] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:13,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:35:13,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-07 00:35:13,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300001807] [2021-12-07 00:35:13,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:13,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:35:13,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:13,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:35:13,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:35:13,160 INFO L87 Difference]: Start difference. First operand 360 states and 547 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:13,206 INFO L93 Difference]: Finished difference Result 709 states and 1083 transitions. [2021-12-07 00:35:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:35:13,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2021-12-07 00:35:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:13,209 INFO L225 Difference]: With dead ends: 709 [2021-12-07 00:35:13,209 INFO L226 Difference]: Without dead ends: 362 [2021-12-07 00:35:13,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:35:13,211 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 124 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:13,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1641 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:35:13,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-12-07 00:35:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-12-07 00:35:13,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-07 00:35:13,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 553 transitions. [2021-12-07 00:35:13,228 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 553 transitions. Word has length 117 [2021-12-07 00:35:13,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:13,228 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 553 transitions. [2021-12-07 00:35:13,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:13,229 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 553 transitions. [2021-12-07 00:35:13,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-07 00:35:13,230 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:13,231 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:13,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:35:13,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:13,431 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:13,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:13,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2099317041, now seen corresponding path program 1 times [2021-12-07 00:35:13,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:13,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786171814] [2021-12-07 00:35:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:13,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:35:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-07 00:35:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-07 00:35:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:35:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:35:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:35:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:35:13,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:35:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:35:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:13,565 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:35:13,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:13,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786171814] [2021-12-07 00:35:13,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786171814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:13,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:13,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:35:13,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360785052] [2021-12-07 00:35:13,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:13,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:35:13,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:35:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:35:13,567 INFO L87 Difference]: Start difference. First operand 362 states and 553 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:14,657 INFO L93 Difference]: Finished difference Result 851 states and 1298 transitions. [2021-12-07 00:35:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:35:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2021-12-07 00:35:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:14,661 INFO L225 Difference]: With dead ends: 851 [2021-12-07 00:35:14,661 INFO L226 Difference]: Without dead ends: 512 [2021-12-07 00:35:14,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:35:14,663 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 1103 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 2071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:14,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1583 Invalid, 2071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:35:14,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-07 00:35:14,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 362. [2021-12-07 00:35:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 284 states have (on average 1.5246478873239437) internal successors, (433), 287 states have internal predecessors, (433), 57 states have call successors, (57), 18 states have call predecessors, (57), 20 states have return successors, (62), 56 states have call predecessors, (62), 56 states have call successors, (62) [2021-12-07 00:35:14,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 552 transitions. [2021-12-07 00:35:14,689 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 552 transitions. Word has length 118 [2021-12-07 00:35:14,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:14,689 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 552 transitions. [2021-12-07 00:35:14,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:14,689 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 552 transitions. [2021-12-07 00:35:14,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-07 00:35:14,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:14,691 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:14,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:35:14,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:14,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2110321279, now seen corresponding path program 2 times [2021-12-07 00:35:14,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:14,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650556892] [2021-12-07 00:35:14,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:14,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:35:14,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-07 00:35:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:35:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 00:35:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:35:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:35:14,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:35:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:35:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:35:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,782 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:35:14,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:14,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650556892] [2021-12-07 00:35:14,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650556892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:14,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:14,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:35:14,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908839403] [2021-12-07 00:35:14,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:14,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:35:14,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:14,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:35:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:35:14,784 INFO L87 Difference]: Start difference. First operand 362 states and 552 transitions. Second operand has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:15,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:15,772 INFO L93 Difference]: Finished difference Result 853 states and 1301 transitions. [2021-12-07 00:35:15,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:35:15,772 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2021-12-07 00:35:15,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:15,776 INFO L225 Difference]: With dead ends: 853 [2021-12-07 00:35:15,776 INFO L226 Difference]: Without dead ends: 514 [2021-12-07 00:35:15,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:35:15,778 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1099 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:15,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1117 Valid, 1598 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-07 00:35:15,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-07 00:35:15,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2021-12-07 00:35:15,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (64), 56 states have call predecessors, (64), 56 states have call successors, (64) [2021-12-07 00:35:15,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 555 transitions. [2021-12-07 00:35:15,801 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 555 transitions. Word has length 119 [2021-12-07 00:35:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:15,801 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 555 transitions. [2021-12-07 00:35:15,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-07 00:35:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 555 transitions. [2021-12-07 00:35:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-07 00:35:15,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:15,803 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:15,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:35:15,803 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1209746602, now seen corresponding path program 1 times [2021-12-07 00:35:15,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424785081] [2021-12-07 00:35:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:15,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-07 00:35:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-07 00:35:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:35:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 00:35:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:35:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 00:35:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-07 00:35:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:35:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:35:15,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:15,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424785081] [2021-12-07 00:35:15,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424785081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:15,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:15,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:35:15,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301333722] [2021-12-07 00:35:15,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:15,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:35:15,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:35:15,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:35:15,919 INFO L87 Difference]: Start difference. First operand 364 states and 555 transitions. Second operand has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-07 00:35:17,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:17,122 INFO L93 Difference]: Finished difference Result 851 states and 1296 transitions. [2021-12-07 00:35:17,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:35:17,123 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 120 [2021-12-07 00:35:17,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:17,126 INFO L225 Difference]: With dead ends: 851 [2021-12-07 00:35:17,126 INFO L226 Difference]: Without dead ends: 514 [2021-12-07 00:35:17,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:35:17,128 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 1207 mSDsluCounter, 1543 mSDsCounter, 0 mSdLazyCounter, 3031 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 3031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:17,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 2092 Invalid, 3469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 3031 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:35:17,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-12-07 00:35:17,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 364. [2021-12-07 00:35:17,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 289 states have internal predecessors, (434), 57 states have call successors, (57), 18 states have call predecessors, (57), 21 states have return successors, (63), 56 states have call predecessors, (63), 56 states have call successors, (63) [2021-12-07 00:35:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 554 transitions. [2021-12-07 00:35:17,148 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 554 transitions. Word has length 120 [2021-12-07 00:35:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:17,149 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 554 transitions. [2021-12-07 00:35:17,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.454545454545454) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-07 00:35:17,149 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 554 transitions. [2021-12-07 00:35:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-07 00:35:17,151 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:17,151 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:17,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:35:17,151 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash -2053654144, now seen corresponding path program 2 times [2021-12-07 00:35:17,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:17,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045386624] [2021-12-07 00:35:17,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:17,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:17,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:35:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:35:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:35:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:35:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:35:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:35:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:35:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-07 00:35:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:17,263 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:35:17,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:17,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045386624] [2021-12-07 00:35:17,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045386624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:17,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:17,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:35:17,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123893284] [2021-12-07 00:35:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:17,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:35:17,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:35:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:35:17,265 INFO L87 Difference]: Start difference. First operand 364 states and 554 transitions. Second operand has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-07 00:35:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:18,530 INFO L93 Difference]: Finished difference Result 853 states and 1302 transitions. [2021-12-07 00:35:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:35:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 121 [2021-12-07 00:35:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:18,533 INFO L225 Difference]: With dead ends: 853 [2021-12-07 00:35:18,533 INFO L226 Difference]: Without dead ends: 516 [2021-12-07 00:35:18,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:35:18,535 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1211 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 3004 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 3454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 3004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:18,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1211 Valid, 2044 Invalid, 3454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 3004 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:35:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-12-07 00:35:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 366. [2021-12-07 00:35:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 286 states have (on average 1.520979020979021) internal successors, (435), 291 states have internal predecessors, (435), 57 states have call successors, (57), 18 states have call predecessors, (57), 22 states have return successors, (68), 56 states have call predecessors, (68), 56 states have call successors, (68) [2021-12-07 00:35:18,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 560 transitions. [2021-12-07 00:35:18,555 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 560 transitions. Word has length 121 [2021-12-07 00:35:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:18,555 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 560 transitions. [2021-12-07 00:35:18,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.545454545454546) internal successors, (83), 8 states have internal predecessors, (83), 4 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-07 00:35:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 560 transitions. [2021-12-07 00:35:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-07 00:35:18,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:18,557 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:18,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:35:18,557 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:18,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1957721989, now seen corresponding path program 1 times [2021-12-07 00:35:18,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:18,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17148771] [2021-12-07 00:35:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:18,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-07 00:35:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:35:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:35:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:35:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:35:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:35:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:35:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:35:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:18,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:18,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17148771] [2021-12-07 00:35:18,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17148771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:18,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002728837] [2021-12-07 00:35:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:18,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:18,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:18,640 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:18,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:35:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:18,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:35:18,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:18,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:18,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1002728837] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:35:18,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:35:18,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-07 00:35:18,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928251467] [2021-12-07 00:35:18,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:18,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:35:18,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:35:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:35:18,977 INFO L87 Difference]: Start difference. First operand 366 states and 560 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-07 00:35:20,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:20,026 INFO L93 Difference]: Finished difference Result 1022 states and 1630 transitions. [2021-12-07 00:35:20,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:35:20,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 122 [2021-12-07 00:35:20,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:20,034 INFO L225 Difference]: With dead ends: 1022 [2021-12-07 00:35:20,034 INFO L226 Difference]: Without dead ends: 868 [2021-12-07 00:35:20,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 269 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:35:20,037 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 1404 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:20,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 2067 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2008 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:35:20,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-12-07 00:35:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 694. [2021-12-07 00:35:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 550 states have (on average 1.5872727272727272) internal successors, (873), 555 states have internal predecessors, (873), 121 states have call successors, (121), 18 states have call predecessors, (121), 22 states have return successors, (142), 120 states have call predecessors, (142), 120 states have call successors, (142) [2021-12-07 00:35:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1136 transitions. [2021-12-07 00:35:20,084 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1136 transitions. Word has length 122 [2021-12-07 00:35:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:20,084 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 1136 transitions. [2021-12-07 00:35:20,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 7 states have internal predecessors, (118), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-07 00:35:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1136 transitions. [2021-12-07 00:35:20,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-07 00:35:20,088 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:20,088 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:20,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:35:20,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:35:20,290 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:20,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -221417816, now seen corresponding path program 1 times [2021-12-07 00:35:20,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:20,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142872575] [2021-12-07 00:35:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:20,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 00:35:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 00:35:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:35:20,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:35:20,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:35:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:35:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:35:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:35:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:20,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:20,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142872575] [2021-12-07 00:35:20,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142872575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:20,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:20,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:20,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490137281] [2021-12-07 00:35:20,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:20,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:20,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:20,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:20,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:20,405 INFO L87 Difference]: Start difference. First operand 694 states and 1136 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:21,105 INFO L93 Difference]: Finished difference Result 1803 states and 3001 transitions. [2021-12-07 00:35:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:21,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 128 [2021-12-07 00:35:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:21,113 INFO L225 Difference]: With dead ends: 1803 [2021-12-07 00:35:21,113 INFO L226 Difference]: Without dead ends: 1177 [2021-12-07 00:35:21,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:21,116 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 1098 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:21,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1114 Valid, 1347 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:21,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-12-07 00:35:21,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1019. [2021-12-07 00:35:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 811 states have (on average 1.6004932182490752) internal successors, (1298), 816 states have internal predecessors, (1298), 185 states have call successors, (185), 18 states have call predecessors, (185), 22 states have return successors, (216), 184 states have call predecessors, (216), 184 states have call successors, (216) [2021-12-07 00:35:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1699 transitions. [2021-12-07 00:35:21,173 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1699 transitions. Word has length 128 [2021-12-07 00:35:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:21,174 INFO L470 AbstractCegarLoop]: Abstraction has 1019 states and 1699 transitions. [2021-12-07 00:35:21,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:21,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1699 transitions. [2021-12-07 00:35:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-12-07 00:35:21,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:21,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:21,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:35:21,179 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash -928584161, now seen corresponding path program 1 times [2021-12-07 00:35:21,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:21,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618586381] [2021-12-07 00:35:21,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:21,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:21,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 00:35:21,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:35:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:35:21,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:35:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:35:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:35:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:35:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:35:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:21,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:21,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618586381] [2021-12-07 00:35:21,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618586381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:21,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:21,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:21,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823369625] [2021-12-07 00:35:21,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:21,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:21,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:21,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:21,255 INFO L87 Difference]: Start difference. First operand 1019 states and 1699 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:22,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:22,007 INFO L93 Difference]: Finished difference Result 2583 states and 4350 transitions. [2021-12-07 00:35:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:22,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 129 [2021-12-07 00:35:22,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:22,016 INFO L225 Difference]: With dead ends: 2583 [2021-12-07 00:35:22,017 INFO L226 Difference]: Without dead ends: 1685 [2021-12-07 00:35:22,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:22,020 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1104 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:22,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 1298 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:22,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2021-12-07 00:35:22,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1527. [2021-12-07 00:35:22,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1224 states have (on average 1.6086601307189543) internal successors, (1969), 1229 states have internal predecessors, (1969), 280 states have call successors, (280), 18 states have call predecessors, (280), 22 states have return successors, (311), 279 states have call predecessors, (311), 279 states have call successors, (311) [2021-12-07 00:35:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2560 transitions. [2021-12-07 00:35:22,104 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2560 transitions. Word has length 129 [2021-12-07 00:35:22,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:22,105 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 2560 transitions. [2021-12-07 00:35:22,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:22,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2560 transitions. [2021-12-07 00:35:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-07 00:35:22,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:22,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:22,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:35:22,113 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:22,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1352544666, now seen corresponding path program 1 times [2021-12-07 00:35:22,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:22,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638641542] [2021-12-07 00:35:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:22,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:22,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:35:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:35:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:35:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:35:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:35:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:35:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:35:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:35:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:22,191 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:22,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638641542] [2021-12-07 00:35:22,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638641542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:22,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:22,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:22,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585740546] [2021-12-07 00:35:22,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:22,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:22,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:22,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:22,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:22,192 INFO L87 Difference]: Start difference. First operand 1527 states and 2560 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:22,921 INFO L93 Difference]: Finished difference Result 3735 states and 6359 transitions. [2021-12-07 00:35:22,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:22,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-07 00:35:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:22,933 INFO L225 Difference]: With dead ends: 3735 [2021-12-07 00:35:22,933 INFO L226 Difference]: Without dead ends: 2454 [2021-12-07 00:35:22,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:22,937 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 1085 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:22,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1326 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-12-07 00:35:23,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2296. [2021-12-07 00:35:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 1870 states have (on average 1.6149732620320856) internal successors, (3020), 1875 states have internal predecessors, (3020), 403 states have call successors, (403), 18 states have call predecessors, (403), 22 states have return successors, (450), 402 states have call predecessors, (450), 402 states have call successors, (450) [2021-12-07 00:35:23,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3873 transitions. [2021-12-07 00:35:23,033 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3873 transitions. Word has length 130 [2021-12-07 00:35:23,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:23,033 INFO L470 AbstractCegarLoop]: Abstraction has 2296 states and 3873 transitions. [2021-12-07 00:35:23,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:23,033 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3873 transitions. [2021-12-07 00:35:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-07 00:35:23,042 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:23,042 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:23,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:35:23,042 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1387209282, now seen corresponding path program 1 times [2021-12-07 00:35:23,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:23,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903398553] [2021-12-07 00:35:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:23,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 00:35:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:35:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:35:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:35:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:35:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:35:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-07 00:35:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:35:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:23,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:23,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:23,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903398553] [2021-12-07 00:35:23,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903398553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:23,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:23,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:23,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575344436] [2021-12-07 00:35:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:23,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:23,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:23,125 INFO L87 Difference]: Start difference. First operand 2296 states and 3873 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:23,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:23,938 INFO L93 Difference]: Finished difference Result 5529 states and 9493 transitions. [2021-12-07 00:35:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:23,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-07 00:35:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:23,957 INFO L225 Difference]: With dead ends: 5529 [2021-12-07 00:35:23,958 INFO L226 Difference]: Without dead ends: 3683 [2021-12-07 00:35:23,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:23,963 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1094 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:23,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 1307 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:23,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2021-12-07 00:35:24,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3525. [2021-12-07 00:35:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 2920 states have (on average 1.6188356164383562) internal successors, (4727), 2925 states have internal predecessors, (4727), 582 states have call successors, (582), 18 states have call predecessors, (582), 22 states have return successors, (655), 581 states have call predecessors, (655), 581 states have call successors, (655) [2021-12-07 00:35:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 5964 transitions. [2021-12-07 00:35:24,139 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 5964 transitions. Word has length 131 [2021-12-07 00:35:24,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:24,140 INFO L470 AbstractCegarLoop]: Abstraction has 3525 states and 5964 transitions. [2021-12-07 00:35:24,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:24,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 5964 transitions. [2021-12-07 00:35:24,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-07 00:35:24,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:24,150 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:24,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:35:24,150 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:24,150 INFO L85 PathProgramCache]: Analyzing trace with hash 913454026, now seen corresponding path program 1 times [2021-12-07 00:35:24,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:24,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878725281] [2021-12-07 00:35:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:24,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 00:35:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:35:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:35:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:35:24,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:35:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:35:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-07 00:35:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:35:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:24,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:24,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878725281] [2021-12-07 00:35:24,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878725281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:24,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:24,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:24,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877560799] [2021-12-07 00:35:24,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:24,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:24,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:24,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:24,229 INFO L87 Difference]: Start difference. First operand 3525 states and 5964 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:25,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:25,101 INFO L93 Difference]: Finished difference Result 8477 states and 14640 transitions. [2021-12-07 00:35:25,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:25,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 132 [2021-12-07 00:35:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:25,132 INFO L225 Difference]: With dead ends: 8477 [2021-12-07 00:35:25,132 INFO L226 Difference]: Without dead ends: 5714 [2021-12-07 00:35:25,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:25,139 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1083 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:25,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1098 Valid, 1349 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5714 states. [2021-12-07 00:35:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5556. [2021-12-07 00:35:25,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4575 states have (on average 1.6128961748633879) internal successors, (7379), 4580 states have internal predecessors, (7379), 958 states have call successors, (958), 18 states have call predecessors, (958), 22 states have return successors, (1075), 957 states have call predecessors, (1075), 957 states have call successors, (1075) [2021-12-07 00:35:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 9412 transitions. [2021-12-07 00:35:25,417 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 9412 transitions. Word has length 132 [2021-12-07 00:35:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:25,417 INFO L470 AbstractCegarLoop]: Abstraction has 5556 states and 9412 transitions. [2021-12-07 00:35:25,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 9412 transitions. [2021-12-07 00:35:25,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-07 00:35:25,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:25,432 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:25,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:35:25,432 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2099398746, now seen corresponding path program 1 times [2021-12-07 00:35:25,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:25,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072862753] [2021-12-07 00:35:25,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:25,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 00:35:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:35:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:35:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 00:35:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:35:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:35:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-07 00:35:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-07 00:35:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:25,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:25,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072862753] [2021-12-07 00:35:25,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072862753] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:25,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:25,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:25,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064069024] [2021-12-07 00:35:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:25,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:25,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:25,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:25,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:25,509 INFO L87 Difference]: Start difference. First operand 5556 states and 9412 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:26,587 INFO L93 Difference]: Finished difference Result 13814 states and 23861 transitions. [2021-12-07 00:35:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-07 00:35:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:26,633 INFO L225 Difference]: With dead ends: 13814 [2021-12-07 00:35:26,633 INFO L226 Difference]: Without dead ends: 9397 [2021-12-07 00:35:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:26,645 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1085 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 459 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 459 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:26,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 1313 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [459 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9397 states. [2021-12-07 00:35:27,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9397 to 9239. [2021-12-07 00:35:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 7652 states have (on average 1.6106900156821746) internal successors, (12325), 7657 states have internal predecessors, (12325), 1564 states have call successors, (1564), 18 states have call predecessors, (1564), 22 states have return successors, (1759), 1563 states have call predecessors, (1759), 1563 states have call successors, (1759) [2021-12-07 00:35:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 15648 transitions. [2021-12-07 00:35:27,098 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 15648 transitions. Word has length 133 [2021-12-07 00:35:27,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:27,098 INFO L470 AbstractCegarLoop]: Abstraction has 9239 states and 15648 transitions. [2021-12-07 00:35:27,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:27,098 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 15648 transitions. [2021-12-07 00:35:27,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-07 00:35:27,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:27,120 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:27,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:35:27,121 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:27,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1620420932, now seen corresponding path program 1 times [2021-12-07 00:35:27,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:27,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907821694] [2021-12-07 00:35:27,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:27,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:35:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 00:35:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:35:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:35:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-07 00:35:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-07 00:35:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:35:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:35:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:27,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:27,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907821694] [2021-12-07 00:35:27,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907821694] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:27,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:27,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:27,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481325983] [2021-12-07 00:35:27,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:27,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:27,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:27,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:27,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:27,197 INFO L87 Difference]: Start difference. First operand 9239 states and 15648 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:28,390 INFO L93 Difference]: Finished difference Result 23998 states and 41407 transitions. [2021-12-07 00:35:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:28,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 134 [2021-12-07 00:35:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:28,434 INFO L225 Difference]: With dead ends: 23998 [2021-12-07 00:35:28,434 INFO L226 Difference]: Without dead ends: 16350 [2021-12-07 00:35:28,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:28,453 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 1088 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:28,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 1341 Invalid, 1337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16350 states. [2021-12-07 00:35:29,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16350 to 16192. [2021-12-07 00:35:29,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16192 states, 13402 states have (on average 1.601775854350097) internal successors, (21467), 13407 states have internal predecessors, (21467), 2767 states have call successors, (2767), 18 states have call predecessors, (2767), 22 states have return successors, (3106), 2766 states have call predecessors, (3106), 2766 states have call successors, (3106) [2021-12-07 00:35:29,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16192 states to 16192 states and 27340 transitions. [2021-12-07 00:35:29,171 INFO L78 Accepts]: Start accepts. Automaton has 16192 states and 27340 transitions. Word has length 134 [2021-12-07 00:35:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:29,171 INFO L470 AbstractCegarLoop]: Abstraction has 16192 states and 27340 transitions. [2021-12-07 00:35:29,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 16192 states and 27340 transitions. [2021-12-07 00:35:29,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-07 00:35:29,197 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:29,197 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:29,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:35:29,197 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:29,198 INFO L85 PathProgramCache]: Analyzing trace with hash -71748903, now seen corresponding path program 1 times [2021-12-07 00:35:29,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:29,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016781587] [2021-12-07 00:35:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:29,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:35:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:35:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:35:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:35:29,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:35:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:35:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:35:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:35:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:29,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:29,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016781587] [2021-12-07 00:35:29,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016781587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:29,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:29,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:29,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230509061] [2021-12-07 00:35:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:29,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:29,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:29,276 INFO L87 Difference]: Start difference. First operand 16192 states and 27340 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:30,973 INFO L93 Difference]: Finished difference Result 42964 states and 74006 transitions. [2021-12-07 00:35:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:30,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-07 00:35:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:31,060 INFO L225 Difference]: With dead ends: 42964 [2021-12-07 00:35:31,060 INFO L226 Difference]: Without dead ends: 29005 [2021-12-07 00:35:31,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:31,091 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1085 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 446 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:31,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1101 Valid, 1303 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [446 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:31,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29005 states. [2021-12-07 00:35:32,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29005 to 28847. [2021-12-07 00:35:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28847 states, 24018 states have (on average 1.5975934715629945) internal successors, (38371), 24023 states have internal predecessors, (38371), 4806 states have call successors, (4806), 18 states have call predecessors, (4806), 22 states have return successors, (5419), 4805 states have call predecessors, (5419), 4805 states have call successors, (5419) [2021-12-07 00:35:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28847 states to 28847 states and 48596 transitions. [2021-12-07 00:35:32,290 INFO L78 Accepts]: Start accepts. Automaton has 28847 states and 48596 transitions. Word has length 135 [2021-12-07 00:35:32,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:32,290 INFO L470 AbstractCegarLoop]: Abstraction has 28847 states and 48596 transitions. [2021-12-07 00:35:32,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:32,290 INFO L276 IsEmpty]: Start isEmpty. Operand 28847 states and 48596 transitions. [2021-12-07 00:35:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-07 00:35:32,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:32,312 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:32,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:35:32,312 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:32,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:32,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1737476538, now seen corresponding path program 1 times [2021-12-07 00:35:32,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:32,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464134242] [2021-12-07 00:35:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:32,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:35:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:35:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:35:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:35:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:35:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:35:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:35:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:35:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:32,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:32,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464134242] [2021-12-07 00:35:32,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464134242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:32,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:32,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:32,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867976619] [2021-12-07 00:35:32,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:32,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:32,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:32,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:32,381 INFO L87 Difference]: Start difference. First operand 28847 states and 48596 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:34,863 INFO L93 Difference]: Finished difference Result 78726 states and 134765 transitions. [2021-12-07 00:35:34,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:34,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 136 [2021-12-07 00:35:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:34,994 INFO L225 Difference]: With dead ends: 78726 [2021-12-07 00:35:34,994 INFO L226 Difference]: Without dead ends: 52884 [2021-12-07 00:35:35,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:35,035 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1078 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:35,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 1323 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:35,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52884 states. [2021-12-07 00:35:37,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52884 to 52726. [2021-12-07 00:35:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52726 states, 44182 states have (on average 1.5920510615182653) internal successors, (70340), 44187 states have internal predecessors, (70340), 8521 states have call successors, (8521), 18 states have call predecessors, (8521), 22 states have return successors, (9666), 8520 states have call predecessors, (9666), 8520 states have call successors, (9666) [2021-12-07 00:35:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52726 states to 52726 states and 88527 transitions. [2021-12-07 00:35:37,428 INFO L78 Accepts]: Start accepts. Automaton has 52726 states and 88527 transitions. Word has length 136 [2021-12-07 00:35:37,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:37,428 INFO L470 AbstractCegarLoop]: Abstraction has 52726 states and 88527 transitions. [2021-12-07 00:35:37,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:37,428 INFO L276 IsEmpty]: Start isEmpty. Operand 52726 states and 88527 transitions. [2021-12-07 00:35:37,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-07 00:35:37,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:37,465 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:37,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:35:37,465 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:37,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:37,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1452520601, now seen corresponding path program 1 times [2021-12-07 00:35:37,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:37,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68985421] [2021-12-07 00:35:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:37,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:35:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:35:37,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:35:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:35:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:35:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:35:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:35:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:35:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:37,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:37,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68985421] [2021-12-07 00:35:37,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68985421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:37,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:37,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:37,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026615252] [2021-12-07 00:35:37,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:37,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:37,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:37,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:37,547 INFO L87 Difference]: Start difference. First operand 52726 states and 88527 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:41,151 INFO L93 Difference]: Finished difference Result 98497 states and 168952 transitions. [2021-12-07 00:35:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:41,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-07 00:35:41,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:41,434 INFO L225 Difference]: With dead ends: 98497 [2021-12-07 00:35:41,434 INFO L226 Difference]: Without dead ends: 98343 [2021-12-07 00:35:41,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:41,473 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 1081 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:41,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1096 Valid, 1311 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:41,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98343 states. [2021-12-07 00:35:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98343 to 98185. [2021-12-07 00:35:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850655464619396) internal successors, (131310), 82847 states have internal predecessors, (131310), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2021-12-07 00:35:46,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164141 transitions. [2021-12-07 00:35:46,003 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164141 transitions. Word has length 137 [2021-12-07 00:35:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:46,004 INFO L470 AbstractCegarLoop]: Abstraction has 98185 states and 164141 transitions. [2021-12-07 00:35:46,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:46,004 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164141 transitions. [2021-12-07 00:35:46,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-07 00:35:46,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:46,038 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:46,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:35:46,038 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:46,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:46,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1217673285, now seen corresponding path program 1 times [2021-12-07 00:35:46,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:46,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916492727] [2021-12-07 00:35:46,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:46,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:46,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:35:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:35:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:35:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:35:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:35:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-07 00:35:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:35:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:35:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:46,122 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:46,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:46,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916492727] [2021-12-07 00:35:46,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916492727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:46,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:46,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 00:35:46,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198904206] [2021-12-07 00:35:46,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:46,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:35:46,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:35:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:35:46,124 INFO L87 Difference]: Start difference. First operand 98185 states and 164141 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:50,336 INFO L93 Difference]: Finished difference Result 98481 states and 167841 transitions. [2021-12-07 00:35:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:35:50,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 138 [2021-12-07 00:35:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:50,633 INFO L225 Difference]: With dead ends: 98481 [2021-12-07 00:35:50,633 INFO L226 Difference]: Without dead ends: 98335 [2021-12-07 00:35:50,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:35:50,675 INFO L933 BasicCegarLoop]: 563 mSDtfsCounter, 1298 mSDsluCounter, 1346 mSDsCounter, 0 mSdLazyCounter, 2291 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1909 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:50,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 1909 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2291 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:35:50,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98335 states. [2021-12-07 00:35:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98335 to 98185. [2021-12-07 00:35:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98185 states, 82842 states have (on average 1.5850534752903116) internal successors, (131309), 82847 states have internal predecessors, (131309), 15320 states have call successors, (15320), 18 states have call predecessors, (15320), 22 states have return successors, (17511), 15319 states have call predecessors, (17511), 15319 states have call successors, (17511) [2021-12-07 00:35:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98185 states to 98185 states and 164140 transitions. [2021-12-07 00:35:55,426 INFO L78 Accepts]: Start accepts. Automaton has 98185 states and 164140 transitions. Word has length 138 [2021-12-07 00:35:55,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:55,427 INFO L470 AbstractCegarLoop]: Abstraction has 98185 states and 164140 transitions. [2021-12-07 00:35:55,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-07 00:35:55,427 INFO L276 IsEmpty]: Start isEmpty. Operand 98185 states and 164140 transitions. [2021-12-07 00:35:55,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-07 00:35:55,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:55,468 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:35:55,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-07 00:35:55,468 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:55,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1770088573, now seen corresponding path program 1 times [2021-12-07 00:35:55,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:55,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859123004] [2021-12-07 00:35:55,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:55,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:55,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:35:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:35:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:35:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:35:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:35:55,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:35:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:35:55,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:35:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:35:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:35:55,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:55,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859123004] [2021-12-07 00:35:55,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859123004] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:55,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:55,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:35:55,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412848504] [2021-12-07 00:35:55,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:55,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:35:55,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:55,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:35:55,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:35:55,569 INFO L87 Difference]: Start difference. First operand 98185 states and 164140 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-07 00:36:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:00,904 INFO L93 Difference]: Finished difference Result 99021 states and 168625 transitions. [2021-12-07 00:36:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 00:36:00,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2021-12-07 00:36:00,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:01,191 INFO L225 Difference]: With dead ends: 99021 [2021-12-07 00:36:01,192 INFO L226 Difference]: Without dead ends: 98875 [2021-12-07 00:36:01,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2021-12-07 00:36:01,230 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 2100 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 2986 mSolverCounterSat, 1094 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 4080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1094 IncrementalHoareTripleChecker+Valid, 2986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:01,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2114 Valid, 1951 Invalid, 4080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1094 Valid, 2986 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-07 00:36:01,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98875 states. [2021-12-07 00:36:05,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98875 to 98333. [2021-12-07 00:36:05,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98333 states, 82960 states have (on average 1.584811957569913) internal successors, (131476), 82965 states have internal predecessors, (131476), 15338 states have call successors, (15338), 28 states have call predecessors, (15338), 34 states have return successors, (17532), 15339 states have call predecessors, (17532), 15336 states have call successors, (17532) [2021-12-07 00:36:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98333 states to 98333 states and 164346 transitions. [2021-12-07 00:36:05,701 INFO L78 Accepts]: Start accepts. Automaton has 98333 states and 164346 transitions. Word has length 145 [2021-12-07 00:36:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:05,701 INFO L470 AbstractCegarLoop]: Abstraction has 98333 states and 164346 transitions. [2021-12-07 00:36:05,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-07 00:36:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 98333 states and 164346 transitions. [2021-12-07 00:36:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-07 00:36:05,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:05,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:36:05,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-07 00:36:05,747 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1606633112, now seen corresponding path program 1 times [2021-12-07 00:36:05,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:05,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971238257] [2021-12-07 00:36:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:05,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:36:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:36:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:36:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:36:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:36:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:36:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:36:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:36:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:36:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 00:36:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:36:05,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:05,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971238257] [2021-12-07 00:36:05,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971238257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:05,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:05,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-07 00:36:05,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951711592] [2021-12-07 00:36:05,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:05,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 00:36:05,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 00:36:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:36:05,878 INFO L87 Difference]: Start difference. First operand 98333 states and 164346 transitions. Second operand has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-07 00:36:11,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:11,442 INFO L93 Difference]: Finished difference Result 99263 states and 168960 transitions. [2021-12-07 00:36:11,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-07 00:36:11,443 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 146 [2021-12-07 00:36:11,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:11,778 INFO L225 Difference]: With dead ends: 99263 [2021-12-07 00:36:11,778 INFO L226 Difference]: Without dead ends: 98713 [2021-12-07 00:36:11,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=453, Invalid=1899, Unknown=0, NotChecked=0, Total=2352 [2021-12-07 00:36:11,821 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 1837 mSDsluCounter, 3215 mSDsCounter, 0 mSdLazyCounter, 5785 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 6692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 5785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:11,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1837 Valid, 3856 Invalid, 6692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 5785 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:36:11,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98713 states. [2021-12-07 00:36:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98713 to 98388. [2021-12-07 00:36:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98388 states, 83002 states have (on average 1.5847088021975375) internal successors, (131534), 83010 states have internal predecessors, (131534), 15349 states have call successors, (15349), 29 states have call predecessors, (15349), 36 states have return successors, (17545), 15348 states have call predecessors, (17545), 15347 states have call successors, (17545) [2021-12-07 00:36:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98388 states to 98388 states and 164428 transitions. [2021-12-07 00:36:16,559 INFO L78 Accepts]: Start accepts. Automaton has 98388 states and 164428 transitions. Word has length 146 [2021-12-07 00:36:16,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:16,559 INFO L470 AbstractCegarLoop]: Abstraction has 98388 states and 164428 transitions. [2021-12-07 00:36:16,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.733333333333333) internal successors, (101), 12 states have internal predecessors, (101), 8 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-07 00:36:16,559 INFO L276 IsEmpty]: Start isEmpty. Operand 98388 states and 164428 transitions. [2021-12-07 00:36:16,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-07 00:36:16,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:16,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:36:16,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-07 00:36:16,655 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:16,655 INFO L85 PathProgramCache]: Analyzing trace with hash -5833469, now seen corresponding path program 1 times [2021-12-07 00:36:16,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:16,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526271111] [2021-12-07 00:36:16,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:16,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:36:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:36:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:16,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:16,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:36:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:36:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:36:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:36:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:36:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:36:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:36:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:36:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:36:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-07 00:36:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-07 00:36:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-07 00:36:16,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:16,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526271111] [2021-12-07 00:36:16,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526271111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:16,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:16,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:36:16,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66099406] [2021-12-07 00:36:16,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:16,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:36:16,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:36:16,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:36:16,770 INFO L87 Difference]: Start difference. First operand 98388 states and 164428 transitions. Second operand has 10 states, 10 states have (on average 11.2) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-07 00:36:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:22,520 INFO L93 Difference]: Finished difference Result 100029 states and 170103 transitions. [2021-12-07 00:36:22,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 00:36:22,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2021-12-07 00:36:22,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:22,807 INFO L225 Difference]: With dead ends: 100029 [2021-12-07 00:36:22,808 INFO L226 Difference]: Without dead ends: 99707 [2021-12-07 00:36:22,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=254, Invalid=738, Unknown=0, NotChecked=0, Total=992 [2021-12-07 00:36:22,843 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 1730 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 3534 mSolverCounterSat, 1104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 4638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1104 IncrementalHoareTripleChecker+Valid, 3534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:22,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 2198 Invalid, 4638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1104 Valid, 3534 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-07 00:36:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99707 states. [2021-12-07 00:36:27,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99707 to 98735. [2021-12-07 00:36:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98735 states, 83275 states have (on average 1.5840888622035425) internal successors, (131915), 83287 states have internal predecessors, (131915), 15396 states have call successors, (15396), 49 states have call predecessors, (15396), 63 states have return successors, (17603), 15398 states have call predecessors, (17603), 15392 states have call successors, (17603) [2021-12-07 00:36:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98735 states to 98735 states and 164914 transitions. [2021-12-07 00:36:27,500 INFO L78 Accepts]: Start accepts. Automaton has 98735 states and 164914 transitions. Word has length 170 [2021-12-07 00:36:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:27,500 INFO L470 AbstractCegarLoop]: Abstraction has 98735 states and 164914 transitions. [2021-12-07 00:36:27,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.2) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-07 00:36:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 98735 states and 164914 transitions. [2021-12-07 00:36:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-07 00:36:27,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:27,598 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:36:27,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-07 00:36:27,598 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:27,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1417666847, now seen corresponding path program 1 times [2021-12-07 00:36:27,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:27,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584584840] [2021-12-07 00:36:27,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:27,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:36:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:36:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:36:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:36:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:36:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:36:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:36:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:36:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:36:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:36:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 00:36:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-07 00:36:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-07 00:36:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-07 00:36:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-07 00:36:27,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:27,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584584840] [2021-12-07 00:36:27,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584584840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:27,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:27,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-07 00:36:27,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692371468] [2021-12-07 00:36:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:27,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:36:27,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:36:27,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:36:27,729 INFO L87 Difference]: Start difference. First operand 98735 states and 164914 transitions. Second operand has 16 states, 15 states have (on average 7.533333333333333) internal successors, (113), 11 states have internal predecessors, (113), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-12-07 00:36:33,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:33,198 INFO L93 Difference]: Finished difference Result 99727 states and 169638 transitions. [2021-12-07 00:36:33,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-07 00:36:33,199 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.533333333333333) internal successors, (113), 11 states have internal predecessors, (113), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 171 [2021-12-07 00:36:33,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:33,486 INFO L225 Difference]: With dead ends: 99727 [2021-12-07 00:36:33,486 INFO L226 Difference]: Without dead ends: 99073 [2021-12-07 00:36:33,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=375, Invalid=1605, Unknown=0, NotChecked=0, Total=1980 [2021-12-07 00:36:33,523 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1644 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 4092 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 3370 SdHoareTripleChecker+Invalid, 4838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 4092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:33,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 3370 Invalid, 4838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 4092 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-07 00:36:33,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99073 states. [2021-12-07 00:36:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99073 to 98595. [2021-12-07 00:36:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98595 states, 83164 states have (on average 1.5843514020489635) internal successors, (131761), 83178 states have internal predecessors, (131761), 15375 states have call successors, (15375), 42 states have call predecessors, (15375), 55 states have return successors, (17580), 15374 states have call predecessors, (17580), 15372 states have call successors, (17580) [2021-12-07 00:36:38,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98595 states to 98595 states and 164716 transitions. [2021-12-07 00:36:38,273 INFO L78 Accepts]: Start accepts. Automaton has 98595 states and 164716 transitions. Word has length 171 [2021-12-07 00:36:38,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:38,273 INFO L470 AbstractCegarLoop]: Abstraction has 98595 states and 164716 transitions. [2021-12-07 00:36:38,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.533333333333333) internal successors, (113), 11 states have internal predecessors, (113), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2021-12-07 00:36:38,274 INFO L276 IsEmpty]: Start isEmpty. Operand 98595 states and 164716 transitions. [2021-12-07 00:36:38,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-07 00:36:38,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:38,380 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:36:38,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-07 00:36:38,380 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:38,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1611493383, now seen corresponding path program 1 times [2021-12-07 00:36:38,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:38,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493412253] [2021-12-07 00:36:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:38,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:36:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:36:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:36:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:36:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:36:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:36:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:36:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:36:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:36:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:36:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:36:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 00:36:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-07 00:36:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-07 00:36:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,555 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-07 00:36:38,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:38,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493412253] [2021-12-07 00:36:38,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493412253] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:38,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621591381] [2021-12-07 00:36:38,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:38,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:38,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:38,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:38,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:36:38,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:38,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-07 00:36:38,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:36:38,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:36:38,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621591381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:38,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:36:38,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2021-12-07 00:36:38,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449321956] [2021-12-07 00:36:38,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:38,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:36:38,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:36:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=857, Unknown=0, NotChecked=0, Total=930 [2021-12-07 00:36:38,992 INFO L87 Difference]: Start difference. First operand 98595 states and 164716 transitions. Second operand has 13 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2021-12-07 00:36:43,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:43,110 INFO L93 Difference]: Finished difference Result 99935 states and 166622 transitions. [2021-12-07 00:36:43,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-07 00:36:43,111 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) Word has length 174 [2021-12-07 00:36:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:43,391 INFO L225 Difference]: With dead ends: 99935 [2021-12-07 00:36:43,391 INFO L226 Difference]: Without dead ends: 99533 [2021-12-07 00:36:43,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-12-07 00:36:43,428 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 877 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 5639 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:43,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 5639 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:36:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99533 states. [2021-12-07 00:36:48,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99533 to 99332. [2021-12-07 00:36:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99332 states, 83731 states have (on average 1.5827949027242) internal successors, (132529), 83763 states have internal predecessors, (132529), 15491 states have call successors, (15491), 75 states have call predecessors, (15491), 109 states have return successors, (17750), 15493 states have call predecessors, (17750), 15485 states have call successors, (17750) [2021-12-07 00:36:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99332 states to 99332 states and 165770 transitions. [2021-12-07 00:36:48,616 INFO L78 Accepts]: Start accepts. Automaton has 99332 states and 165770 transitions. Word has length 174 [2021-12-07 00:36:48,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:48,617 INFO L470 AbstractCegarLoop]: Abstraction has 99332 states and 165770 transitions. [2021-12-07 00:36:48,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.833333333333334) internal successors, (130), 11 states have internal predecessors, (130), 6 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (18), 7 states have call predecessors, (18), 6 states have call successors, (18) [2021-12-07 00:36:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 99332 states and 165770 transitions. [2021-12-07 00:36:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-07 00:36:48,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:48,731 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:36:48,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:36:48,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-07 00:36:48,933 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:48,934 INFO L85 PathProgramCache]: Analyzing trace with hash -534120444, now seen corresponding path program 1 times [2021-12-07 00:36:48,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969505660] [2021-12-07 00:36:48,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:48,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:48,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:48,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:36:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:36:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:36:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:36:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:36:49,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:36:49,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:36:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:36:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:36:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:36:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:36:49,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:36:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 00:36:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:36:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-07 00:36:49,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:49,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969505660] [2021-12-07 00:36:49,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969505660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:49,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:36:49,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:36:49,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449622778] [2021-12-07 00:36:49,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:49,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:36:49,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:49,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:36:49,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:36:49,039 INFO L87 Difference]: Start difference. First operand 99332 states and 165770 transitions. Second operand has 9 states, 8 states have (on average 14.625) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-07 00:36:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:53,820 INFO L93 Difference]: Finished difference Result 100606 states and 170906 transitions. [2021-12-07 00:36:53,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:36:53,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 175 [2021-12-07 00:36:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:54,144 INFO L225 Difference]: With dead ends: 100606 [2021-12-07 00:36:54,144 INFO L226 Difference]: Without dead ends: 100036 [2021-12-07 00:36:54,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:36:54,191 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 969 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:54,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1758 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:36:54,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100036 states. [2021-12-07 00:36:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100036 to 99057. [2021-12-07 00:36:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99057 states, 83516 states have (on average 1.5834690358733656) internal successors, (132245), 83539 states have internal predecessors, (132245), 15442 states have call successors, (15442), 72 states have call predecessors, (15442), 98 states have return successors, (17672), 15445 states have call predecessors, (17672), 15436 states have call successors, (17672) [2021-12-07 00:36:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99057 states to 99057 states and 165359 transitions. [2021-12-07 00:36:59,222 INFO L78 Accepts]: Start accepts. Automaton has 99057 states and 165359 transitions. Word has length 175 [2021-12-07 00:36:59,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:59,222 INFO L470 AbstractCegarLoop]: Abstraction has 99057 states and 165359 transitions. [2021-12-07 00:36:59,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.625) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-07 00:36:59,223 INFO L276 IsEmpty]: Start isEmpty. Operand 99057 states and 165359 transitions. [2021-12-07 00:36:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-07 00:36:59,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:59,335 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:36:59,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-07 00:36:59,336 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:59,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:59,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1135375607, now seen corresponding path program 1 times [2021-12-07 00:36:59,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:59,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203402446] [2021-12-07 00:36:59,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:59,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:36:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:36:59,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:36:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:36:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:36:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:36:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:36:59,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:36:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:36:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:36:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:36:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:36:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-07 00:36:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-07 00:36:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,492 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-07 00:36:59,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:59,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203402446] [2021-12-07 00:36:59,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203402446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:59,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660748351] [2021-12-07 00:36:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:59,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:59,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:59,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:59,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:36:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:59,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-07 00:36:59,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-07 00:36:59,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:37:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:37:00,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660748351] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:37:00,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:37:00,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 39 [2021-12-07 00:37:00,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137576452] [2021-12-07 00:37:00,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:37:00,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-07 00:37:00,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:00,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-07 00:37:00,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1388, Unknown=0, NotChecked=0, Total=1482 [2021-12-07 00:37:00,211 INFO L87 Difference]: Start difference. First operand 99057 states and 165359 transitions. Second operand has 39 states, 38 states have (on average 8.131578947368421) internal successors, (309), 31 states have internal predecessors, (309), 10 states have call successors, (55), 13 states have call predecessors, (55), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) [2021-12-07 00:37:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:30,282 INFO L93 Difference]: Finished difference Result 208758 states and 357932 transitions. [2021-12-07 00:37:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2021-12-07 00:37:30,282 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 8.131578947368421) internal successors, (309), 31 states have internal predecessors, (309), 10 states have call successors, (55), 13 states have call predecessors, (55), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) Word has length 175 [2021-12-07 00:37:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:30,907 INFO L225 Difference]: With dead ends: 208758 [2021-12-07 00:37:30,907 INFO L226 Difference]: Without dead ends: 207796 [2021-12-07 00:37:30,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19378 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6423, Invalid=47633, Unknown=0, NotChecked=0, Total=54056 [2021-12-07 00:37:30,984 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 14398 mSDsluCounter, 6936 mSDsCounter, 0 mSdLazyCounter, 37526 mSolverCounterSat, 14399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14401 SdHoareTripleChecker+Valid, 8122 SdHoareTripleChecker+Invalid, 51925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14399 IncrementalHoareTripleChecker+Valid, 37526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:30,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14401 Valid, 8122 Invalid, 51925 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14399 Valid, 37526 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2021-12-07 00:37:31,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207796 states. [2021-12-07 00:37:42,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207796 to 199137. [2021-12-07 00:37:42,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199137 states, 167837 states have (on average 1.5825175616818699) internal successors, (265605), 167902 states have internal predecessors, (265605), 31016 states have call successors, (31016), 198 states have call predecessors, (31016), 283 states have return successors, (37718), 31036 states have call predecessors, (37718), 30998 states have call successors, (37718) [2021-12-07 00:37:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199137 states to 199137 states and 334339 transitions. [2021-12-07 00:37:43,099 INFO L78 Accepts]: Start accepts. Automaton has 199137 states and 334339 transitions. Word has length 175 [2021-12-07 00:37:43,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:43,099 INFO L470 AbstractCegarLoop]: Abstraction has 199137 states and 334339 transitions. [2021-12-07 00:37:43,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 8.131578947368421) internal successors, (309), 31 states have internal predecessors, (309), 10 states have call successors, (55), 13 states have call predecessors, (55), 13 states have return successors, (49), 13 states have call predecessors, (49), 10 states have call successors, (49) [2021-12-07 00:37:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 199137 states and 334339 transitions. [2021-12-07 00:37:43,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-07 00:37:43,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:43,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:37:43,388 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:37:43,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-07 00:37:43,567 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:43,569 INFO L85 PathProgramCache]: Analyzing trace with hash -399222352, now seen corresponding path program 1 times [2021-12-07 00:37:43,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:43,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296982032] [2021-12-07 00:37:43,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:43,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:37:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:37:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:37:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:37:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:37:43,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:37:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:37:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:37:43,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:37:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:37:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:37:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:37:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:37:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:37:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:37:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-07 00:37:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-07 00:37:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:37:43,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:43,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296982032] [2021-12-07 00:37:43,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296982032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:43,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553324563] [2021-12-07 00:37:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:43,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:43,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:43,781 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:43,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:37:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:43,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:37:43,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:37:44,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:37:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 00:37:44,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553324563] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:37:44,968 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:37:44,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 55 [2021-12-07 00:37:44,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422686051] [2021-12-07 00:37:44,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:37:44,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-07 00:37:44,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-07 00:37:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2791, Unknown=0, NotChecked=0, Total=2970 [2021-12-07 00:37:44,970 INFO L87 Difference]: Start difference. First operand 199137 states and 334339 transitions. Second operand has 55 states, 46 states have (on average 6.956521739130435) internal successors, (320), 48 states have internal predecessors, (320), 16 states have call successors, (56), 13 states have call predecessors, (56), 19 states have return successors, (50), 10 states have call predecessors, (50), 16 states have call successors, (50) [2021-12-07 00:38:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:31,302 INFO L93 Difference]: Finished difference Result 615191 states and 1072318 transitions. [2021-12-07 00:38:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-07 00:38:31,302 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 46 states have (on average 6.956521739130435) internal successors, (320), 48 states have internal predecessors, (320), 16 states have call successors, (56), 13 states have call predecessors, (56), 19 states have return successors, (50), 10 states have call predecessors, (50), 16 states have call successors, (50) Word has length 176 [2021-12-07 00:38:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:33,608 INFO L225 Difference]: With dead ends: 615191 [2021-12-07 00:38:33,608 INFO L226 Difference]: Without dead ends: 612968 [2021-12-07 00:38:33,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 376 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4259 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2039, Invalid=14217, Unknown=0, NotChecked=0, Total=16256 [2021-12-07 00:38:33,818 INFO L933 BasicCegarLoop]: 907 mSDtfsCounter, 8198 mSDsluCounter, 5036 mSDsCounter, 0 mSdLazyCounter, 29741 mSolverCounterSat, 5139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8198 SdHoareTripleChecker+Valid, 5943 SdHoareTripleChecker+Invalid, 34880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5139 IncrementalHoareTripleChecker+Valid, 29741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:33,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8198 Valid, 5943 Invalid, 34880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5139 Valid, 29741 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-12-07 00:38:34,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612968 states. [2021-12-07 00:39:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612968 to 598513. [2021-12-07 00:39:15,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598513 states, 504306 states have (on average 1.5820910320321393) internal successors, (797858), 504429 states have internal predecessors, (797858), 93063 states have call successors, (93063), 754 states have call predecessors, (93063), 1143 states have return successors, (135280), 93329 states have call predecessors, (135280), 92991 states have call successors, (135280) [2021-12-07 00:39:17,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598513 states to 598513 states and 1026201 transitions. [2021-12-07 00:39:17,806 INFO L78 Accepts]: Start accepts. Automaton has 598513 states and 1026201 transitions. Word has length 176 [2021-12-07 00:39:17,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:17,806 INFO L470 AbstractCegarLoop]: Abstraction has 598513 states and 1026201 transitions. [2021-12-07 00:39:17,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 46 states have (on average 6.956521739130435) internal successors, (320), 48 states have internal predecessors, (320), 16 states have call successors, (56), 13 states have call predecessors, (56), 19 states have return successors, (50), 10 states have call predecessors, (50), 16 states have call successors, (50) [2021-12-07 00:39:17,806 INFO L276 IsEmpty]: Start isEmpty. Operand 598513 states and 1026201 transitions. [2021-12-07 00:39:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-07 00:39:18,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:18,895 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:39:18,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:39:19,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-07 00:39:19,098 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:19,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1073271076, now seen corresponding path program 1 times [2021-12-07 00:39:19,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:19,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629181140] [2021-12-07 00:39:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:19,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:39:19,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:39:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:39:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:39:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:39:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:39:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:39:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:39:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:39:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:39:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:39:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:39:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:39:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:39:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:39:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-07 00:39:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-07 00:39:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-07 00:39:19,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:19,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629181140] [2021-12-07 00:39:19,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629181140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:39:19,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:39:19,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-07 00:39:19,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109760199] [2021-12-07 00:39:19,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:19,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 00:39:19,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:19,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 00:39:19,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:39:19,236 INFO L87 Difference]: Start difference. First operand 598513 states and 1026201 transitions. Second operand has 15 states, 13 states have (on average 9.076923076923077) internal successors, (118), 10 states have internal predecessors, (118), 6 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-07 00:39:54,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:54,861 INFO L93 Difference]: Finished difference Result 617227 states and 1073044 transitions. [2021-12-07 00:39:54,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 00:39:54,861 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 9.076923076923077) internal successors, (118), 10 states have internal predecessors, (118), 6 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) Word has length 176 [2021-12-07 00:39:54,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:57,278 INFO L225 Difference]: With dead ends: 617227 [2021-12-07 00:39:57,278 INFO L226 Difference]: Without dead ends: 605401 [2021-12-07 00:39:57,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=1141, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 00:39:57,485 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 1533 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 4483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:57,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1533 Valid, 3193 Invalid, 4483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3820 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-07 00:39:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605401 states. [2021-12-07 00:40:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605401 to 597415. [2021-12-07 00:40:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597415 states, 503479 states have (on average 1.5824433591073312) internal successors, (796727), 503582 states have internal predecessors, (796727), 92875 states have call successors, (92875), 694 states have call predecessors, (92875), 1060 states have return successors, (135008), 93138 states have call predecessors, (135008), 92809 states have call successors, (135008) [2021-12-07 00:40:40,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597415 states to 597415 states and 1024610 transitions. [2021-12-07 00:40:40,374 INFO L78 Accepts]: Start accepts. Automaton has 597415 states and 1024610 transitions. Word has length 176 [2021-12-07 00:40:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:40,375 INFO L470 AbstractCegarLoop]: Abstraction has 597415 states and 1024610 transitions. [2021-12-07 00:40:40,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 9.076923076923077) internal successors, (118), 10 states have internal predecessors, (118), 6 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (18), 4 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-07 00:40:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 597415 states and 1024610 transitions. [2021-12-07 00:40:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:40:41,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:41,598 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:40:41,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-07 00:40:41,598 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:40:41,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:41,598 INFO L85 PathProgramCache]: Analyzing trace with hash -479123500, now seen corresponding path program 1 times [2021-12-07 00:40:41,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:41,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631891184] [2021-12-07 00:40:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:41,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:41,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:40:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:40:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:40:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:40:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:40:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:40:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:40:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:40:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:40:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:40:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:40:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:40:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:40:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:40:41,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-07 00:40:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-07 00:40:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 00:40:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:41,739 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-07 00:40:41,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:41,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631891184] [2021-12-07 00:40:41,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631891184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:41,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:40:41,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:40:41,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667081941] [2021-12-07 00:40:41,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:41,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:40:41,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:41,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:40:41,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:40:41,741 INFO L87 Difference]: Start difference. First operand 597415 states and 1024610 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-07 00:41:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:19,412 INFO L93 Difference]: Finished difference Result 618210 states and 1075302 transitions. [2021-12-07 00:41:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 00:41:19,413 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 177 [2021-12-07 00:41:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:21,689 INFO L225 Difference]: With dead ends: 618210 [2021-12-07 00:41:21,689 INFO L226 Difference]: Without dead ends: 608660 [2021-12-07 00:41:21,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2021-12-07 00:41:21,901 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1900 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 840 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 3166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 840 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:21,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 2180 Invalid, 3166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [840 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:41:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608660 states. [2021-12-07 00:42:02,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608660 to 597371. [2021-12-07 00:42:03,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597371 states, 503441 states have (on average 1.5823919784046194) internal successors, (796641), 503538 states have internal predecessors, (796641), 92869 states have call successors, (92869), 694 states have call predecessors, (92869), 1060 states have return successors, (134996), 93138 states have call predecessors, (134996), 92803 states have call successors, (134996) [2021-12-07 00:42:05,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597371 states to 597371 states and 1024506 transitions. [2021-12-07 00:42:05,329 INFO L78 Accepts]: Start accepts. Automaton has 597371 states and 1024506 transitions. Word has length 177 [2021-12-07 00:42:05,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:05,329 INFO L470 AbstractCegarLoop]: Abstraction has 597371 states and 1024506 transitions. [2021-12-07 00:42:05,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 6 states have internal predecessors, (121), 3 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-07 00:42:05,330 INFO L276 IsEmpty]: Start isEmpty. Operand 597371 states and 1024506 transitions. [2021-12-07 00:42:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-12-07 00:42:06,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:06,446 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:42:06,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-07 00:42:06,446 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:42:06,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash 337551458, now seen corresponding path program 1 times [2021-12-07 00:42:06,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:06,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041692602] [2021-12-07 00:42:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:06,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:42:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:42:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:42:06,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:42:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:42:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:42:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:42:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:42:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:42:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:42:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:42:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:42:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:42:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:42:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-07 00:42:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-07 00:42:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-07 00:42:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:42:06,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:06,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041692602] [2021-12-07 00:42:06,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041692602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:42:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832216606] [2021-12-07 00:42:06,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:06,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:42:06,634 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:42:06,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c3d89d0-332d-4033-8bbf-58f8bc7ca526/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:42:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:06,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-07 00:42:06,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:42:07,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:42:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-07 00:42:07,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832216606] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:42:07,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:42:07,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 18] total 55 [2021-12-07 00:42:07,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462606933] [2021-12-07 00:42:07,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:42:07,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-07 00:42:07,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:07,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-07 00:42:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2791, Unknown=0, NotChecked=0, Total=2970 [2021-12-07 00:42:07,757 INFO L87 Difference]: Start difference. First operand 597371 states and 1024506 transitions. Second operand has 55 states, 46 states have (on average 7.021739130434782) internal successors, (323), 48 states have internal predecessors, (323), 16 states have call successors, (56), 13 states have call predecessors, (56), 19 states have return successors, (50), 10 states have call predecessors, (50), 16 states have call successors, (50) [2021-12-07 00:43:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:43:46,896 INFO L93 Difference]: Finished difference Result 1417487 states and 2508987 transitions. [2021-12-07 00:43:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-12-07 00:43:46,897 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 46 states have (on average 7.021739130434782) internal successors, (323), 48 states have internal predecessors, (323), 16 states have call successors, (56), 13 states have call predecessors, (56), 19 states have return successors, (50), 10 states have call predecessors, (50), 16 states have call successors, (50) Word has length 177 [2021-12-07 00:43:46,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:43:53,185 INFO L225 Difference]: With dead ends: 1417487 [2021-12-07 00:43:53,185 INFO L226 Difference]: Without dead ends: 1411949 [2021-12-07 00:43:53,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4249 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2039, Invalid=14217, Unknown=0, NotChecked=0, Total=16256 [2021-12-07 00:43:53,715 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 7657 mSDsluCounter, 5311 mSDsCounter, 0 mSdLazyCounter, 28066 mSolverCounterSat, 3976 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7657 SdHoareTripleChecker+Valid, 6033 SdHoareTripleChecker+Invalid, 32042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3976 IncrementalHoareTripleChecker+Valid, 28066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:43:53,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7657 Valid, 6033 Invalid, 32042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3976 Valid, 28066 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-12-07 00:43:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411949 states.