./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.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_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/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_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/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_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/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 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:16:29,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:16:29,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:16:29,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:16:29,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:16:29,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:16:29,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:16:29,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:16:29,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:16:29,304 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:16:29,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:16:29,306 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:16:29,306 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:16:29,307 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:16:29,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:16:29,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:16:29,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:16:29,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:16:29,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:16:29,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:16:29,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:16:29,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:16:29,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:16:29,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:16:29,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:16:29,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:16:29,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:16:29,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:16:29,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:16:29,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:16:29,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:16:29,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:16:29,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:16:29,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:16:29,328 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:16:29,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:16:29,329 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:16:29,329 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:16:29,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:16:29,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:16:29,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:16:29,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:16:29,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:16:29,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:16:29,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:16:29,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:16:29,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:16:29,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:16:29,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:16:29,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:16:29,360 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:16:29,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:16:29,360 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:16:29,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:16:29,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:16:29,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:16:29,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:16:29,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:16:29,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:16:29,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:16:29,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:16:29,366 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:16:29,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:16:29,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:16:29,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:16:29,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:16:29,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:16:29,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:16:29,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:16:29,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:16:29,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:16:29,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:16:29,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:16:29,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:16:29,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:16:29,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:16:29,368 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_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c227f1dec7d604552aae19de1afcc1049837e83568477af6195219b22e2f636 [2021-12-06 20:16:29,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:16:29,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:16:29,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:16:29,568 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:16:29,568 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:16:29,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2021-12-06 20:16:29,610 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/data/0eb35f29a/14d926c6b6a343a6852322e64c1b7430/FLAGe31573ab7 [2021-12-06 20:16:30,004 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:16:30,005 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2021-12-06 20:16:30,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/data/0eb35f29a/14d926c6b6a343a6852322e64c1b7430/FLAGe31573ab7 [2021-12-06 20:16:30,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/data/0eb35f29a/14d926c6b6a343a6852322e64c1b7430 [2021-12-06 20:16:30,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:16:30,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:16:30,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:16:30,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:16:30,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:16:30,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456a4f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30, skipping insertion in model container [2021-12-06 20:16:30,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:16:30,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:16:30,225 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_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2021-12-06 20:16:30,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:16:30,233 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:16:30,274 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_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c[11921,11934] [2021-12-06 20:16:30,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:16:30,286 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:16:30,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30 WrapperNode [2021-12-06 20:16:30,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:16:30,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:16:30,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:16:30,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:16:30,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,328 INFO L137 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 402 [2021-12-06 20:16:30,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:16:30,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:16:30,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:16:30,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:16:30,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:16:30,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:16:30,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:16:30,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:16:30,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (1/1) ... [2021-12-06 20:16:30,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:16:30,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:30,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:16:30,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:16:30,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:16:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2021-12-06 20:16:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2021-12-06 20:16:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-06 20:16:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-06 20:16:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2021-12-06 20:16:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2021-12-06 20:16:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2021-12-06 20:16:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2021-12-06 20:16:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2021-12-06 20:16:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2021-12-06 20:16:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 20:16:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 20:16:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:16:30,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:16:30,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:16:30,498 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:16:30,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:16:30,838 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:16:30,847 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:16:30,847 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 20:16:30,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:16:30 BoogieIcfgContainer [2021-12-06 20:16:30,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:16:30,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:16:30,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:16:30,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:16:30,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:16:30" (1/3) ... [2021-12-06 20:16:30,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5075bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:16:30, skipping insertion in model container [2021-12-06 20:16:30,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:16:30" (2/3) ... [2021-12-06 20:16:30,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5075bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:16:30, skipping insertion in model container [2021-12-06 20:16:30,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:16:30" (3/3) ... [2021-12-06 20:16:30,857 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.UNBOUNDED.pals.c [2021-12-06 20:16:30,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:16:30,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:16:30,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:16:30,910 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 [2021-12-06 20:16:30,910 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:16:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 141 states have (on average 1.5886524822695036) internal successors, (224), 146 states have internal predecessors, (224), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-06 20:16:30,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 20:16:30,930 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:30,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:30,931 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:30,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:30,935 INFO L85 PathProgramCache]: Analyzing trace with hash 535506886, now seen corresponding path program 1 times [2021-12-06 20:16:30,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:30,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363790923] [2021-12-06 20:16:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:30,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:31,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363790923] [2021-12-06 20:16:31,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363790923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:31,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:31,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:31,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908636984] [2021-12-06 20:16:31,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:31,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:31,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:31,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:31,115 INFO L87 Difference]: Start difference. First operand has 186 states, 141 states have (on average 1.5886524822695036) internal successors, (224), 146 states have internal predecessors, (224), 37 states have call successors, (37), 6 states have call predecessors, (37), 6 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:31,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:31,188 INFO L93 Difference]: Finished difference Result 373 states and 641 transitions. [2021-12-06 20:16:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-06 20:16:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:31,198 INFO L225 Difference]: With dead ends: 373 [2021-12-06 20:16:31,198 INFO L226 Difference]: Without dead ends: 190 [2021-12-06 20:16:31,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:31,205 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 18 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:31,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 829 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:31,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-12-06 20:16:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2021-12-06 20:16:31,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 143 states have (on average 1.5384615384615385) internal successors, (220), 147 states have internal predecessors, (220), 37 states have call successors, (37), 7 states have call predecessors, (37), 7 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-06 20:16:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 294 transitions. [2021-12-06 20:16:31,248 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 294 transitions. Word has length 15 [2021-12-06 20:16:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:31,249 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 294 transitions. [2021-12-06 20:16:31,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 294 transitions. [2021-12-06 20:16:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 20:16:31,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:31,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:31,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:16:31,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -355990154, now seen corresponding path program 1 times [2021-12-06 20:16:31,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:31,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379446114] [2021-12-06 20:16:31,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:31,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:31,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379446114] [2021-12-06 20:16:31,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379446114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:31,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:31,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:31,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734656031] [2021-12-06 20:16:31,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:31,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:31,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:31,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:31,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:31,291 INFO L87 Difference]: Start difference. First operand 188 states and 294 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:31,328 INFO L93 Difference]: Finished difference Result 389 states and 611 transitions. [2021-12-06 20:16:31,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:31,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 20:16:31,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:31,331 INFO L225 Difference]: With dead ends: 389 [2021-12-06 20:16:31,331 INFO L226 Difference]: Without dead ends: 204 [2021-12-06 20:16:31,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:31,333 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 25 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:31,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 850 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-06 20:16:31,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 201. [2021-12-06 20:16:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 154 states have (on average 1.5194805194805194) internal successors, (234), 158 states have internal predecessors, (234), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 20:16:31,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 310 transitions. [2021-12-06 20:16:31,350 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 310 transitions. Word has length 16 [2021-12-06 20:16:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:31,350 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 310 transitions. [2021-12-06 20:16:31,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 20:16:31,351 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 310 transitions. [2021-12-06 20:16:31,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 20:16:31,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:31,352 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:31,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:16:31,352 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1515048690, now seen corresponding path program 1 times [2021-12-06 20:16:31,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:31,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46532684] [2021-12-06 20:16:31,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:31,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:31,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46532684] [2021-12-06 20:16:31,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46532684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:31,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:31,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:16:31,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231193291] [2021-12-06 20:16:31,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:31,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:16:31,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:31,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:16:31,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:16:31,401 INFO L87 Difference]: Start difference. First operand 201 states and 310 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 20:16:31,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:31,424 INFO L93 Difference]: Finished difference Result 421 states and 657 transitions. [2021-12-06 20:16:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:16:31,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-06 20:16:31,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:31,427 INFO L225 Difference]: With dead ends: 421 [2021-12-06 20:16:31,427 INFO L226 Difference]: Without dead ends: 230 [2021-12-06 20:16:31,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:16:31,430 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 22 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 574 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 [2021-12-06 20:16:31,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 574 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-12-06 20:16:31,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 203. [2021-12-06 20:16:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 156 states have (on average 1.5128205128205128) internal successors, (236), 160 states have internal predecessors, (236), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 20:16:31,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 312 transitions. [2021-12-06 20:16:31,447 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 312 transitions. Word has length 24 [2021-12-06 20:16:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:31,448 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 312 transitions. [2021-12-06 20:16:31,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 20:16:31,448 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 312 transitions. [2021-12-06 20:16:31,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 20:16:31,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:31,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:31,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:16:31,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:31,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:31,450 INFO L85 PathProgramCache]: Analyzing trace with hash 257838497, now seen corresponding path program 1 times [2021-12-06 20:16:31,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:31,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108985792] [2021-12-06 20:16:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:31,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:31,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108985792] [2021-12-06 20:16:31,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108985792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:31,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:31,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:16:31,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869128059] [2021-12-06 20:16:31,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:31,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:16:31,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:16:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:31,514 INFO L87 Difference]: Start difference. First operand 203 states and 312 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:16:31,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:31,549 INFO L93 Difference]: Finished difference Result 503 states and 792 transitions. [2021-12-06 20:16:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:31,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-06 20:16:31,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:31,553 INFO L225 Difference]: With dead ends: 503 [2021-12-06 20:16:31,553 INFO L226 Difference]: Without dead ends: 316 [2021-12-06 20:16:31,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:31,555 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 128 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:31,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1214 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:31,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-12-06 20:16:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 207. [2021-12-06 20:16:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.5031446540880504) internal successors, (239), 163 states have internal predecessors, (239), 38 states have call successors, (38), 8 states have call predecessors, (38), 9 states have return successors, (39), 39 states have call predecessors, (39), 38 states have call successors, (39) [2021-12-06 20:16:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 316 transitions. [2021-12-06 20:16:31,576 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 316 transitions. Word has length 32 [2021-12-06 20:16:31,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:31,576 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 316 transitions. [2021-12-06 20:16:31,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:16:31,576 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 316 transitions. [2021-12-06 20:16:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 20:16:31,578 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:31,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:31,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:16:31,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:31,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash -559699066, now seen corresponding path program 1 times [2021-12-06 20:16:31,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:31,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649210076] [2021-12-06 20:16:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:31,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:16:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:31,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649210076] [2021-12-06 20:16:31,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649210076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:31,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:31,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:16:31,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299962792] [2021-12-06 20:16:31,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:31,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:16:31,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:16:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:16:31,654 INFO L87 Difference]: Start difference. First operand 207 states and 316 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:16:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:31,704 INFO L93 Difference]: Finished difference Result 359 states and 554 transitions. [2021-12-06 20:16:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:16:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2021-12-06 20:16:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:31,706 INFO L225 Difference]: With dead ends: 359 [2021-12-06 20:16:31,706 INFO L226 Difference]: Without dead ends: 203 [2021-12-06 20:16:31,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:16:31,707 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 128 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:31,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1232 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:31,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-06 20:16:31,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-12-06 20:16:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 156 states have (on average 1.4807692307692308) internal successors, (231), 160 states have internal predecessors, (231), 38 states have call successors, (38), 8 states have call predecessors, (38), 8 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-06 20:16:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 307 transitions. [2021-12-06 20:16:31,718 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 307 transitions. Word has length 35 [2021-12-06 20:16:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:31,718 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 307 transitions. [2021-12-06 20:16:31,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 20:16:31,719 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 307 transitions. [2021-12-06 20:16:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 20:16:31,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:31,720 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:31,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:16:31,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:31,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:31,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1454829501, now seen corresponding path program 1 times [2021-12-06 20:16:31,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:31,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098132976] [2021-12-06 20:16:31,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:31,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098132976] [2021-12-06 20:16:31,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098132976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:31,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466334926] [2021-12-06 20:16:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:31,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:31,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:31,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:16:31,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:31,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:16:31,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:16:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:16:31,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466334926] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:16:31,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:16:31,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-06 20:16:31,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490451883] [2021-12-06 20:16:31,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:16:31,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:16:31,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:16:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:31,954 INFO L87 Difference]: Start difference. First operand 203 states and 307 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:16:31,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:31,989 INFO L93 Difference]: Finished difference Result 454 states and 701 transitions. [2021-12-06 20:16:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:31,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2021-12-06 20:16:31,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:31,992 INFO L225 Difference]: With dead ends: 454 [2021-12-06 20:16:31,992 INFO L226 Difference]: Without dead ends: 262 [2021-12-06 20:16:31,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:31,994 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 96 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:31,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 593 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:31,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-06 20:16:32,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2021-12-06 20:16:32,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 199 states have (on average 1.4572864321608041) internal successors, (290), 203 states have internal predecessors, (290), 48 states have call successors, (48), 8 states have call predecessors, (48), 8 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-06 20:16:32,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 386 transitions. [2021-12-06 20:16:32,009 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 386 transitions. Word has length 35 [2021-12-06 20:16:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:32,009 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 386 transitions. [2021-12-06 20:16:32,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 20:16:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 386 transitions. [2021-12-06 20:16:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 20:16:32,010 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:32,011 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:32,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:16:32,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:32,213 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:32,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:32,214 INFO L85 PathProgramCache]: Analyzing trace with hash -581068643, now seen corresponding path program 2 times [2021-12-06 20:16:32,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:32,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083442940] [2021-12-06 20:16:32,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:32,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:32,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 20:16:32,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:32,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083442940] [2021-12-06 20:16:32,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083442940] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:32,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:32,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:32,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756874524] [2021-12-06 20:16:32,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:32,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:32,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:32,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:32,389 INFO L87 Difference]: Start difference. First operand 256 states and 386 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:16:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:32,422 INFO L93 Difference]: Finished difference Result 522 states and 798 transitions. [2021-12-06 20:16:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:32,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-06 20:16:32,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:32,425 INFO L225 Difference]: With dead ends: 522 [2021-12-06 20:16:32,426 INFO L226 Difference]: Without dead ends: 295 [2021-12-06 20:16:32,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:32,428 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 24 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:32,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 842 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:32,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-12-06 20:16:32,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 292. [2021-12-06 20:16:32,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 231 states have (on average 1.4155844155844155) internal successors, (327), 235 states have internal predecessors, (327), 51 states have call successors, (51), 9 states have call predecessors, (51), 9 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-06 20:16:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 429 transitions. [2021-12-06 20:16:32,446 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 429 transitions. Word has length 57 [2021-12-06 20:16:32,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:32,447 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 429 transitions. [2021-12-06 20:16:32,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:16:32,447 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 429 transitions. [2021-12-06 20:16:32,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 20:16:32,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:32,448 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:32,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:16:32,448 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:32,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:32,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1268107058, now seen corresponding path program 1 times [2021-12-06 20:16:32,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:32,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180039960] [2021-12-06 20:16:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:32,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:32,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-06 20:16:32,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:32,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180039960] [2021-12-06 20:16:32,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180039960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:32,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:32,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:32,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764618196] [2021-12-06 20:16:32,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:32,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:32,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:32,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:32,511 INFO L87 Difference]: Start difference. First operand 292 states and 429 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:16:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:32,547 INFO L93 Difference]: Finished difference Result 559 states and 845 transitions. [2021-12-06 20:16:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-06 20:16:32,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:32,549 INFO L225 Difference]: With dead ends: 559 [2021-12-06 20:16:32,549 INFO L226 Difference]: Without dead ends: 301 [2021-12-06 20:16:32,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:32,551 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 19 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:32,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 828 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-06 20:16:32,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2021-12-06 20:16:32,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 237 states have (on average 1.4135021097046414) internal successors, (335), 241 states have internal predecessors, (335), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-06 20:16:32,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 437 transitions. [2021-12-06 20:16:32,564 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 437 transitions. Word has length 57 [2021-12-06 20:16:32,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:32,564 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 437 transitions. [2021-12-06 20:16:32,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 20:16:32,564 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 437 transitions. [2021-12-06 20:16:32,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 20:16:32,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:32,565 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:32,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:16:32,565 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:32,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:32,566 INFO L85 PathProgramCache]: Analyzing trace with hash -996792945, now seen corresponding path program 1 times [2021-12-06 20:16:32,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:32,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772471425] [2021-12-06 20:16:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:32,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:32,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:32,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 20:16:32,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:32,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772471425] [2021-12-06 20:16:32,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772471425] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:32,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:32,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:16:32,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341141755] [2021-12-06 20:16:32,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:32,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:16:32,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:32,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:16:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:32,635 INFO L87 Difference]: Start difference. First operand 299 states and 437 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 20:16:32,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:32,656 INFO L93 Difference]: Finished difference Result 547 states and 813 transitions. [2021-12-06 20:16:32,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:32,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2021-12-06 20:16:32,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:32,658 INFO L225 Difference]: With dead ends: 547 [2021-12-06 20:16:32,658 INFO L226 Difference]: Without dead ends: 301 [2021-12-06 20:16:32,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:32,660 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 0 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:32,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1123 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2021-12-06 20:16:32,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2021-12-06 20:16:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 237 states have (on average 1.40084388185654) internal successors, (332), 241 states have internal predecessors, (332), 51 states have call successors, (51), 10 states have call predecessors, (51), 10 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-06 20:16:32,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 434 transitions. [2021-12-06 20:16:32,672 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 434 transitions. Word has length 75 [2021-12-06 20:16:32,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:32,673 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 434 transitions. [2021-12-06 20:16:32,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 20:16:32,673 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 434 transitions. [2021-12-06 20:16:32,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-06 20:16:32,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:32,674 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:32,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:16:32,674 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2026074511, now seen corresponding path program 1 times [2021-12-06 20:16:32,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:32,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496278090] [2021-12-06 20:16:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:32,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:32,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,736 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-06 20:16:32,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:32,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496278090] [2021-12-06 20:16:32,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496278090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:32,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:32,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:32,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138993923] [2021-12-06 20:16:32,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:32,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:32,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:32,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:32,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:32,738 INFO L87 Difference]: Start difference. First operand 299 states and 434 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 20:16:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:32,771 INFO L93 Difference]: Finished difference Result 584 states and 869 transitions. [2021-12-06 20:16:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:32,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2021-12-06 20:16:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:32,773 INFO L225 Difference]: With dead ends: 584 [2021-12-06 20:16:32,774 INFO L226 Difference]: Without dead ends: 343 [2021-12-06 20:16:32,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:32,775 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 25 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:32,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 842 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:32,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-06 20:16:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 340. [2021-12-06 20:16:32,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 274 states have (on average 1.364963503649635) internal successors, (374), 278 states have internal predecessors, (374), 54 states have call successors, (54), 11 states have call predecessors, (54), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-06 20:16:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 482 transitions. [2021-12-06 20:16:32,788 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 482 transitions. Word has length 104 [2021-12-06 20:16:32,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:32,788 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 482 transitions. [2021-12-06 20:16:32,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 20:16:32,788 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 482 transitions. [2021-12-06 20:16:32,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-06 20:16:32,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:32,789 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:32,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:16:32,790 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:32,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:32,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1302977286, now seen corresponding path program 1 times [2021-12-06 20:16:32,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:32,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7293075] [2021-12-06 20:16:32,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:32,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-06 20:16:32,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:32,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7293075] [2021-12-06 20:16:32,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7293075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:32,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:32,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:32,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67622796] [2021-12-06 20:16:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:32,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:32,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:32,848 INFO L87 Difference]: Start difference. First operand 340 states and 482 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 20:16:32,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:32,888 INFO L93 Difference]: Finished difference Result 610 states and 889 transitions. [2021-12-06 20:16:32,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:16:32,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2021-12-06 20:16:32,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:32,892 INFO L225 Difference]: With dead ends: 610 [2021-12-06 20:16:32,892 INFO L226 Difference]: Without dead ends: 334 [2021-12-06 20:16:32,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:32,894 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 15 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:32,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 801 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-06 20:16:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2021-12-06 20:16:32,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 269 states have (on average 1.345724907063197) internal successors, (362), 273 states have internal predecessors, (362), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-06 20:16:32,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 468 transitions. [2021-12-06 20:16:32,913 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 468 transitions. Word has length 105 [2021-12-06 20:16:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:32,914 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 468 transitions. [2021-12-06 20:16:32,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 20:16:32,914 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 468 transitions. [2021-12-06 20:16:32,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 20:16:32,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:32,916 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:32,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:16:32,916 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash 286281457, now seen corresponding path program 1 times [2021-12-06 20:16:32,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:32,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138000765] [2021-12-06 20:16:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:32,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:32,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,009 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-06 20:16:33,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:33,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138000765] [2021-12-06 20:16:33,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138000765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:33,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:33,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:16:33,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613645436] [2021-12-06 20:16:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:33,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:16:33,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:33,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:16:33,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:33,011 INFO L87 Difference]: Start difference. First operand 334 states and 468 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 20:16:33,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:33,030 INFO L93 Difference]: Finished difference Result 585 states and 838 transitions. [2021-12-06 20:16:33,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:33,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2021-12-06 20:16:33,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:33,032 INFO L225 Difference]: With dead ends: 585 [2021-12-06 20:16:33,032 INFO L226 Difference]: Without dead ends: 336 [2021-12-06 20:16:33,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:33,034 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:33,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1107 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-12-06 20:16:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 334. [2021-12-06 20:16:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 269 states have (on average 1.3345724907063197) internal successors, (359), 273 states have internal predecessors, (359), 53 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-06 20:16:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 465 transitions. [2021-12-06 20:16:33,046 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 465 transitions. Word has length 124 [2021-12-06 20:16:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:33,047 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 465 transitions. [2021-12-06 20:16:33,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 20:16:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 465 transitions. [2021-12-06 20:16:33,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-06 20:16:33,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:33,048 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:33,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:16:33,049 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:33,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:33,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1881609517, now seen corresponding path program 1 times [2021-12-06 20:16:33,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:33,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887515697] [2021-12-06 20:16:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:33,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-06 20:16:33,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:33,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887515697] [2021-12-06 20:16:33,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887515697] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:33,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:33,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:33,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156007508] [2021-12-06 20:16:33,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:33,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:33,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:33,127 INFO L87 Difference]: Start difference. First operand 334 states and 465 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 20:16:33,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:33,163 INFO L93 Difference]: Finished difference Result 548 states and 798 transitions. [2021-12-06 20:16:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:16:33,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2021-12-06 20:16:33,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:33,165 INFO L225 Difference]: With dead ends: 548 [2021-12-06 20:16:33,165 INFO L226 Difference]: Without dead ends: 332 [2021-12-06 20:16:33,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:33,167 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 13 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:33,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 769 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:33,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-12-06 20:16:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-12-06 20:16:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 268 states have (on average 1.3320895522388059) internal successors, (357), 272 states have internal predecessors, (357), 52 states have call successors, (52), 11 states have call predecessors, (52), 11 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-06 20:16:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 461 transitions. [2021-12-06 20:16:33,178 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 461 transitions. Word has length 157 [2021-12-06 20:16:33,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:33,179 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 461 transitions. [2021-12-06 20:16:33,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 20:16:33,179 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 461 transitions. [2021-12-06 20:16:33,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 20:16:33,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:33,181 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:33,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:16:33,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:33,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash -855321017, now seen corresponding path program 1 times [2021-12-06 20:16:33,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:33,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920342212] [2021-12-06 20:16:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:33,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:33,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 20:16:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-06 20:16:33,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:33,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920342212] [2021-12-06 20:16:33,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920342212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:33,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:33,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:33,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979327438] [2021-12-06 20:16:33,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:33,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:33,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:33,281 INFO L87 Difference]: Start difference. First operand 332 states and 461 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 20:16:33,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:33,317 INFO L93 Difference]: Finished difference Result 488 states and 694 transitions. [2021-12-06 20:16:33,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:33,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 176 [2021-12-06 20:16:33,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:33,319 INFO L225 Difference]: With dead ends: 488 [2021-12-06 20:16:33,319 INFO L226 Difference]: Without dead ends: 315 [2021-12-06 20:16:33,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:33,320 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 35 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:33,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 750 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-06 20:16:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-12-06 20:16:33,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 254 states have (on average 1.3228346456692914) internal successors, (336), 258 states have internal predecessors, (336), 49 states have call successors, (49), 11 states have call predecessors, (49), 11 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-06 20:16:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 434 transitions. [2021-12-06 20:16:33,332 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 434 transitions. Word has length 176 [2021-12-06 20:16:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:33,332 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 434 transitions. [2021-12-06 20:16:33,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 20:16:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 434 transitions. [2021-12-06 20:16:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 20:16:33,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:33,334 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:33,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:16:33,334 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:33,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:33,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1739802048, now seen corresponding path program 1 times [2021-12-06 20:16:33,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:33,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812141379] [2021-12-06 20:16:33,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:33,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:33,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 20:16:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-12-06 20:16:33,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:33,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812141379] [2021-12-06 20:16:33,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812141379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:33,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:33,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:33,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146425270] [2021-12-06 20:16:33,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:33,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:33,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:33,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:33,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:33,421 INFO L87 Difference]: Start difference. First operand 315 states and 434 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 20:16:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:33,454 INFO L93 Difference]: Finished difference Result 471 states and 667 transitions. [2021-12-06 20:16:33,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:33,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 178 [2021-12-06 20:16:33,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:33,457 INFO L225 Difference]: With dead ends: 471 [2021-12-06 20:16:33,457 INFO L226 Difference]: Without dead ends: 296 [2021-12-06 20:16:33,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:33,458 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 30 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:33,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 754 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:33,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-06 20:16:33,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-12-06 20:16:33,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 238 states have (on average 1.315126050420168) internal successors, (313), 242 states have internal predecessors, (313), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-06 20:16:33,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 405 transitions. [2021-12-06 20:16:33,469 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 405 transitions. Word has length 178 [2021-12-06 20:16:33,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:33,469 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 405 transitions. [2021-12-06 20:16:33,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 20:16:33,469 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 405 transitions. [2021-12-06 20:16:33,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:16:33,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:33,471 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:33,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:16:33,471 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1086957777, now seen corresponding path program 1 times [2021-12-06 20:16:33,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:33,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989429135] [2021-12-06 20:16:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:33,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:33,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 20:16:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,563 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-06 20:16:33,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989429135] [2021-12-06 20:16:33,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989429135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:33,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:33,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:16:33,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842805994] [2021-12-06 20:16:33,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:33,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:16:33,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:16:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:33,565 INFO L87 Difference]: Start difference. First operand 296 states and 405 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:16:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:33,580 INFO L93 Difference]: Finished difference Result 451 states and 637 transitions. [2021-12-06 20:16:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:33,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 179 [2021-12-06 20:16:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:33,582 INFO L225 Difference]: With dead ends: 451 [2021-12-06 20:16:33,582 INFO L226 Difference]: Without dead ends: 296 [2021-12-06 20:16:33,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:33,583 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:33,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1085 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:33,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-06 20:16:33,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2021-12-06 20:16:33,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 238 states have (on average 1.2899159663865547) internal successors, (307), 242 states have internal predecessors, (307), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-06 20:16:33,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 399 transitions. [2021-12-06 20:16:33,593 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 399 transitions. Word has length 179 [2021-12-06 20:16:33,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:33,594 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 399 transitions. [2021-12-06 20:16:33,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 20:16:33,594 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 399 transitions. [2021-12-06 20:16:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 20:16:33,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:33,596 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:33,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:16:33,596 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:33,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:33,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2059675566, now seen corresponding path program 1 times [2021-12-06 20:16:33,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:33,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190432080] [2021-12-06 20:16:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:33,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:33,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 20:16:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,672 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-06 20:16:33,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:33,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190432080] [2021-12-06 20:16:33,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190432080] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:33,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600871276] [2021-12-06 20:16:33,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:33,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:33,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:33,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:33,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:16:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:33,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:16:33,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-06 20:16:33,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:16:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-06 20:16:34,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600871276] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:34,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:16:34,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2021-12-06 20:16:34,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708069668] [2021-12-06 20:16:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:34,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:34,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:34,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:34,129 INFO L87 Difference]: Start difference. First operand 296 states and 399 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:16:34,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:34,158 INFO L93 Difference]: Finished difference Result 472 states and 659 transitions. [2021-12-06 20:16:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:16:34,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 186 [2021-12-06 20:16:34,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:34,160 INFO L225 Difference]: With dead ends: 472 [2021-12-06 20:16:34,161 INFO L226 Difference]: Without dead ends: 275 [2021-12-06 20:16:34,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 398 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:34,162 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 25 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:34,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 753 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-12-06 20:16:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-12-06 20:16:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 220 states have (on average 1.2818181818181817) internal successors, (282), 224 states have internal predecessors, (282), 43 states have call successors, (43), 11 states have call predecessors, (43), 11 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-06 20:16:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 368 transitions. [2021-12-06 20:16:34,173 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 368 transitions. Word has length 186 [2021-12-06 20:16:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:34,174 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 368 transitions. [2021-12-06 20:16:34,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:16:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 368 transitions. [2021-12-06 20:16:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 20:16:34,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:34,176 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:34,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:16:34,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:34,377 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:34,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:34,378 INFO L85 PathProgramCache]: Analyzing trace with hash -347660191, now seen corresponding path program 1 times [2021-12-06 20:16:34,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:34,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746648010] [2021-12-06 20:16:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:34,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:34,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:34,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-06 20:16:34,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:34,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746648010] [2021-12-06 20:16:34,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746648010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:34,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:34,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:34,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796419971] [2021-12-06 20:16:34,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:34,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:34,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:34,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:34,509 INFO L87 Difference]: Start difference. First operand 275 states and 368 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 20:16:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:34,532 INFO L93 Difference]: Finished difference Result 429 states and 600 transitions. [2021-12-06 20:16:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:34,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 210 [2021-12-06 20:16:34,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:34,535 INFO L225 Difference]: With dead ends: 429 [2021-12-06 20:16:34,535 INFO L226 Difference]: Without dead ends: 281 [2021-12-06 20:16:34,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:34,536 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 6 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:34,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 794 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-12-06 20:16:34,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2021-12-06 20:16:34,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 223 states have (on average 1.2780269058295963) internal successors, (285), 227 states have internal predecessors, (285), 43 states have call successors, (43), 12 states have call predecessors, (43), 12 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-06 20:16:34,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 371 transitions. [2021-12-06 20:16:34,551 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 371 transitions. Word has length 210 [2021-12-06 20:16:34,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:34,551 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 371 transitions. [2021-12-06 20:16:34,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-06 20:16:34,552 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 371 transitions. [2021-12-06 20:16:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-12-06 20:16:34,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:34,555 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:34,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:16:34,555 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:34,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash -855668969, now seen corresponding path program 1 times [2021-12-06 20:16:34,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:34,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793448320] [2021-12-06 20:16:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:34,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:34,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-06 20:16:34,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:34,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793448320] [2021-12-06 20:16:34,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793448320] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:34,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570712066] [2021-12-06 20:16:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:34,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:34,681 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:34,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:16:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:34,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:16:34,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-06 20:16:34,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:34,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570712066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:34,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:34,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 20:16:34,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828373358] [2021-12-06 20:16:34,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:34,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:34,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:34,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:34,961 INFO L87 Difference]: Start difference. First operand 279 states and 371 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 20:16:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:34,986 INFO L93 Difference]: Finished difference Result 438 states and 607 transitions. [2021-12-06 20:16:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:34,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 219 [2021-12-06 20:16:34,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:34,989 INFO L225 Difference]: With dead ends: 438 [2021-12-06 20:16:34,989 INFO L226 Difference]: Without dead ends: 286 [2021-12-06 20:16:34,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:16:34,991 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 7 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:34,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 799 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-12-06 20:16:35,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2021-12-06 20:16:35,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 227 states have (on average 1.2731277533039647) internal successors, (289), 231 states have internal predecessors, (289), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-06 20:16:35,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 375 transitions. [2021-12-06 20:16:35,005 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 375 transitions. Word has length 219 [2021-12-06 20:16:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:35,006 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 375 transitions. [2021-12-06 20:16:35,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-06 20:16:35,006 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 375 transitions. [2021-12-06 20:16:35,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-12-06 20:16:35,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:35,009 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:35,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:16:35,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:35,210 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:35,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:35,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1462568680, now seen corresponding path program 1 times [2021-12-06 20:16:35,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:35,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281720438] [2021-12-06 20:16:35,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:35,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:35,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-06 20:16:35,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:35,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281720438] [2021-12-06 20:16:35,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281720438] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:35,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252165048] [2021-12-06 20:16:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:35,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:35,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:35,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:16:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:35,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:16:35,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-06 20:16:35,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:35,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252165048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:35,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:35,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 20:16:35,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727487426] [2021-12-06 20:16:35,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:35,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:35,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:35,683 INFO L87 Difference]: Start difference. First operand 284 states and 375 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:16:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:35,703 INFO L93 Difference]: Finished difference Result 440 states and 605 transitions. [2021-12-06 20:16:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:16:35,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 229 [2021-12-06 20:16:35,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:35,705 INFO L225 Difference]: With dead ends: 440 [2021-12-06 20:16:35,706 INFO L226 Difference]: Without dead ends: 283 [2021-12-06 20:16:35,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:16:35,707 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 7 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:35,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 785 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-06 20:16:35,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2021-12-06 20:16:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 227 states have (on average 1.2599118942731278) internal successors, (286), 230 states have internal predecessors, (286), 42 states have call successors, (42), 13 states have call predecessors, (42), 13 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2021-12-06 20:16:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 370 transitions. [2021-12-06 20:16:35,718 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 370 transitions. Word has length 229 [2021-12-06 20:16:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:35,718 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 370 transitions. [2021-12-06 20:16:35,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:16:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 370 transitions. [2021-12-06 20:16:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-06 20:16:35,720 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:35,720 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:35,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 20:16:35,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:35,922 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash 888305907, now seen corresponding path program 1 times [2021-12-06 20:16:35,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:35,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039555471] [2021-12-06 20:16:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:35,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:36,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:36,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:36,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:36,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-06 20:16:36,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:36,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039555471] [2021-12-06 20:16:36,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039555471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:36,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:36,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:36,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254715986] [2021-12-06 20:16:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:36,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:36,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:36,133 INFO L87 Difference]: Start difference. First operand 283 states and 370 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 20:16:36,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:36,330 INFO L93 Difference]: Finished difference Result 481 states and 666 transitions. [2021-12-06 20:16:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:16:36,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 239 [2021-12-06 20:16:36,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:36,333 INFO L225 Difference]: With dead ends: 481 [2021-12-06 20:16:36,333 INFO L226 Difference]: Without dead ends: 325 [2021-12-06 20:16:36,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:36,334 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 181 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:36,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 642 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:16:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-06 20:16:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 282. [2021-12-06 20:16:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 227 states have (on average 1.2555066079295154) internal successors, (285), 229 states have internal predecessors, (285), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-06 20:16:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 367 transitions. [2021-12-06 20:16:36,348 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 367 transitions. Word has length 239 [2021-12-06 20:16:36,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:36,348 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 367 transitions. [2021-12-06 20:16:36,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2021-12-06 20:16:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 367 transitions. [2021-12-06 20:16:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-06 20:16:36,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:36,349 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:36,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 20:16:36,350 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:36,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1279032433, now seen corresponding path program 1 times [2021-12-06 20:16:36,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:36,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350686565] [2021-12-06 20:16:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:36,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,487 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-06 20:16:36,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:36,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350686565] [2021-12-06 20:16:36,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350686565] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:36,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:36,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:16:36,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146045874] [2021-12-06 20:16:36,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:36,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:16:36,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:36,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:16:36,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:36,490 INFO L87 Difference]: Start difference. First operand 282 states and 367 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:16:36,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:36,849 INFO L93 Difference]: Finished difference Result 668 states and 899 transitions. [2021-12-06 20:16:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:16:36,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 240 [2021-12-06 20:16:36,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:36,854 INFO L225 Difference]: With dead ends: 668 [2021-12-06 20:16:36,854 INFO L226 Difference]: Without dead ends: 513 [2021-12-06 20:16:36,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:16:36,855 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 433 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:36,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 865 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:16:36,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-12-06 20:16:36,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 504. [2021-12-06 20:16:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 402 states have (on average 1.308457711442786) internal successors, (526), 404 states have internal predecessors, (526), 70 states have call successors, (70), 31 states have call predecessors, (70), 31 states have return successors, (70), 69 states have call predecessors, (70), 70 states have call successors, (70) [2021-12-06 20:16:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 666 transitions. [2021-12-06 20:16:36,889 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 666 transitions. Word has length 240 [2021-12-06 20:16:36,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:36,890 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 666 transitions. [2021-12-06 20:16:36,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:16:36,890 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 666 transitions. [2021-12-06 20:16:36,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-12-06 20:16:36,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:36,893 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:36,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 20:16:36,893 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1440781215, now seen corresponding path program 1 times [2021-12-06 20:16:36,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:36,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614989348] [2021-12-06 20:16:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:36,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:36,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:36,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-06 20:16:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 20:16:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:16:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:16:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-06 20:16:37,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:37,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614989348] [2021-12-06 20:16:37,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614989348] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:37,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:37,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:37,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880360655] [2021-12-06 20:16:37,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:37,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:37,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:37,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:37,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:37,030 INFO L87 Difference]: Start difference. First operand 504 states and 666 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 20:16:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:37,336 INFO L93 Difference]: Finished difference Result 1103 states and 1508 transitions. [2021-12-06 20:16:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 273 [2021-12-06 20:16:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:37,343 INFO L225 Difference]: With dead ends: 1103 [2021-12-06 20:16:37,343 INFO L226 Difference]: Without dead ends: 807 [2021-12-06 20:16:37,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:37,345 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 219 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:37,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 622 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:16:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2021-12-06 20:16:37,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 638. [2021-12-06 20:16:37,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 511 states have (on average 1.3150684931506849) internal successors, (672), 517 states have internal predecessors, (672), 85 states have call successors, (85), 41 states have call predecessors, (85), 41 states have return successors, (85), 81 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-06 20:16:37,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 842 transitions. [2021-12-06 20:16:37,375 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 842 transitions. Word has length 273 [2021-12-06 20:16:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:37,375 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 842 transitions. [2021-12-06 20:16:37,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 20:16:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 842 transitions. [2021-12-06 20:16:37,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-12-06 20:16:37,377 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:37,377 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:37,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 20:16:37,377 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:37,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:37,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1894509391, now seen corresponding path program 1 times [2021-12-06 20:16:37,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:37,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469550434] [2021-12-06 20:16:37,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:37,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:37,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:37,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-06 20:16:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:16:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 20:16:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:16:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-06 20:16:37,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:37,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469550434] [2021-12-06 20:16:37,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469550434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:37,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:37,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:37,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218008923] [2021-12-06 20:16:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:37,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:37,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:37,483 INFO L87 Difference]: Start difference. First operand 638 states and 842 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 20:16:37,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:37,783 INFO L93 Difference]: Finished difference Result 1404 states and 1902 transitions. [2021-12-06 20:16:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:37,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 274 [2021-12-06 20:16:37,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:37,790 INFO L225 Difference]: With dead ends: 1404 [2021-12-06 20:16:37,791 INFO L226 Difference]: Without dead ends: 1013 [2021-12-06 20:16:37,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:37,793 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 222 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:37,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 655 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:16:37,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2021-12-06 20:16:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 999. [2021-12-06 20:16:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 792 states have (on average 1.3396464646464648) internal successors, (1061), 806 states have internal predecessors, (1061), 139 states have call successors, (139), 67 states have call predecessors, (139), 67 states have return successors, (139), 129 states have call predecessors, (139), 139 states have call successors, (139) [2021-12-06 20:16:37,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1339 transitions. [2021-12-06 20:16:37,841 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1339 transitions. Word has length 274 [2021-12-06 20:16:37,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:37,842 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1339 transitions. [2021-12-06 20:16:37,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 3 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-06 20:16:37,842 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1339 transitions. [2021-12-06 20:16:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-06 20:16:37,844 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:37,844 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:37,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 20:16:37,845 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:37,845 INFO L85 PathProgramCache]: Analyzing trace with hash -58219654, now seen corresponding path program 1 times [2021-12-06 20:16:37,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:37,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437562714] [2021-12-06 20:16:37,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:37,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:37,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:37,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:37,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-06 20:16:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 20:16:37,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:37,953 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-06 20:16:37,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:37,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437562714] [2021-12-06 20:16:37,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437562714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:37,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:37,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:16:37,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295387011] [2021-12-06 20:16:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:37,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:37,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:37,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:16:37,955 INFO L87 Difference]: Start difference. First operand 999 states and 1339 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:16:38,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:38,254 INFO L93 Difference]: Finished difference Result 2307 states and 3165 transitions. [2021-12-06 20:16:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:38,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 275 [2021-12-06 20:16:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:38,266 INFO L225 Difference]: With dead ends: 2307 [2021-12-06 20:16:38,266 INFO L226 Difference]: Without dead ends: 1601 [2021-12-06 20:16:38,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:38,269 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 224 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:38,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 687 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:16:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2021-12-06 20:16:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1575. [2021-12-06 20:16:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1236 states have (on average 1.3632686084142396) internal successors, (1685), 1264 states have internal predecessors, (1685), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-06 20:16:38,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2147 transitions. [2021-12-06 20:16:38,349 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2147 transitions. Word has length 275 [2021-12-06 20:16:38,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:38,350 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 2147 transitions. [2021-12-06 20:16:38,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:16:38,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2147 transitions. [2021-12-06 20:16:38,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-12-06 20:16:38,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:38,352 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:38,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 20:16:38,352 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:38,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:38,353 INFO L85 PathProgramCache]: Analyzing trace with hash -452586440, now seen corresponding path program 1 times [2021-12-06 20:16:38,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:38,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155152006] [2021-12-06 20:16:38,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:38,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:38,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-06 20:16:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 20:16:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,495 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-12-06 20:16:38,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:38,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155152006] [2021-12-06 20:16:38,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155152006] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:38,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870933981] [2021-12-06 20:16:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:38,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:38,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:38,497 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:38,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:16:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:38,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:16:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:38,803 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-06 20:16:38,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:38,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870933981] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:38,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:38,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-06 20:16:38,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706948070] [2021-12-06 20:16:38,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:38,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:38,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:38,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:38,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:16:38,805 INFO L87 Difference]: Start difference. First operand 1575 states and 2147 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:16:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:38,886 INFO L93 Difference]: Finished difference Result 2897 states and 4006 transitions. [2021-12-06 20:16:38,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:38,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 275 [2021-12-06 20:16:38,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:38,894 INFO L225 Difference]: With dead ends: 2897 [2021-12-06 20:16:38,894 INFO L226 Difference]: Without dead ends: 1575 [2021-12-06 20:16:38,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:16:38,898 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 51 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:38,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 702 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-12-06 20:16:38,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1575. [2021-12-06 20:16:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1575 states, 1236 states have (on average 1.3438511326860842) internal successors, (1661), 1264 states have internal predecessors, (1661), 231 states have call successors, (231), 107 states have call predecessors, (231), 107 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-06 20:16:38,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1575 states to 1575 states and 2123 transitions. [2021-12-06 20:16:38,958 INFO L78 Accepts]: Start accepts. Automaton has 1575 states and 2123 transitions. Word has length 275 [2021-12-06 20:16:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:38,958 INFO L470 AbstractCegarLoop]: Abstraction has 1575 states and 2123 transitions. [2021-12-06 20:16:38,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:16:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1575 states and 2123 transitions. [2021-12-06 20:16:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-12-06 20:16:38,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:38,960 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:38,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:16:39,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 20:16:39,162 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:39,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:39,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1485642055, now seen corresponding path program 1 times [2021-12-06 20:16:39,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:39,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712161637] [2021-12-06 20:16:39,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:39,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-06 20:16:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 621 trivial. 0 not checked. [2021-12-06 20:16:39,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:39,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712161637] [2021-12-06 20:16:39,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712161637] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:39,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043224075] [2021-12-06 20:16:39,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:39,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:39,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:39,307 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:39,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:16:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:39,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 918 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:16:39,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2021-12-06 20:16:39,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:39,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043224075] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:39,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:39,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-06 20:16:39,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287916286] [2021-12-06 20:16:39,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:39,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:39,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:39,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:39,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:16:39,582 INFO L87 Difference]: Start difference. First operand 1575 states and 2123 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:16:39,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:39,651 INFO L93 Difference]: Finished difference Result 2897 states and 3950 transitions. [2021-12-06 20:16:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:39,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 276 [2021-12-06 20:16:39,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:39,660 INFO L225 Difference]: With dead ends: 2897 [2021-12-06 20:16:39,660 INFO L226 Difference]: Without dead ends: 1623 [2021-12-06 20:16:39,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:16:39,663 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 15 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:39,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 725 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2021-12-06 20:16:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1623. [2021-12-06 20:16:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1276 states have (on average 1.3456112852664577) internal successors, (1717), 1304 states have internal predecessors, (1717), 231 states have call successors, (231), 115 states have call predecessors, (231), 115 states have return successors, (231), 211 states have call predecessors, (231), 231 states have call successors, (231) [2021-12-06 20:16:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2179 transitions. [2021-12-06 20:16:39,734 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2179 transitions. Word has length 276 [2021-12-06 20:16:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:39,734 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2179 transitions. [2021-12-06 20:16:39,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 20:16:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2179 transitions. [2021-12-06 20:16:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-06 20:16:39,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:39,739 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:39,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:16:39,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 20:16:39,940 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:39,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:39,941 INFO L85 PathProgramCache]: Analyzing trace with hash 703925714, now seen corresponding path program 1 times [2021-12-06 20:16:39,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:39,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311132182] [2021-12-06 20:16:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:39,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:40,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:40,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 20:16:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-12-06 20:16:40,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:40,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311132182] [2021-12-06 20:16:40,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311132182] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:40,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721649222] [2021-12-06 20:16:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:40,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:40,140 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:40,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:16:40,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:16:40,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-12-06 20:16:40,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:40,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721649222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:40,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:40,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 13 [2021-12-06 20:16:40,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496293275] [2021-12-06 20:16:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:40,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:16:40,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:40,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:16:40,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:16:40,470 INFO L87 Difference]: Start difference. First operand 1623 states and 2179 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-06 20:16:40,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:40,621 INFO L93 Difference]: Finished difference Result 2481 states and 3558 transitions. [2021-12-06 20:16:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:16:40,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 277 [2021-12-06 20:16:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:40,644 INFO L225 Difference]: With dead ends: 2481 [2021-12-06 20:16:40,644 INFO L226 Difference]: Without dead ends: 2479 [2021-12-06 20:16:40,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:16:40,646 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 189 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:40,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 1840 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:40,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2021-12-06 20:16:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 1671. [2021-12-06 20:16:40,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1671 states, 1308 states have (on average 1.3371559633027523) internal successors, (1749), 1344 states have internal predecessors, (1749), 239 states have call successors, (239), 123 states have call predecessors, (239), 123 states have return successors, (239), 211 states have call predecessors, (239), 239 states have call successors, (239) [2021-12-06 20:16:40,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1671 states to 1671 states and 2227 transitions. [2021-12-06 20:16:40,734 INFO L78 Accepts]: Start accepts. Automaton has 1671 states and 2227 transitions. Word has length 277 [2021-12-06 20:16:40,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:40,734 INFO L470 AbstractCegarLoop]: Abstraction has 1671 states and 2227 transitions. [2021-12-06 20:16:40,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-06 20:16:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1671 states and 2227 transitions. [2021-12-06 20:16:40,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-12-06 20:16:40,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:40,737 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:40,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:16:40,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:40,938 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1034356429, now seen corresponding path program 1 times [2021-12-06 20:16:40,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:40,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539245078] [2021-12-06 20:16:40,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:40,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 20:16:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 20:16:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-12-06 20:16:41,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539245078] [2021-12-06 20:16:41,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539245078] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406246416] [2021-12-06 20:16:41,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:41,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:41,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:41,093 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:41,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:16:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:41,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 20:16:41,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 251 proven. 37 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-12-06 20:16:41,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:16:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2021-12-06 20:16:41,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406246416] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:16:41,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:16:41,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2021-12-06 20:16:41,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265778097] [2021-12-06 20:16:41,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:16:41,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 20:16:41,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 20:16:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:16:41,766 INFO L87 Difference]: Start difference. First operand 1671 states and 2227 transitions. Second operand has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2021-12-06 20:16:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:42,807 INFO L93 Difference]: Finished difference Result 4890 states and 7030 transitions. [2021-12-06 20:16:42,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 20:16:42,807 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) Word has length 285 [2021-12-06 20:16:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:42,825 INFO L225 Difference]: With dead ends: 4890 [2021-12-06 20:16:42,825 INFO L226 Difference]: Without dead ends: 3520 [2021-12-06 20:16:42,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 20:16:42,828 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 786 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 1834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:42,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 3316 Invalid, 1834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 20:16:42,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3520 states. [2021-12-06 20:16:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3520 to 2498. [2021-12-06 20:16:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2498 states, 1952 states have (on average 1.3288934426229508) internal successors, (2594), 2004 states have internal predecessors, (2594), 356 states have call successors, (356), 183 states have call predecessors, (356), 189 states have return successors, (364), 318 states have call predecessors, (364), 356 states have call successors, (364) [2021-12-06 20:16:42,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2498 states to 2498 states and 3314 transitions. [2021-12-06 20:16:42,958 INFO L78 Accepts]: Start accepts. Automaton has 2498 states and 3314 transitions. Word has length 285 [2021-12-06 20:16:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:42,959 INFO L470 AbstractCegarLoop]: Abstraction has 2498 states and 3314 transitions. [2021-12-06 20:16:42,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.31578947368421) internal successors, (158), 14 states have internal predecessors, (158), 5 states have call successors, (32), 5 states have call predecessors, (32), 9 states have return successors, (31), 8 states have call predecessors, (31), 5 states have call successors, (31) [2021-12-06 20:16:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2498 states and 3314 transitions. [2021-12-06 20:16:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-12-06 20:16:42,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:42,962 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:42,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:16:43,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 20:16:43,163 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:43,164 INFO L85 PathProgramCache]: Analyzing trace with hash -72742412, now seen corresponding path program 1 times [2021-12-06 20:16:43,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:43,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843806160] [2021-12-06 20:16:43,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:43,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:43,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:43,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:43,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 20:16:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 20:16:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-12-06 20:16:43,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:43,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843806160] [2021-12-06 20:16:43,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843806160] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:43,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205538325] [2021-12-06 20:16:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:43,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:43,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:43,269 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:43,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 20:16:43,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:43,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 942 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:16:43,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2021-12-06 20:16:43,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:43,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205538325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:43,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:43,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 20:16:43,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011654648] [2021-12-06 20:16:43,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:43,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:43,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:43,584 INFO L87 Difference]: Start difference. First operand 2498 states and 3314 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:16:43,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:43,712 INFO L93 Difference]: Finished difference Result 4829 states and 6504 transitions. [2021-12-06 20:16:43,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:43,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 285 [2021-12-06 20:16:43,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:43,727 INFO L225 Difference]: With dead ends: 4829 [2021-12-06 20:16:43,727 INFO L226 Difference]: Without dead ends: 2434 [2021-12-06 20:16:43,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:16:43,733 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 11 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:43,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 725 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:43,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2021-12-06 20:16:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 2434. [2021-12-06 20:16:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2434 states, 1908 states have (on average 1.3123689727463312) internal successors, (2504), 1960 states have internal predecessors, (2504), 340 states have call successors, (340), 183 states have call predecessors, (340), 185 states have return successors, (344), 298 states have call predecessors, (344), 340 states have call successors, (344) [2021-12-06 20:16:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2434 states to 2434 states and 3188 transitions. [2021-12-06 20:16:43,844 INFO L78 Accepts]: Start accepts. Automaton has 2434 states and 3188 transitions. Word has length 285 [2021-12-06 20:16:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:43,845 INFO L470 AbstractCegarLoop]: Abstraction has 2434 states and 3188 transitions. [2021-12-06 20:16:43,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:16:43,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2434 states and 3188 transitions. [2021-12-06 20:16:43,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-12-06 20:16:43,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:43,848 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:43,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 20:16:44,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:44,050 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:44,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:44,051 INFO L85 PathProgramCache]: Analyzing trace with hash -658847465, now seen corresponding path program 1 times [2021-12-06 20:16:44,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:44,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061072717] [2021-12-06 20:16:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:44,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:44,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 20:16:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:16:44,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 20:16:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 20:16:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 20:16:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-06 20:16:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 20:16:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 20:16:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-06 20:16:44,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-06 20:16:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-06 20:16:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2021-12-06 20:16:44,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061072717] [2021-12-06 20:16:44,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061072717] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:44,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619086379] [2021-12-06 20:16:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:44,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:44,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:44,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:44,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 20:16:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:44,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:16:44,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:44,538 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 472 trivial. 0 not checked. [2021-12-06 20:16:44,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:44,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619086379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:44,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:44,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 20:16:44,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856690245] [2021-12-06 20:16:44,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:44,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:16:44,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:16:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:44,539 INFO L87 Difference]: Start difference. First operand 2434 states and 3188 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 20:16:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:44,637 INFO L93 Difference]: Finished difference Result 4590 states and 6117 transitions. [2021-12-06 20:16:44,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:16:44,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 288 [2021-12-06 20:16:44,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:44,646 INFO L225 Difference]: With dead ends: 4590 [2021-12-06 20:16:44,647 INFO L226 Difference]: Without dead ends: 2241 [2021-12-06 20:16:44,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:16:44,650 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 8 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:44,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 728 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:16:44,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-12-06 20:16:44,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2241. [2021-12-06 20:16:44,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 1745 states have (on average 1.3060171919770773) internal successors, (2279), 1797 states have internal predecessors, (2279), 323 states have call successors, (323), 172 states have call predecessors, (323), 172 states have return successors, (323), 279 states have call predecessors, (323), 323 states have call successors, (323) [2021-12-06 20:16:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2925 transitions. [2021-12-06 20:16:44,736 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2925 transitions. Word has length 288 [2021-12-06 20:16:44,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:44,736 INFO L470 AbstractCegarLoop]: Abstraction has 2241 states and 2925 transitions. [2021-12-06 20:16:44,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 20:16:44,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2925 transitions. [2021-12-06 20:16:44,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-12-06 20:16:44,739 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:44,739 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:44,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 20:16:44,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:44,940 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:44,940 INFO L85 PathProgramCache]: Analyzing trace with hash 940177722, now seen corresponding path program 1 times [2021-12-06 20:16:44,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:44,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953546226] [2021-12-06 20:16:44,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:44,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:45,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:45,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:45,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 20:16:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 20:16:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:16:45,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:16:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 719 trivial. 0 not checked. [2021-12-06 20:16:45,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:45,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953546226] [2021-12-06 20:16:45,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953546226] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:45,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750022068] [2021-12-06 20:16:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:45,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:45,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:45,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:45,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 20:16:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:45,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 20:16:45,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-06 20:16:45,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:45,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750022068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:45,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:45,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2021-12-06 20:16:45,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209773510] [2021-12-06 20:16:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:45,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:16:45,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:16:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:16:45,459 INFO L87 Difference]: Start difference. First operand 2241 states and 2925 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:46,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:46,151 INFO L93 Difference]: Finished difference Result 8387 states and 11327 transitions. [2021-12-06 20:16:46,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 20:16:46,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 300 [2021-12-06 20:16:46,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:46,179 INFO L225 Difference]: With dead ends: 8387 [2021-12-06 20:16:46,179 INFO L226 Difference]: Without dead ends: 6741 [2021-12-06 20:16:46,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 20:16:46,183 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 1124 mSDsluCounter, 3296 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:46,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 3777 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:16:46,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2021-12-06 20:16:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 5317. [2021-12-06 20:16:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 4098 states have (on average 1.2962420693020986) internal successors, (5312), 4226 states have internal predecessors, (5312), 787 states have call successors, (787), 431 states have call predecessors, (787), 431 states have return successors, (787), 667 states have call predecessors, (787), 787 states have call successors, (787) [2021-12-06 20:16:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 6886 transitions. [2021-12-06 20:16:46,415 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 6886 transitions. Word has length 300 [2021-12-06 20:16:46,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:46,415 INFO L470 AbstractCegarLoop]: Abstraction has 5317 states and 6886 transitions. [2021-12-06 20:16:46,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 9 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 6886 transitions. [2021-12-06 20:16:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-06 20:16:46,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:46,418 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:46,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 20:16:46,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 20:16:46,619 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:46,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:46,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1154930967, now seen corresponding path program 1 times [2021-12-06 20:16:46,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:46,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752634706] [2021-12-06 20:16:46,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:46,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:46,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-06 20:16:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-06 20:16:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-06 20:16:46,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:16:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-12-06 20:16:46,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752634706] [2021-12-06 20:16:46,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752634706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:46,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:46,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:16:46,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481896329] [2021-12-06 20:16:46,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:46,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:16:46,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:46,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:16:46,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:16:46,728 INFO L87 Difference]: Start difference. First operand 5317 states and 6886 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:47,452 INFO L93 Difference]: Finished difference Result 16895 states and 24131 transitions. [2021-12-06 20:16:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:16:47,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 306 [2021-12-06 20:16:47,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:47,489 INFO L225 Difference]: With dead ends: 16895 [2021-12-06 20:16:47,489 INFO L226 Difference]: Without dead ends: 12113 [2021-12-06 20:16:47,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:16:47,501 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 511 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:47,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [577 Valid, 1986 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:16:47,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12113 states. [2021-12-06 20:16:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12113 to 5749. [2021-12-06 20:16:47,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5749 states, 4446 states have (on average 1.3063427800269904) internal successors, (5808), 4574 states have internal predecessors, (5808), 871 states have call successors, (871), 431 states have call predecessors, (871), 431 states have return successors, (871), 751 states have call predecessors, (871), 871 states have call successors, (871) [2021-12-06 20:16:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5749 states to 5749 states and 7550 transitions. [2021-12-06 20:16:47,837 INFO L78 Accepts]: Start accepts. Automaton has 5749 states and 7550 transitions. Word has length 306 [2021-12-06 20:16:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:47,837 INFO L470 AbstractCegarLoop]: Abstraction has 5749 states and 7550 transitions. [2021-12-06 20:16:47,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 6 states have internal predecessors, (103), 5 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5749 states and 7550 transitions. [2021-12-06 20:16:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-06 20:16:47,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:47,841 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:47,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 20:16:47,842 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:47,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -675484013, now seen corresponding path program 1 times [2021-12-06 20:16:47,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:47,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261218254] [2021-12-06 20:16:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:47,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:47,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:47,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:47,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-06 20:16:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-06 20:16:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-06 20:16:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:16:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,021 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2021-12-06 20:16:48,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261218254] [2021-12-06 20:16:48,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261218254] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:48,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576419963] [2021-12-06 20:16:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:48,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:48,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:48,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:48,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 20:16:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:48,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 20:16:48,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2021-12-06 20:16:48,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:48,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576419963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:48,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:48,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2021-12-06 20:16:48,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66781574] [2021-12-06 20:16:48,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:48,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:16:48,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:48,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:16:48,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:16:48,491 INFO L87 Difference]: Start difference. First operand 5749 states and 7550 transitions. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:49,754 INFO L93 Difference]: Finished difference Result 17903 states and 24399 transitions. [2021-12-06 20:16:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 20:16:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 306 [2021-12-06 20:16:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:49,781 INFO L225 Difference]: With dead ends: 17903 [2021-12-06 20:16:49,781 INFO L226 Difference]: Without dead ends: 12693 [2021-12-06 20:16:49,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 358 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-12-06 20:16:49,790 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 1233 mSDsluCounter, 3469 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 4123 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:49,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 4123 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:16:49,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12693 states. [2021-12-06 20:16:50,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12693 to 6937. [2021-12-06 20:16:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6937 states, 5350 states have (on average 1.3005607476635515) internal successors, (6958), 5510 states have internal predecessors, (6958), 1059 states have call successors, (1059), 527 states have call predecessors, (1059), 527 states have return successors, (1059), 907 states have call predecessors, (1059), 1059 states have call successors, (1059) [2021-12-06 20:16:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6937 states to 6937 states and 9076 transitions. [2021-12-06 20:16:50,209 INFO L78 Accepts]: Start accepts. Automaton has 6937 states and 9076 transitions. Word has length 306 [2021-12-06 20:16:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:50,210 INFO L470 AbstractCegarLoop]: Abstraction has 6937 states and 9076 transitions. [2021-12-06 20:16:50,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 9 states have internal predecessors, (123), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:50,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6937 states and 9076 transitions. [2021-12-06 20:16:50,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-06 20:16:50,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:50,213 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:50,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 20:16:50,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-12-06 20:16:50,414 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:50,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:50,415 INFO L85 PathProgramCache]: Analyzing trace with hash 211570835, now seen corresponding path program 1 times [2021-12-06 20:16:50,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:50,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502488183] [2021-12-06 20:16:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:50,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:50,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:50,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:50,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:50,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:50,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:50,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-06 20:16:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-06 20:16:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-06 20:16:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:16:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 764 trivial. 0 not checked. [2021-12-06 20:16:50,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:50,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502488183] [2021-12-06 20:16:50,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502488183] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:50,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988179598] [2021-12-06 20:16:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:50,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:50,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:50,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:50,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 20:16:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:50,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 20:16:50,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-06 20:16:51,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:16:51,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988179598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:51,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:16:51,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 12 [2021-12-06 20:16:51,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072028317] [2021-12-06 20:16:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:51,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:16:51,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:51,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:16:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:16:51,052 INFO L87 Difference]: Start difference. First operand 6937 states and 9076 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:52,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:52,466 INFO L93 Difference]: Finished difference Result 16577 states and 22426 transitions. [2021-12-06 20:16:52,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 20:16:52,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 306 [2021-12-06 20:16:52,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:52,489 INFO L225 Difference]: With dead ends: 16577 [2021-12-06 20:16:52,489 INFO L226 Difference]: Without dead ends: 10381 [2021-12-06 20:16:52,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 358 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-12-06 20:16:52,499 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 1333 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 3707 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:52,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 3707 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:16:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10381 states. [2021-12-06 20:16:52,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10381 to 6745. [2021-12-06 20:16:52,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 5206 states have (on average 1.2935074913561275) internal successors, (6734), 5362 states have internal predecessors, (6734), 1015 states have call successors, (1015), 523 states have call predecessors, (1015), 523 states have return successors, (1015), 867 states have call predecessors, (1015), 1015 states have call successors, (1015) [2021-12-06 20:16:52,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 8764 transitions. [2021-12-06 20:16:52,905 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 8764 transitions. Word has length 306 [2021-12-06 20:16:52,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:52,905 INFO L470 AbstractCegarLoop]: Abstraction has 6745 states and 8764 transitions. [2021-12-06 20:16:52,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-06 20:16:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 8764 transitions. [2021-12-06 20:16:52,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-12-06 20:16:52,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:52,908 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 20:16:52,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 20:16:53,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-06 20:16:53,110 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 211738833, now seen corresponding path program 1 times [2021-12-06 20:16:53,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:53,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141259099] [2021-12-06 20:16:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:53,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:53,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:53,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:53,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-06 20:16:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-06 20:16:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-06 20:16:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:16:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 774 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-12-06 20:16:53,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:53,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141259099] [2021-12-06 20:16:53,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141259099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:53,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:53,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:16:53,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250720347] [2021-12-06 20:16:53,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:53,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:16:53,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:53,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:16:53,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:16:53,272 INFO L87 Difference]: Start difference. First operand 6745 states and 8764 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 20:16:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:53,952 INFO L93 Difference]: Finished difference Result 12369 states and 16147 transitions. [2021-12-06 20:16:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:16:53,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 306 [2021-12-06 20:16:53,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:53,983 INFO L225 Difference]: With dead ends: 12369 [2021-12-06 20:16:53,983 INFO L226 Difference]: Without dead ends: 6455 [2021-12-06 20:16:53,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:16:53,990 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 467 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:53,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 756 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:16:53,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2021-12-06 20:16:54,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 6187. [2021-12-06 20:16:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6187 states, 4775 states have (on average 1.2959162303664922) internal successors, (6188), 4915 states have internal predecessors, (6188), 935 states have call successors, (935), 476 states have call predecessors, (935), 476 states have return successors, (935), 803 states have call predecessors, (935), 935 states have call successors, (935) [2021-12-06 20:16:54,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6187 states to 6187 states and 8058 transitions. [2021-12-06 20:16:54,318 INFO L78 Accepts]: Start accepts. Automaton has 6187 states and 8058 transitions. Word has length 306 [2021-12-06 20:16:54,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:54,318 INFO L470 AbstractCegarLoop]: Abstraction has 6187 states and 8058 transitions. [2021-12-06 20:16:54,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 20:16:54,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6187 states and 8058 transitions. [2021-12-06 20:16:54,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-06 20:16:54,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:54,321 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:54,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 20:16:54,321 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:54,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:54,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2007399893, now seen corresponding path program 1 times [2021-12-06 20:16:54,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:54,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937870949] [2021-12-06 20:16:54,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:54,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:54,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:54,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:54,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:54,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 20:16:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-06 20:16:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:16:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 20:16:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:16:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 714 trivial. 0 not checked. [2021-12-06 20:16:54,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:54,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937870949] [2021-12-06 20:16:54,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937870949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:16:54,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:16:54,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:16:54,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070909382] [2021-12-06 20:16:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:16:54,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:16:54,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:54,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:16:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:16:54,443 INFO L87 Difference]: Start difference. First operand 6187 states and 8058 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 20:16:55,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:55,128 INFO L93 Difference]: Finished difference Result 11093 states and 14461 transitions. [2021-12-06 20:16:55,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:16:55,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 318 [2021-12-06 20:16:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:16:55,139 INFO L225 Difference]: With dead ends: 11093 [2021-12-06 20:16:55,139 INFO L226 Difference]: Without dead ends: 5741 [2021-12-06 20:16:55,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:16:55,147 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 496 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:16:55,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 1030 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:16:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5741 states. [2021-12-06 20:16:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5741 to 5449. [2021-12-06 20:16:55,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5449 states, 4213 states have (on average 1.2777118442914788) internal successors, (5383), 4329 states have internal predecessors, (5383), 815 states have call successors, (815), 420 states have call predecessors, (815), 420 states have return successors, (815), 699 states have call predecessors, (815), 815 states have call successors, (815) [2021-12-06 20:16:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5449 states to 5449 states and 7013 transitions. [2021-12-06 20:16:55,466 INFO L78 Accepts]: Start accepts. Automaton has 5449 states and 7013 transitions. Word has length 318 [2021-12-06 20:16:55,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:16:55,466 INFO L470 AbstractCegarLoop]: Abstraction has 5449 states and 7013 transitions. [2021-12-06 20:16:55,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-06 20:16:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5449 states and 7013 transitions. [2021-12-06 20:16:55,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-12-06 20:16:55,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:16:55,472 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:16:55,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 20:16:55,472 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:16:55,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:16:55,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1555364013, now seen corresponding path program 1 times [2021-12-06 20:16:55,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:16:55,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121737229] [2021-12-06 20:16:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:55,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:16:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:16:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:16:55,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:16:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:16:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:16:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:16:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:16:55,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:16:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:16:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:16:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:16:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:16:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:16:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:16:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:16:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:16:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:16:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:16:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:16:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:16:55,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:16:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:16:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 20:16:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-06 20:16:55,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:16:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 20:16:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:16:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-06 20:16:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-06 20:16:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-06 20:16:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 20:16:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:16:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,747 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 47 proven. 186 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2021-12-06 20:16:55,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:16:55,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121737229] [2021-12-06 20:16:55,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121737229] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:16:55,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168932916] [2021-12-06 20:16:55,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:16:55,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:16:55,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:16:55,748 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:16:55,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 20:16:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:16:55,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1277 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-06 20:16:55,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:16:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 151 proven. 33 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2021-12-06 20:16:56,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:16:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 842 trivial. 0 not checked. [2021-12-06 20:16:56,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168932916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:16:56,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:16:56,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 9] total 25 [2021-12-06 20:16:56,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408830110] [2021-12-06 20:16:56,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:16:56,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 20:16:56,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:16:56,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 20:16:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:16:56,518 INFO L87 Difference]: Start difference. First operand 5449 states and 7013 transitions. Second operand has 25 states, 25 states have (on average 9.0) internal successors, (225), 19 states have internal predecessors, (225), 6 states have call successors, (50), 6 states have call predecessors, (50), 11 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) [2021-12-06 20:16:59,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:16:59,971 INFO L93 Difference]: Finished difference Result 21505 states and 29021 transitions. [2021-12-06 20:16:59,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 20:16:59,972 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.0) internal successors, (225), 19 states have internal predecessors, (225), 6 states have call successors, (50), 6 states have call predecessors, (50), 11 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) Word has length 363 [2021-12-06 20:16:59,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:00,002 INFO L225 Difference]: With dead ends: 21505 [2021-12-06 20:17:00,002 INFO L226 Difference]: Without dead ends: 16595 [2021-12-06 20:17:00,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 789 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=306, Invalid=2346, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 20:17:00,011 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 970 mSDsluCounter, 8098 mSDsCounter, 0 mSdLazyCounter, 4387 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 8743 SdHoareTripleChecker+Invalid, 4766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 4387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:00,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 8743 Invalid, 4766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 4387 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 20:17:00,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16595 states. [2021-12-06 20:17:00,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16595 to 9351. [2021-12-06 20:17:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9351 states, 7188 states have (on average 1.2668336115748469) internal successors, (9106), 7360 states have internal predecessors, (9106), 1408 states have call successors, (1408), 696 states have call predecessors, (1408), 754 states have return successors, (1492), 1294 states have call predecessors, (1492), 1408 states have call successors, (1492) [2021-12-06 20:17:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9351 states to 9351 states and 12006 transitions. [2021-12-06 20:17:00,625 INFO L78 Accepts]: Start accepts. Automaton has 9351 states and 12006 transitions. Word has length 363 [2021-12-06 20:17:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:00,626 INFO L470 AbstractCegarLoop]: Abstraction has 9351 states and 12006 transitions. [2021-12-06 20:17:00,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.0) internal successors, (225), 19 states have internal predecessors, (225), 6 states have call successors, (50), 6 states have call predecessors, (50), 11 states have return successors, (52), 10 states have call predecessors, (52), 6 states have call successors, (52) [2021-12-06 20:17:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand 9351 states and 12006 transitions. [2021-12-06 20:17:00,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-12-06 20:17:00,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:00,635 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:00,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 20:17:00,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 20:17:00,837 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:00,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:00,838 INFO L85 PathProgramCache]: Analyzing trace with hash 212309995, now seen corresponding path program 1 times [2021-12-06 20:17:00,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:00,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052337752] [2021-12-06 20:17:00,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:00,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:00,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:17:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:17:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:17:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:17:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 20:17:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-06 20:17:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:17:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 20:17:00,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:17:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-06 20:17:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-06 20:17:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-06 20:17:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 20:17:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:17:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 59 proven. 10 refuted. 0 times theorem prover too weak. 824 trivial. 0 not checked. [2021-12-06 20:17:00,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052337752] [2021-12-06 20:17:00,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052337752] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504335790] [2021-12-06 20:17:00,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:00,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:00,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:00,968 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:00,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 20:17:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:01,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:17:01,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-12-06 20:17:01,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:17:01,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504335790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:01,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:17:01,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 20:17:01,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374195651] [2021-12-06 20:17:01,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:01,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:17:01,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:01,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:17:01,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:17:01,286 INFO L87 Difference]: Start difference. First operand 9351 states and 12006 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 20:17:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:01,699 INFO L93 Difference]: Finished difference Result 17129 states and 21777 transitions. [2021-12-06 20:17:01,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:17:01,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 363 [2021-12-06 20:17:01,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:01,726 INFO L225 Difference]: With dead ends: 17129 [2021-12-06 20:17:01,727 INFO L226 Difference]: Without dead ends: 7375 [2021-12-06 20:17:01,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:17:01,739 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 40 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:01,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 684 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:17:01,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7375 states. [2021-12-06 20:17:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7375 to 7375. [2021-12-06 20:17:02,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7375 states, 5716 states have (on average 1.2197340797760672) internal successors, (6972), 5860 states have internal predecessors, (6972), 1056 states have call successors, (1056), 600 states have call predecessors, (1056), 602 states have return successors, (1060), 914 states have call predecessors, (1060), 1056 states have call successors, (1060) [2021-12-06 20:17:02,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7375 states to 7375 states and 9088 transitions. [2021-12-06 20:17:02,176 INFO L78 Accepts]: Start accepts. Automaton has 7375 states and 9088 transitions. Word has length 363 [2021-12-06 20:17:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:02,176 INFO L470 AbstractCegarLoop]: Abstraction has 7375 states and 9088 transitions. [2021-12-06 20:17:02,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-06 20:17:02,177 INFO L276 IsEmpty]: Start isEmpty. Operand 7375 states and 9088 transitions. [2021-12-06 20:17:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2021-12-06 20:17:02,185 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:02,186 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:02,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 20:17:02,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:02,387 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:02,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:02,389 INFO L85 PathProgramCache]: Analyzing trace with hash -120530508, now seen corresponding path program 1 times [2021-12-06 20:17:02,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:02,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053636430] [2021-12-06 20:17:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:02,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:17:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 20:17:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:17:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 20:17:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:17:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 20:17:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 20:17:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-06 20:17:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-06 20:17:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 20:17:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 20:17:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-06 20:17:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-06 20:17:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-06 20:17:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-06 20:17:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:17:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-06 20:17:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:17:02,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-06 20:17:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-12-06 20:17:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-06 20:17:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-06 20:17:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-12-06 20:17:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,514 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2021-12-06 20:17:02,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:02,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053636430] [2021-12-06 20:17:02,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053636430] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:02,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420694148] [2021-12-06 20:17:02,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:02,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:02,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:02,516 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:02,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 20:17:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:02,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:17:02,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-12-06 20:17:02,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:17:02,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420694148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:02,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:17:02,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-06 20:17:02,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450940093] [2021-12-06 20:17:02,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:02,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:17:02,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:02,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:17:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:17:02,854 INFO L87 Difference]: Start difference. First operand 7375 states and 9088 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 20:17:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:03,316 INFO L93 Difference]: Finished difference Result 14273 states and 17624 transitions. [2021-12-06 20:17:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:17:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 376 [2021-12-06 20:17:03,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:03,331 INFO L225 Difference]: With dead ends: 14273 [2021-12-06 20:17:03,331 INFO L226 Difference]: Without dead ends: 6899 [2021-12-06 20:17:03,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:17:03,338 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 28 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:03,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 691 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:17:03,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2021-12-06 20:17:03,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6675. [2021-12-06 20:17:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6675 states, 5154 states have (on average 1.221963523476911) internal successors, (6298), 5286 states have internal predecessors, (6298), 975 states have call successors, (975), 545 states have call predecessors, (975), 545 states have return successors, (975), 843 states have call predecessors, (975), 975 states have call successors, (975) [2021-12-06 20:17:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6675 states to 6675 states and 8248 transitions. [2021-12-06 20:17:03,748 INFO L78 Accepts]: Start accepts. Automaton has 6675 states and 8248 transitions. Word has length 376 [2021-12-06 20:17:03,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:03,748 INFO L470 AbstractCegarLoop]: Abstraction has 6675 states and 8248 transitions. [2021-12-06 20:17:03,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-06 20:17:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 6675 states and 8248 transitions. [2021-12-06 20:17:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2021-12-06 20:17:03,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:03,757 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:03,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 20:17:03,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 20:17:03,958 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:03,959 INFO L85 PathProgramCache]: Analyzing trace with hash 770785367, now seen corresponding path program 1 times [2021-12-06 20:17:03,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:03,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076446422] [2021-12-06 20:17:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:03,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:04,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:17:04,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 20:17:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:17:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 20:17:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2021-12-06 20:17:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-06 20:17:04,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-06 20:17:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 20:17:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:17:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-06 20:17:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-06 20:17:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-06 20:17:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-12-06 20:17:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-12-06 20:17:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-06 20:17:04,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 368 [2021-12-06 20:17:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 52 proven. 56 refuted. 0 times theorem prover too weak. 906 trivial. 0 not checked. [2021-12-06 20:17:04,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076446422] [2021-12-06 20:17:04,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076446422] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:04,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423153151] [2021-12-06 20:17:04,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:04,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:04,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:04,226 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:04,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 20:17:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:04,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1326 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 20:17:04,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:04,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 239 proven. 248 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2021-12-06 20:17:04,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:17:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1014 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 997 trivial. 0 not checked. [2021-12-06 20:17:05,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423153151] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:05,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:17:05,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15, 17] total 31 [2021-12-06 20:17:05,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111765964] [2021-12-06 20:17:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:05,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:17:05,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:17:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:17:05,122 INFO L87 Difference]: Start difference. First operand 6675 states and 8248 transitions. Second operand has 5 states, 4 states have (on average 29.0) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:17:05,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:05,497 INFO L93 Difference]: Finished difference Result 12789 states and 15857 transitions. [2021-12-06 20:17:05,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:17:05,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.0) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 383 [2021-12-06 20:17:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:05,511 INFO L225 Difference]: With dead ends: 12789 [2021-12-06 20:17:05,511 INFO L226 Difference]: Without dead ends: 6582 [2021-12-06 20:17:05,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 819 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:17:05,519 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 2 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:05,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 977 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:17:05,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6582 states. [2021-12-06 20:17:05,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6582 to 6582. [2021-12-06 20:17:05,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6582 states, 5073 states have (on average 1.2188054405677113) internal successors, (6183), 5199 states have internal predecessors, (6183), 969 states have call successors, (969), 539 states have call predecessors, (969), 539 states have return successors, (969), 843 states have call predecessors, (969), 969 states have call successors, (969) [2021-12-06 20:17:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6582 states to 6582 states and 8121 transitions. [2021-12-06 20:17:05,922 INFO L78 Accepts]: Start accepts. Automaton has 6582 states and 8121 transitions. Word has length 383 [2021-12-06 20:17:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:05,922 INFO L470 AbstractCegarLoop]: Abstraction has 6582 states and 8121 transitions. [2021-12-06 20:17:05,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.0) internal successors, (116), 5 states have internal predecessors, (116), 3 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2021-12-06 20:17:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 6582 states and 8121 transitions. [2021-12-06 20:17:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-12-06 20:17:05,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:05,931 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:05,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 20:17:06,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:06,133 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:06,134 INFO L85 PathProgramCache]: Analyzing trace with hash -109671381, now seen corresponding path program 1 times [2021-12-06 20:17:06,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:06,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766091527] [2021-12-06 20:17:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:06,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:06,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:17:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:17:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:17:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:17:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:17:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:17:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:17:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-06 20:17:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:17:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-06 20:17:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:17:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-06 20:17:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-06 20:17:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-06 20:17:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 20:17:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-12-06 20:17:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-06 20:17:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-06 20:17:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-06 20:17:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1034 trivial. 0 not checked. [2021-12-06 20:17:06,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:06,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766091527] [2021-12-06 20:17:06,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766091527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:06,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:06,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:17:06,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421561147] [2021-12-06 20:17:06,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:06,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:17:06,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:17:06,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:17:06,284 INFO L87 Difference]: Start difference. First operand 6582 states and 8121 transitions. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-06 20:17:06,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:06,882 INFO L93 Difference]: Finished difference Result 13125 states and 16176 transitions. [2021-12-06 20:17:06,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:17:06,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 391 [2021-12-06 20:17:06,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:06,895 INFO L225 Difference]: With dead ends: 13125 [2021-12-06 20:17:06,895 INFO L226 Difference]: Without dead ends: 6801 [2021-12-06 20:17:06,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:17:06,902 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 277 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:06,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 498 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:17:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2021-12-06 20:17:07,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 3382. [2021-12-06 20:17:07,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 2634 states have (on average 1.1974183750949128) internal successors, (3154), 2700 states have internal predecessors, (3154), 478 states have call successors, (478), 269 states have call predecessors, (478), 269 states have return successors, (478), 412 states have call predecessors, (478), 478 states have call successors, (478) [2021-12-06 20:17:07,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 4110 transitions. [2021-12-06 20:17:07,183 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 4110 transitions. Word has length 391 [2021-12-06 20:17:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:07,183 INFO L470 AbstractCegarLoop]: Abstraction has 3382 states and 4110 transitions. [2021-12-06 20:17:07,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 5 states have internal predecessors, (112), 5 states have call successors, (25), 3 states have call predecessors, (25), 1 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-12-06 20:17:07,183 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 4110 transitions. [2021-12-06 20:17:07,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-12-06 20:17:07,188 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:07,188 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:07,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-06 20:17:07,189 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:07,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:07,189 INFO L85 PathProgramCache]: Analyzing trace with hash -480077137, now seen corresponding path program 1 times [2021-12-06 20:17:07,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:07,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844518389] [2021-12-06 20:17:07,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:07,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:17:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:17:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:17:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:17:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:17:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:17:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:17:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-06 20:17:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:17:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-06 20:17:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:17:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-06 20:17:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-06 20:17:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2021-12-06 20:17:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 20:17:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-12-06 20:17:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-06 20:17:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2021-12-06 20:17:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-06 20:17:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2021-12-06 20:17:07,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:07,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844518389] [2021-12-06 20:17:07,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844518389] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:07,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230772934] [2021-12-06 20:17:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:07,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:07,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:07,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:07,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 20:17:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:07,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-06 20:17:07,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 504 proven. 222 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-12-06 20:17:08,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:17:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 110 proven. 194 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2021-12-06 20:17:09,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230772934] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:17:09,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:17:09,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 21] total 49 [2021-12-06 20:17:09,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905346369] [2021-12-06 20:17:09,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:17:09,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 20:17:09,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:09,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 20:17:09,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2155, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 20:17:09,353 INFO L87 Difference]: Start difference. First operand 3382 states and 4110 transitions. Second operand has 49 states, 49 states have (on average 7.775510204081633) internal successors, (381), 42 states have internal predecessors, (381), 17 states have call successors, (78), 14 states have call predecessors, (78), 20 states have return successors, (81), 21 states have call predecessors, (81), 17 states have call successors, (81) [2021-12-06 20:17:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:21,333 INFO L93 Difference]: Finished difference Result 12387 states and 15846 transitions. [2021-12-06 20:17:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-12-06 20:17:21,334 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 7.775510204081633) internal successors, (381), 42 states have internal predecessors, (381), 17 states have call successors, (78), 14 states have call predecessors, (78), 20 states have return successors, (81), 21 states have call predecessors, (81), 17 states have call successors, (81) Word has length 391 [2021-12-06 20:17:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:21,351 INFO L225 Difference]: With dead ends: 12387 [2021-12-06 20:17:21,351 INFO L226 Difference]: Without dead ends: 9456 [2021-12-06 20:17:21,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 832 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11076 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2779, Invalid=32377, Unknown=0, NotChecked=0, Total=35156 [2021-12-06 20:17:21,368 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 2739 mSDsluCounter, 20020 mSDsCounter, 0 mSdLazyCounter, 17028 mSolverCounterSat, 1587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2757 SdHoareTripleChecker+Valid, 21167 SdHoareTripleChecker+Invalid, 18615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1587 IncrementalHoareTripleChecker+Valid, 17028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:21,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2757 Valid, 21167 Invalid, 18615 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1587 Valid, 17028 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-12-06 20:17:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9456 states. [2021-12-06 20:17:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9456 to 6611. [2021-12-06 20:17:21,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6611 states, 5129 states have (on average 1.2062780269058295) internal successors, (6187), 5263 states have internal predecessors, (6187), 946 states have call successors, (946), 535 states have call predecessors, (946), 535 states have return successors, (946), 812 states have call predecessors, (946), 946 states have call successors, (946) [2021-12-06 20:17:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 8079 transitions. [2021-12-06 20:17:21,972 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 8079 transitions. Word has length 391 [2021-12-06 20:17:21,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:21,973 INFO L470 AbstractCegarLoop]: Abstraction has 6611 states and 8079 transitions. [2021-12-06 20:17:21,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 7.775510204081633) internal successors, (381), 42 states have internal predecessors, (381), 17 states have call successors, (78), 14 states have call predecessors, (78), 20 states have return successors, (81), 21 states have call predecessors, (81), 17 states have call successors, (81) [2021-12-06 20:17:21,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 8079 transitions. [2021-12-06 20:17:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-12-06 20:17:21,982 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:21,982 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:22,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-06 20:17:22,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-12-06 20:17:22,184 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:22,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1496187316, now seen corresponding path program 1 times [2021-12-06 20:17:22,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:22,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475157408] [2021-12-06 20:17:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:22,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:22,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:22,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:17:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:17:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:17:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:17:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:17:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:17:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:17:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:17:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 20:17:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:17:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-06 20:17:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-12-06 20:17:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-06 20:17:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2021-12-06 20:17:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-06 20:17:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-06 20:17:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2021-12-06 20:17:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2021-12-06 20:17:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-06 20:17:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2021-12-06 20:17:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1084 trivial. 0 not checked. [2021-12-06 20:17:22,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:22,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475157408] [2021-12-06 20:17:22,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475157408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:22,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:22,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:17:22,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247454744] [2021-12-06 20:17:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:22,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:17:22,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:17:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:17:22,341 INFO L87 Difference]: Start difference. First operand 6611 states and 8079 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 20:17:23,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:23,923 INFO L93 Difference]: Finished difference Result 14725 states and 18799 transitions. [2021-12-06 20:17:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 20:17:23,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 402 [2021-12-06 20:17:23,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:23,938 INFO L225 Difference]: With dead ends: 14725 [2021-12-06 20:17:23,938 INFO L226 Difference]: Without dead ends: 8830 [2021-12-06 20:17:23,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:17:23,945 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 529 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 1309 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 2290 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:23,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 2290 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1309 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:17:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8830 states. [2021-12-06 20:17:24,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8830 to 5651. [2021-12-06 20:17:24,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5651 states, 4377 states have (on average 1.2088188256796892) internal successors, (5291), 4511 states have internal predecessors, (5291), 826 states have call successors, (826), 447 states have call predecessors, (826), 447 states have return successors, (826), 692 states have call predecessors, (826), 826 states have call successors, (826) [2021-12-06 20:17:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5651 states to 5651 states and 6943 transitions. [2021-12-06 20:17:24,510 INFO L78 Accepts]: Start accepts. Automaton has 5651 states and 6943 transitions. Word has length 402 [2021-12-06 20:17:24,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:24,511 INFO L470 AbstractCegarLoop]: Abstraction has 5651 states and 6943 transitions. [2021-12-06 20:17:24,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 7 states have internal predecessors, (123), 3 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 20:17:24,511 INFO L276 IsEmpty]: Start isEmpty. Operand 5651 states and 6943 transitions. [2021-12-06 20:17:24,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-12-06 20:17:24,519 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:24,519 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:24,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-06 20:17:24,520 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:24,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1106757805, now seen corresponding path program 1 times [2021-12-06 20:17:24,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:24,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185203848] [2021-12-06 20:17:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:24,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 20:17:24,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:17:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:17:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 20:17:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:17:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 20:17:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-06 20:17:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 20:17:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-06 20:17:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:17:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 20:17:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-12-06 20:17:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:17:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 20:17:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-06 20:17:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-12-06 20:17:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2021-12-06 20:17:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:17:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:17:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2021-12-06 20:17:24,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:24,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185203848] [2021-12-06 20:17:24,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185203848] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:24,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210366216] [2021-12-06 20:17:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:24,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:24,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:24,717 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:24,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 20:17:24,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:24,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 20:17:24,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:25,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 567 proven. 233 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-06 20:17:25,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:17:26,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-12-06 20:17:26,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:17:26,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-12-06 20:17:26,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507610710] [2021-12-06 20:17:26,503 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:17:26,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:17:26,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:26,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:17:26,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2078, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 20:17:26,505 INFO L87 Difference]: Start difference. First operand 5651 states and 6943 transitions. Second operand has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 11 states have internal predecessors, (137), 7 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 20:17:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:31,380 INFO L93 Difference]: Finished difference Result 22402 states and 28780 transitions. [2021-12-06 20:17:31,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-06 20:17:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 11 states have internal predecessors, (137), 7 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 403 [2021-12-06 20:17:31,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:31,406 INFO L225 Difference]: With dead ends: 22402 [2021-12-06 20:17:31,406 INFO L226 Difference]: Without dead ends: 17467 [2021-12-06 20:17:31,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=789, Invalid=7043, Unknown=0, NotChecked=0, Total=7832 [2021-12-06 20:17:31,416 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 1317 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 4513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:31,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1337 Valid, 3641 Invalid, 4513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 20:17:31,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17467 states. [2021-12-06 20:17:32,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17467 to 8521. [2021-12-06 20:17:32,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8521 states, 6575 states have (on average 1.2144486692015208) internal successors, (7985), 6789 states have internal predecessors, (7985), 1265 states have call successors, (1265), 680 states have call predecessors, (1265), 680 states have return successors, (1265), 1051 states have call predecessors, (1265), 1265 states have call successors, (1265) [2021-12-06 20:17:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8521 states to 8521 states and 10515 transitions. [2021-12-06 20:17:32,400 INFO L78 Accepts]: Start accepts. Automaton has 8521 states and 10515 transitions. Word has length 403 [2021-12-06 20:17:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:32,401 INFO L470 AbstractCegarLoop]: Abstraction has 8521 states and 10515 transitions. [2021-12-06 20:17:32,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.416666666666666) internal successors, (137), 11 states have internal predecessors, (137), 7 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 20:17:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 8521 states and 10515 transitions. [2021-12-06 20:17:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-12-06 20:17:32,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:32,410 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:32,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-06 20:17:32,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-06 20:17:32,611 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1579097451, now seen corresponding path program 1 times [2021-12-06 20:17:32,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:32,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313468287] [2021-12-06 20:17:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:32,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 20:17:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:17:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:17:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 20:17:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:17:32,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 20:17:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-06 20:17:32,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 20:17:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-06 20:17:32,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:17:32,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 20:17:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-12-06 20:17:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:17:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 20:17:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-06 20:17:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-12-06 20:17:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2021-12-06 20:17:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:17:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:17:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:32,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-12-06 20:17:32,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:32,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313468287] [2021-12-06 20:17:32,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313468287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:32,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:32,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:17:32,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440396783] [2021-12-06 20:17:32,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:32,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:17:32,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:32,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:17:32,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:17:32,768 INFO L87 Difference]: Start difference. First operand 8521 states and 10515 transitions. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 20:17:33,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:33,809 INFO L93 Difference]: Finished difference Result 16519 states and 20409 transitions. [2021-12-06 20:17:33,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:17:33,810 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 403 [2021-12-06 20:17:33,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:33,823 INFO L225 Difference]: With dead ends: 16519 [2021-12-06 20:17:33,823 INFO L226 Difference]: Without dead ends: 8569 [2021-12-06 20:17:33,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:17:33,830 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 280 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:33,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 454 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:17:33,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8569 states. [2021-12-06 20:17:34,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8569 to 5173. [2021-12-06 20:17:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 4113 states have (on average 1.2149282761974227) internal successors, (4997), 4209 states have internal predecessors, (4997), 675 states have call successors, (675), 384 states have call predecessors, (675), 384 states have return successors, (675), 579 states have call predecessors, (675), 675 states have call successors, (675) [2021-12-06 20:17:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 6347 transitions. [2021-12-06 20:17:34,543 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 6347 transitions. Word has length 403 [2021-12-06 20:17:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:34,543 INFO L470 AbstractCegarLoop]: Abstraction has 5173 states and 6347 transitions. [2021-12-06 20:17:34,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 5 states have internal predecessors, (123), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 20:17:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 6347 transitions. [2021-12-06 20:17:34,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-12-06 20:17:34,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:34,549 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:34,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-06 20:17:34,549 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:34,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash 612314147, now seen corresponding path program 1 times [2021-12-06 20:17:34,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:34,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091325179] [2021-12-06 20:17:34,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:34,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:34,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:34,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 20:17:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 20:17:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-06 20:17:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:17:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 20:17:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:17:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 20:17:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-06 20:17:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 20:17:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-06 20:17:34,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:17:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 20:17:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-12-06 20:17:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:17:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 20:17:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-06 20:17:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-12-06 20:17:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2021-12-06 20:17:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:17:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:17:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-12-06 20:17:34,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:34,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091325179] [2021-12-06 20:17:34,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091325179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:34,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:34,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:17:34,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955969299] [2021-12-06 20:17:34,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:34,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:17:34,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:17:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:17:34,677 INFO L87 Difference]: Start difference. First operand 5173 states and 6347 transitions. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 5 states have internal predecessors, (117), 5 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-12-06 20:17:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:35,567 INFO L93 Difference]: Finished difference Result 9897 states and 12209 transitions. [2021-12-06 20:17:35,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:17:35,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 5 states have internal predecessors, (117), 5 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 403 [2021-12-06 20:17:35,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:35,575 INFO L225 Difference]: With dead ends: 9897 [2021-12-06 20:17:35,575 INFO L226 Difference]: Without dead ends: 5203 [2021-12-06 20:17:35,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:17:35,579 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 364 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:35,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 456 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:17:35,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2021-12-06 20:17:36,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5199. [2021-12-06 20:17:36,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5199 states, 4117 states have (on average 1.214719455914501) internal successors, (5001), 4231 states have internal predecessors, (5001), 697 states have call successors, (697), 384 states have call predecessors, (697), 384 states have return successors, (697), 583 states have call predecessors, (697), 697 states have call successors, (697) [2021-12-06 20:17:36,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5199 states to 5199 states and 6395 transitions. [2021-12-06 20:17:36,284 INFO L78 Accepts]: Start accepts. Automaton has 5199 states and 6395 transitions. Word has length 403 [2021-12-06 20:17:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:36,284 INFO L470 AbstractCegarLoop]: Abstraction has 5199 states and 6395 transitions. [2021-12-06 20:17:36,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 5 states have internal predecessors, (117), 5 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-12-06 20:17:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5199 states and 6395 transitions. [2021-12-06 20:17:36,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2021-12-06 20:17:36,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:36,290 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:36,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-06 20:17:36,290 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:36,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 489032481, now seen corresponding path program 1 times [2021-12-06 20:17:36,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:36,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244969008] [2021-12-06 20:17:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:36,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:36,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-06 20:17:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 20:17:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-06 20:17:36,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:17:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 20:17:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:17:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 20:17:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-06 20:17:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 20:17:36,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-06 20:17:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:17:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 20:17:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-12-06 20:17:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:17:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 20:17:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-06 20:17:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2021-12-06 20:17:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2021-12-06 20:17:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:17:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:17:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2021-12-06 20:17:36,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:36,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244969008] [2021-12-06 20:17:36,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244969008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:36,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190997572] [2021-12-06 20:17:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:36,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:36,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:36,435 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:36,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 20:17:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:36,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1397 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 20:17:36,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 573 proven. 233 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-06 20:17:37,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:17:38,265 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-12-06 20:17:38,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:17:38,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-06 20:17:38,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381365472] [2021-12-06 20:17:38,265 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:17:38,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:17:38,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:38,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:17:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 20:17:38,266 INFO L87 Difference]: Start difference. First operand 5199 states and 6395 transitions. Second operand has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 8 states have internal predecessors, (137), 6 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-06 20:17:41,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:41,439 INFO L93 Difference]: Finished difference Result 15234 states and 18915 transitions. [2021-12-06 20:17:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 20:17:41,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 8 states have internal predecessors, (137), 6 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 403 [2021-12-06 20:17:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:41,453 INFO L225 Difference]: With dead ends: 15234 [2021-12-06 20:17:41,453 INFO L226 Difference]: Without dead ends: 10786 [2021-12-06 20:17:41,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 824 GetRequests, 755 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 904 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=438, Invalid=4532, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 20:17:41,458 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 999 mSDsluCounter, 1481 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 2228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:41,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 2025 Invalid, 2228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 20:17:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10786 states. [2021-12-06 20:17:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10786 to 5173. [2021-12-06 20:17:42,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5173 states, 4113 states have (on average 1.2149282761974227) internal successors, (4997), 4209 states have internal predecessors, (4997), 675 states have call successors, (675), 384 states have call predecessors, (675), 384 states have return successors, (675), 579 states have call predecessors, (675), 675 states have call successors, (675) [2021-12-06 20:17:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 6347 transitions. [2021-12-06 20:17:42,225 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 6347 transitions. Word has length 403 [2021-12-06 20:17:42,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:42,226 INFO L470 AbstractCegarLoop]: Abstraction has 5173 states and 6347 transitions. [2021-12-06 20:17:42,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.222222222222221) internal successors, (137), 8 states have internal predecessors, (137), 6 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-06 20:17:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 6347 transitions. [2021-12-06 20:17:42,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:17:42,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:42,232 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:42,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 20:17:42,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-06 20:17:42,434 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:42,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1101671575, now seen corresponding path program 1 times [2021-12-06 20:17:42,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:42,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548022790] [2021-12-06 20:17:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:42,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:42,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 20:17:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:17:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:17:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 20:17:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:17:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 20:17:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-06 20:17:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 20:17:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-06 20:17:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:17:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-06 20:17:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-12-06 20:17:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:17:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:17:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:17:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:17:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:17:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:17:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:17:42,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 1077 trivial. 0 not checked. [2021-12-06 20:17:42,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:42,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548022790] [2021-12-06 20:17:42,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548022790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:42,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:42,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:17:42,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521265668] [2021-12-06 20:17:42,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:42,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:17:42,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:17:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:17:42,581 INFO L87 Difference]: Start difference. First operand 5173 states and 6347 transitions. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 8 states have internal predecessors, (133), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 20:17:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:45,353 INFO L93 Difference]: Finished difference Result 14260 states and 18326 transitions. [2021-12-06 20:17:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 20:17:45,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 8 states have internal predecessors, (133), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 404 [2021-12-06 20:17:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:45,367 INFO L225 Difference]: With dead ends: 14260 [2021-12-06 20:17:45,367 INFO L226 Difference]: Without dead ends: 9836 [2021-12-06 20:17:45,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 20:17:45,371 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 675 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 2143 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 2959 SdHoareTripleChecker+Invalid, 2452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:45,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 2959 Invalid, 2452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2143 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:17:45,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2021-12-06 20:17:46,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 5038. [2021-12-06 20:17:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5038 states, 4008 states have (on average 1.215319361277445) internal successors, (4871), 4104 states have internal predecessors, (4871), 657 states have call successors, (657), 372 states have call predecessors, (657), 372 states have return successors, (657), 561 states have call predecessors, (657), 657 states have call successors, (657) [2021-12-06 20:17:46,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 6185 transitions. [2021-12-06 20:17:46,129 INFO L78 Accepts]: Start accepts. Automaton has 5038 states and 6185 transitions. Word has length 404 [2021-12-06 20:17:46,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:46,129 INFO L470 AbstractCegarLoop]: Abstraction has 5038 states and 6185 transitions. [2021-12-06 20:17:46,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 8 states have internal predecessors, (133), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 20:17:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5038 states and 6185 transitions. [2021-12-06 20:17:46,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:17:46,134 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:46,135 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:46,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-06 20:17:46,135 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:46,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash -16040739, now seen corresponding path program 1 times [2021-12-06 20:17:46,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:46,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984029783] [2021-12-06 20:17:46,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:46,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:46,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 20:17:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-06 20:17:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:17:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:17:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:17:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:17:46,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:17:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:17:46,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:17:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:17:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:17:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:17:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:17:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:17:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:17:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:17:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:17:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:17:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:17:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2021-12-06 20:17:46,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984029783] [2021-12-06 20:17:46,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984029783] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606491838] [2021-12-06 20:17:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:46,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:46,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:46,328 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:46,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 20:17:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:46,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 20:17:46,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 567 proven. 233 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-06 20:17:47,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:17:48,087 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-12-06 20:17:48,087 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:17:48,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-12-06 20:17:48,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315656090] [2021-12-06 20:17:48,087 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:17:48,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:17:48,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:17:48,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2078, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 20:17:48,088 INFO L87 Difference]: Start difference. First operand 5038 states and 6185 transitions. Second operand has 12 states, 12 states have (on average 11.5) internal successors, (138), 11 states have internal predecessors, (138), 7 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 20:17:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:53,323 INFO L93 Difference]: Finished difference Result 17295 states and 21592 transitions. [2021-12-06 20:17:53,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 20:17:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 11 states have internal predecessors, (138), 7 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 404 [2021-12-06 20:17:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:53,341 INFO L225 Difference]: With dead ends: 17295 [2021-12-06 20:17:53,341 INFO L226 Difference]: Without dead ends: 13006 [2021-12-06 20:17:53,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 761 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=848, Invalid=7342, Unknown=0, NotChecked=0, Total=8190 [2021-12-06 20:17:53,347 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 918 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 3104 SdHoareTripleChecker+Invalid, 3543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:53,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 3104 Invalid, 3543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 3039 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 20:17:53,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13006 states. [2021-12-06 20:17:54,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13006 to 5054. [2021-12-06 20:17:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5054 states, 4016 states have (on average 1.216882470119522) internal successors, (4887), 4112 states have internal predecessors, (4887), 665 states have call successors, (665), 372 states have call predecessors, (665), 372 states have return successors, (665), 569 states have call predecessors, (665), 665 states have call successors, (665) [2021-12-06 20:17:54,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5054 states to 5054 states and 6217 transitions. [2021-12-06 20:17:54,159 INFO L78 Accepts]: Start accepts. Automaton has 5054 states and 6217 transitions. Word has length 404 [2021-12-06 20:17:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:54,159 INFO L470 AbstractCegarLoop]: Abstraction has 5054 states and 6217 transitions. [2021-12-06 20:17:54,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.5) internal successors, (138), 11 states have internal predecessors, (138), 7 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 20:17:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 5054 states and 6217 transitions. [2021-12-06 20:17:54,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:17:54,165 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:54,165 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:54,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-06 20:17:54,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-06 20:17:54,367 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:54,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash 456298907, now seen corresponding path program 1 times [2021-12-06 20:17:54,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:54,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746419810] [2021-12-06 20:17:54,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:54,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:54,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-06 20:17:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-06 20:17:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:17:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:17:54,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:17:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:17:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:17:54,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:17:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:17:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:17:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:17:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:17:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:17:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:17:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:17:54,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:17:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:17:54,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:17:54,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:17:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2021-12-06 20:17:54,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:54,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746419810] [2021-12-06 20:17:54,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746419810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:17:54,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:17:54,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:17:54,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471832308] [2021-12-06 20:17:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:17:54,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:17:54,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:17:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:17:54,525 INFO L87 Difference]: Start difference. First operand 5054 states and 6217 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 20:17:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:17:55,591 INFO L93 Difference]: Finished difference Result 9623 states and 11884 transitions. [2021-12-06 20:17:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:17:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 404 [2021-12-06 20:17:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:17:55,599 INFO L225 Difference]: With dead ends: 9623 [2021-12-06 20:17:55,599 INFO L226 Difference]: Without dead ends: 5074 [2021-12-06 20:17:55,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:17:55,603 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 376 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:17:55,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [396 Valid, 487 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:17:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2021-12-06 20:17:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 5038. [2021-12-06 20:17:56,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5038 states, 4008 states have (on average 1.215319361277445) internal successors, (4871), 4104 states have internal predecessors, (4871), 657 states have call successors, (657), 372 states have call predecessors, (657), 372 states have return successors, (657), 561 states have call predecessors, (657), 657 states have call successors, (657) [2021-12-06 20:17:56,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5038 states to 5038 states and 6185 transitions. [2021-12-06 20:17:56,364 INFO L78 Accepts]: Start accepts. Automaton has 5038 states and 6185 transitions. Word has length 404 [2021-12-06 20:17:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:17:56,364 INFO L470 AbstractCegarLoop]: Abstraction has 5038 states and 6185 transitions. [2021-12-06 20:17:56,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 5 states have internal predecessors, (124), 5 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-12-06 20:17:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5038 states and 6185 transitions. [2021-12-06 20:17:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:17:56,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:17:56,370 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:17:56,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-06 20:17:56,370 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:17:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:17:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash -206911069, now seen corresponding path program 1 times [2021-12-06 20:17:56,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:17:56,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028127809] [2021-12-06 20:17:56,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:56,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:17:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:17:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:17:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:17:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:17:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:17:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:17:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:17:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:17:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:17:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:17:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:17:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:17:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:17:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:17:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:17:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:17:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:17:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:17:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:17:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-06 20:17:56,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:17:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:17:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:17:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:17:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:17:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:17:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:17:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:17:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:17:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:17:56,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:17:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:17:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:17:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:17:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:17:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:17:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:17:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 1064 trivial. 0 not checked. [2021-12-06 20:17:56,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:17:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028127809] [2021-12-06 20:17:56,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028127809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:17:56,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929292377] [2021-12-06 20:17:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:17:56,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:17:56,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:17:56,613 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:17:56,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 20:17:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:17:56,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 20:17:56,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:17:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 567 proven. 229 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-06 20:17:57,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:17:58,507 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-12-06 20:17:58,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:17:58,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-12-06 20:17:58,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508284523] [2021-12-06 20:17:58,508 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:17:58,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:17:58,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:17:58,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:17:58,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2569, Unknown=0, NotChecked=0, Total=2756 [2021-12-06 20:17:58,509 INFO L87 Difference]: Start difference. First operand 5038 states and 6185 transitions. Second operand has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 15 states have internal predecessors, (140), 7 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 20:18:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:11,116 INFO L93 Difference]: Finished difference Result 33482 states and 45044 transitions. [2021-12-06 20:18:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-12-06 20:18:11,117 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 15 states have internal predecessors, (140), 7 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) Word has length 404 [2021-12-06 20:18:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:11,166 INFO L225 Difference]: With dead ends: 33482 [2021-12-06 20:18:11,166 INFO L226 Difference]: Without dead ends: 29193 [2021-12-06 20:18:11,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6322 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2313, Invalid=21867, Unknown=0, NotChecked=0, Total=24180 [2021-12-06 20:18:11,178 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 1885 mSDsluCounter, 4901 mSDsCounter, 0 mSdLazyCounter, 7622 mSolverCounterSat, 1623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 5580 SdHoareTripleChecker+Invalid, 9245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1623 IncrementalHoareTripleChecker+Valid, 7622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:11,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1905 Valid, 5580 Invalid, 9245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1623 Valid, 7622 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 20:18:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29193 states. [2021-12-06 20:18:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29193 to 7323. [2021-12-06 20:18:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7323 states, 5797 states have (on average 1.2216663791616353) internal successors, (7082), 5945 states have internal predecessors, (7082), 993 states have call successors, (993), 532 states have call predecessors, (993), 532 states have return successors, (993), 845 states have call predecessors, (993), 993 states have call successors, (993) [2021-12-06 20:18:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7323 states to 7323 states and 9068 transitions. [2021-12-06 20:18:12,550 INFO L78 Accepts]: Start accepts. Automaton has 7323 states and 9068 transitions. Word has length 404 [2021-12-06 20:18:12,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:12,551 INFO L470 AbstractCegarLoop]: Abstraction has 7323 states and 9068 transitions. [2021-12-06 20:18:12,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.235294117647058) internal successors, (140), 15 states have internal predecessors, (140), 7 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 8 states have call predecessors, (30), 7 states have call successors, (30) [2021-12-06 20:18:12,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7323 states and 9068 transitions. [2021-12-06 20:18:12,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:18:12,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:12,560 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:12,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 20:18:12,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-12-06 20:18:12,762 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:12,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:12,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1710009375, now seen corresponding path program 1 times [2021-12-06 20:18:12,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:12,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118583471] [2021-12-06 20:18:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:12,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:18:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:18:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:18:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:18:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:18:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:18:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:18:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:18:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:18:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:18:12,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:18:12,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:18:12,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:12,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:18:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:18:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:18:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:18:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:18:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-06 20:18:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:18:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:18:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:18:12,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:18:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:18:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:18:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:18:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:18:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:18:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:18:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:18:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:18:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:18:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:18:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:18:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:18:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:18:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1093 trivial. 0 not checked. [2021-12-06 20:18:12,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:12,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118583471] [2021-12-06 20:18:12,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118583471] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:18:12,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:18:12,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:18:12,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062204322] [2021-12-06 20:18:12,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:18:12,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:18:12,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:18:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:18:12,917 INFO L87 Difference]: Start difference. First operand 7323 states and 9068 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-06 20:18:14,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:14,320 INFO L93 Difference]: Finished difference Result 14178 states and 17655 transitions. [2021-12-06 20:18:14,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:18:14,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 404 [2021-12-06 20:18:14,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:14,331 INFO L225 Difference]: With dead ends: 14178 [2021-12-06 20:18:14,331 INFO L226 Difference]: Without dead ends: 7443 [2021-12-06 20:18:14,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:18:14,337 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 385 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:14,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 468 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:18:14,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7443 states. [2021-12-06 20:18:15,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7443 to 7403. [2021-12-06 20:18:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7403 states, 5837 states have (on average 1.2167209182799383) internal successors, (7102), 5985 states have internal predecessors, (7102), 1033 states have call successors, (1033), 532 states have call predecessors, (1033), 532 states have return successors, (1033), 885 states have call predecessors, (1033), 1033 states have call successors, (1033) [2021-12-06 20:18:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7403 states to 7403 states and 9168 transitions. [2021-12-06 20:18:15,557 INFO L78 Accepts]: Start accepts. Automaton has 7403 states and 9168 transitions. Word has length 404 [2021-12-06 20:18:15,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:15,557 INFO L470 AbstractCegarLoop]: Abstraction has 7403 states and 9168 transitions. [2021-12-06 20:18:15,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 5 states have internal predecessors, (128), 5 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-06 20:18:15,557 INFO L276 IsEmpty]: Start isEmpty. Operand 7403 states and 9168 transitions. [2021-12-06 20:18:15,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:18:15,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:15,565 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:15,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-06 20:18:15,565 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:15,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:15,566 INFO L85 PathProgramCache]: Analyzing trace with hash 874203737, now seen corresponding path program 1 times [2021-12-06 20:18:15,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:15,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625268221] [2021-12-06 20:18:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:15,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:18:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:18:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:18:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:18:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:18:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:18:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:18:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:18:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:18:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:18:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:18:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:18:15,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:18:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:18:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:18:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:18:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 20:18:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:18:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:18:15,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:18:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:18:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:18:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:18:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:18:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:18:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:18:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:18:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:18:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:18:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:18:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:18:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:18:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:18:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:18:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:18:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked. [2021-12-06 20:18:15,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625268221] [2021-12-06 20:18:15,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625268221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:18:15,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:18:15,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:18:15,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987937362] [2021-12-06 20:18:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:18:15,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:18:15,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:18:15,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:18:15,686 INFO L87 Difference]: Start difference. First operand 7403 states and 9168 transitions. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 5 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-12-06 20:18:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:17,216 INFO L93 Difference]: Finished difference Result 14338 states and 17837 transitions. [2021-12-06 20:18:17,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:18:17,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 5 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 404 [2021-12-06 20:18:17,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:17,227 INFO L225 Difference]: With dead ends: 14338 [2021-12-06 20:18:17,227 INFO L226 Difference]: Without dead ends: 7446 [2021-12-06 20:18:17,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:18:17,234 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 363 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:17,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 456 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:18:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7446 states. [2021-12-06 20:18:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7446 to 7441. [2021-12-06 20:18:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7441 states, 5842 states have (on average 1.2165354330708662) internal successors, (7107), 6018 states have internal predecessors, (7107), 1066 states have call successors, (1066), 532 states have call predecessors, (1066), 532 states have return successors, (1066), 890 states have call predecessors, (1066), 1066 states have call successors, (1066) [2021-12-06 20:18:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7441 states to 7441 states and 9239 transitions. [2021-12-06 20:18:18,494 INFO L78 Accepts]: Start accepts. Automaton has 7441 states and 9239 transitions. Word has length 404 [2021-12-06 20:18:18,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:18,494 INFO L470 AbstractCegarLoop]: Abstraction has 7441 states and 9239 transitions. [2021-12-06 20:18:18,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 5 states have internal predecessors, (118), 5 states have call successors, (26), 3 states have call predecessors, (26), 1 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-12-06 20:18:18,494 INFO L276 IsEmpty]: Start isEmpty. Operand 7441 states and 9239 transitions. [2021-12-06 20:18:18,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:18:18,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:18,502 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:18,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-06 20:18:18,503 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:18,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:18,503 INFO L85 PathProgramCache]: Analyzing trace with hash 750922071, now seen corresponding path program 1 times [2021-12-06 20:18:18,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:18,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383871410] [2021-12-06 20:18:18,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:18,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:18:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:18:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:18:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:18:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:18:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:18:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:18:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:18:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:18:18,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:18:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:18:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:18:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:18,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:18:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:18:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:18:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:18:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 20:18:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:18:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:18:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:18:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:18:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:18:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:18:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:18:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:18:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:18:18,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:18:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:18:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:18:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:18:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:18:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:18:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:18:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:18:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:18:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 1076 trivial. 0 not checked. [2021-12-06 20:18:18,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:18,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383871410] [2021-12-06 20:18:18,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383871410] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:18:18,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564796416] [2021-12-06 20:18:18,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:18,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:18:18,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:18:18,650 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:18:18,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 20:18:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:18,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 62 conjunts are in the unsatisfiable core [2021-12-06 20:18:18,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:18:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 573 proven. 233 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-12-06 20:18:19,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:18:20,378 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger: modulus not positive [2021-12-06 20:18:20,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:18:20,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-06 20:18:20,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795577463] [2021-12-06 20:18:20,379 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 20:18:20,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:18:20,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:20,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:18:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1811, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 20:18:20,380 INFO L87 Difference]: Start difference. First operand 7441 states and 9239 transitions. Second operand has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 6 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-06 20:18:25,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:25,007 INFO L93 Difference]: Finished difference Result 22967 states and 28797 transitions. [2021-12-06 20:18:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 20:18:25,008 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 6 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 404 [2021-12-06 20:18:25,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:25,029 INFO L225 Difference]: With dead ends: 22967 [2021-12-06 20:18:25,029 INFO L226 Difference]: Without dead ends: 16404 [2021-12-06 20:18:25,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 895 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=438, Invalid=4532, Unknown=0, NotChecked=0, Total=4970 [2021-12-06 20:18:25,037 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 791 mSDsluCounter, 1952 mSDsCounter, 0 mSdLazyCounter, 2213 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 2564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:25,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 2691 Invalid, 2564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 20:18:25,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16404 states. [2021-12-06 20:18:26,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16404 to 7403. [2021-12-06 20:18:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7403 states, 5837 states have (on average 1.2167209182799383) internal successors, (7102), 5985 states have internal predecessors, (7102), 1033 states have call successors, (1033), 532 states have call predecessors, (1033), 532 states have return successors, (1033), 885 states have call predecessors, (1033), 1033 states have call successors, (1033) [2021-12-06 20:18:26,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7403 states to 7403 states and 9168 transitions. [2021-12-06 20:18:26,410 INFO L78 Accepts]: Start accepts. Automaton has 7403 states and 9168 transitions. Word has length 404 [2021-12-06 20:18:26,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:26,410 INFO L470 AbstractCegarLoop]: Abstraction has 7403 states and 9168 transitions. [2021-12-06 20:18:26,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.333333333333334) internal successors, (138), 8 states have internal predecessors, (138), 6 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2021-12-06 20:18:26,411 INFO L276 IsEmpty]: Start isEmpty. Operand 7403 states and 9168 transitions. [2021-12-06 20:18:26,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2021-12-06 20:18:26,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:26,418 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:26,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 20:18:26,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:18:26,620 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1406918181, now seen corresponding path program 1 times [2021-12-06 20:18:26,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:26,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697335326] [2021-12-06 20:18:26,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:26,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:18:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:18:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:18:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:18:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:18:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:18:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:18:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:18:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:18:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:18:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:18:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:18:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:26,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:18:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:18:26,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:18:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:18:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 20:18:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:18:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:18:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:18:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:18:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:18:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:18:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:18:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2021-12-06 20:18:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:18:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-06 20:18:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 20:18:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:18:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:18:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2021-12-06 20:18:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2021-12-06 20:18:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2021-12-06 20:18:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:18:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:18:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 56 proven. 54 refuted. 0 times theorem prover too weak. 1002 trivial. 0 not checked. [2021-12-06 20:18:26,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697335326] [2021-12-06 20:18:26,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697335326] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:18:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199447017] [2021-12-06 20:18:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:26,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:18:26,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:18:26,855 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:18:26,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 20:18:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:26,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1395 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 20:18:26,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:18:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 385 proven. 52 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-12-06 20:18:27,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:18:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 60 proven. 48 refuted. 0 times theorem prover too weak. 1004 trivial. 0 not checked. [2021-12-06 20:18:27,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199447017] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:18:27,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:18:27,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 10] total 33 [2021-12-06 20:18:27,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396597257] [2021-12-06 20:18:27,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:18:27,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 20:18:27,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:27,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 20:18:27,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=971, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 20:18:27,854 INFO L87 Difference]: Start difference. First operand 7403 states and 9168 transitions. Second operand has 33 states, 31 states have (on average 10.580645161290322) internal successors, (328), 28 states have internal predecessors, (328), 9 states have call successors, (75), 7 states have call predecessors, (75), 14 states have return successors, (75), 11 states have call predecessors, (75), 9 states have call successors, (75) [2021-12-06 20:18:46,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:46,494 INFO L93 Difference]: Finished difference Result 47293 states and 60488 transitions. [2021-12-06 20:18:46,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 201 states. [2021-12-06 20:18:46,495 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 10.580645161290322) internal successors, (328), 28 states have internal predecessors, (328), 9 states have call successors, (75), 7 states have call predecessors, (75), 14 states have return successors, (75), 11 states have call predecessors, (75), 9 states have call successors, (75) Word has length 404 [2021-12-06 20:18:46,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:46,565 INFO L225 Difference]: With dead ends: 47293 [2021-12-06 20:18:46,565 INFO L226 Difference]: Without dead ends: 40399 [2021-12-06 20:18:46,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1128 GetRequests, 908 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18389 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3466, Invalid=45596, Unknown=0, NotChecked=0, Total=49062 [2021-12-06 20:18:46,580 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 5173 mSDsluCounter, 15785 mSDsCounter, 0 mSdLazyCounter, 12984 mSolverCounterSat, 2998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5195 SdHoareTripleChecker+Valid, 16772 SdHoareTripleChecker+Invalid, 15982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2998 IncrementalHoareTripleChecker+Valid, 12984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:46,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5195 Valid, 16772 Invalid, 15982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2998 Valid, 12984 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 20:18:46,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40399 states. [2021-12-06 20:18:48,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40399 to 8257. [2021-12-06 20:18:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8257 states, 6520 states have (on average 1.2131901840490797) internal successors, (7910), 6610 states have internal predecessors, (7910), 1152 states have call successors, (1152), 584 states have call predecessors, (1152), 584 states have return successors, (1152), 1062 states have call predecessors, (1152), 1152 states have call successors, (1152) [2021-12-06 20:18:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8257 states to 8257 states and 10214 transitions. [2021-12-06 20:18:48,504 INFO L78 Accepts]: Start accepts. Automaton has 8257 states and 10214 transitions. Word has length 404 [2021-12-06 20:18:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:48,505 INFO L470 AbstractCegarLoop]: Abstraction has 8257 states and 10214 transitions. [2021-12-06 20:18:48,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 10.580645161290322) internal successors, (328), 28 states have internal predecessors, (328), 9 states have call successors, (75), 7 states have call predecessors, (75), 14 states have return successors, (75), 11 states have call predecessors, (75), 9 states have call successors, (75) [2021-12-06 20:18:48,505 INFO L276 IsEmpty]: Start isEmpty. Operand 8257 states and 10214 transitions. [2021-12-06 20:18:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-12-06 20:18:48,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:48,514 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 9, 9, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:18:48,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 20:18:48,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:18:48,715 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:48,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:48,716 INFO L85 PathProgramCache]: Analyzing trace with hash 816537734, now seen corresponding path program 1 times [2021-12-06 20:18:48,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:48,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468448913] [2021-12-06 20:18:48,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:48,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:18:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:18:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:18:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:18:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:18:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:18:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:18:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:18:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:18:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:18:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:18:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:18:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:18:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:18:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:18:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:18:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:18:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:18:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:18:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-06 20:18:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 20:18:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 20:18:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 20:18:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-06 20:18:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:18:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2021-12-06 20:18:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-06 20:18:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:18:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-06 20:18:48,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-06 20:18:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2021-12-06 20:18:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:18:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2021-12-06 20:18:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2021-12-06 20:18:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-12-06 20:18:48,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-06 20:18:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:48,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 140 proven. 128 refuted. 0 times theorem prover too weak. 838 trivial. 0 not checked. [2021-12-06 20:18:48,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:48,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468448913] [2021-12-06 20:18:48,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468448913] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:18:48,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322601344] [2021-12-06 20:18:48,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:48,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:18:48,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:18:48,990 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:18:48,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 20:18:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:49,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1398 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 20:18:49,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:18:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 401 proven. 56 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2021-12-06 20:18:49,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:18:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 55 proven. 34 refuted. 0 times theorem prover too weak. 1017 trivial. 0 not checked. [2021-12-06 20:18:50,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322601344] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:18:50,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:18:50,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 10] total 33 [2021-12-06 20:18:50,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092857946] [2021-12-06 20:18:50,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:18:50,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 20:18:50,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:50,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 20:18:50,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 20:18:50,108 INFO L87 Difference]: Start difference. First operand 8257 states and 10214 transitions. Second operand has 33 states, 31 states have (on average 10.35483870967742) internal successors, (321), 28 states have internal predecessors, (321), 10 states have call successors, (70), 8 states have call predecessors, (70), 15 states have return successors, (69), 11 states have call predecessors, (69), 10 states have call successors, (69) [2021-12-06 20:18:58,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:58,558 INFO L93 Difference]: Finished difference Result 25292 states and 32450 transitions. [2021-12-06 20:18:58,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-12-06 20:18:58,558 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 10.35483870967742) internal successors, (321), 28 states have internal predecessors, (321), 10 states have call successors, (70), 8 states have call predecessors, (70), 15 states have return successors, (69), 11 states have call predecessors, (69), 10 states have call successors, (69) Word has length 405 [2021-12-06 20:18:58,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:58,583 INFO L225 Difference]: With dead ends: 25292 [2021-12-06 20:18:58,583 INFO L226 Difference]: Without dead ends: 17433 [2021-12-06 20:18:58,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 968 GetRequests, 875 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=804, Invalid=7938, Unknown=0, NotChecked=0, Total=8742 [2021-12-06 20:18:58,592 INFO L933 BasicCegarLoop]: 606 mSDtfsCounter, 1609 mSDsluCounter, 9995 mSDsCounter, 0 mSdLazyCounter, 5520 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 10601 SdHoareTripleChecker+Invalid, 6091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 5520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:58,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1647 Valid, 10601 Invalid, 6091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 5520 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 20:18:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17433 states. [2021-12-06 20:19:00,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17433 to 8920. [2021-12-06 20:19:00,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8920 states, 7085 states have (on average 1.2155257586450248) internal successors, (8612), 7175 states have internal predecessors, (8612), 1213 states have call successors, (1213), 621 states have call predecessors, (1213), 621 states have return successors, (1213), 1123 states have call predecessors, (1213), 1213 states have call successors, (1213) [2021-12-06 20:19:00,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8920 states to 8920 states and 11038 transitions. [2021-12-06 20:19:00,523 INFO L78 Accepts]: Start accepts. Automaton has 8920 states and 11038 transitions. Word has length 405 [2021-12-06 20:19:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:00,523 INFO L470 AbstractCegarLoop]: Abstraction has 8920 states and 11038 transitions. [2021-12-06 20:19:00,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 10.35483870967742) internal successors, (321), 28 states have internal predecessors, (321), 10 states have call successors, (70), 8 states have call predecessors, (70), 15 states have return successors, (69), 11 states have call predecessors, (69), 10 states have call successors, (69) [2021-12-06 20:19:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 8920 states and 11038 transitions. [2021-12-06 20:19:00,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-12-06 20:19:00,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:00,533 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:00,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-06 20:19:00,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-12-06 20:19:00,735 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:00,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1159596239, now seen corresponding path program 1 times [2021-12-06 20:19:00,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:00,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425644505] [2021-12-06 20:19:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:00,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:19:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:19:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:19:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:19:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:19:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:19:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:19:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:19:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:19:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:19:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:19:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:19:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:19:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:19:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:19:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:19:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:19:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-06 20:19:00,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 20:19:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 20:19:00,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 20:19:00,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-06 20:19:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:19:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:19:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-06 20:19:00,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-06 20:19:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-06 20:19:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-06 20:19:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-06 20:19:00,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 20:19:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-06 20:19:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-06 20:19:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-12-06 20:19:00,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-06 20:19:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-12-06 20:19:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-12-06 20:19:00,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-12-06 20:19:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2021-12-06 20:19:00,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:00,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425644505] [2021-12-06 20:19:00,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425644505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:00,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325288598] [2021-12-06 20:19:00,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:00,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:00,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:00,969 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:00,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 20:19:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:01,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1486 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 20:19:01,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 544 proven. 23 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2021-12-06 20:19:01,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 1196 trivial. 0 not checked. [2021-12-06 20:19:01,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325288598] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:01,996 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:01,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 25 [2021-12-06 20:19:01,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507088363] [2021-12-06 20:19:01,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:01,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 20:19:01,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:01,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 20:19:01,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:19:01,997 INFO L87 Difference]: Start difference. First operand 8920 states and 11038 transitions. Second operand has 25 states, 25 states have (on average 15.56) internal successors, (389), 24 states have internal predecessors, (389), 15 states have call successors, (90), 6 states have call predecessors, (90), 5 states have return successors, (89), 15 states have call predecessors, (89), 15 states have call successors, (89) [2021-12-06 20:19:36,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:36,228 INFO L93 Difference]: Finished difference Result 72763 states and 92124 transitions. [2021-12-06 20:19:36,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 281 states. [2021-12-06 20:19:36,229 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 15.56) internal successors, (389), 24 states have internal predecessors, (389), 15 states have call successors, (90), 6 states have call predecessors, (90), 5 states have return successors, (89), 15 states have call predecessors, (89), 15 states have call successors, (89) Word has length 431 [2021-12-06 20:19:36,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:36,349 INFO L225 Difference]: With dead ends: 72763 [2021-12-06 20:19:36,350 INFO L226 Difference]: Without dead ends: 64625 [2021-12-06 20:19:36,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1307 GetRequests, 1010 SyntacticMatches, 0 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35489 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=10943, Invalid=78159, Unknown=0, NotChecked=0, Total=89102 [2021-12-06 20:19:36,415 INFO L933 BasicCegarLoop]: 2106 mSDtfsCounter, 3409 mSDsluCounter, 10942 mSDsCounter, 0 mSdLazyCounter, 16664 mSolverCounterSat, 5072 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3469 SdHoareTripleChecker+Valid, 13048 SdHoareTripleChecker+Invalid, 21736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5072 IncrementalHoareTripleChecker+Valid, 16664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:36,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3469 Valid, 13048 Invalid, 21736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5072 Valid, 16664 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-12-06 20:19:36,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64625 states. [2021-12-06 20:19:38,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64625 to 8930. [2021-12-06 20:19:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8930 states, 7090 states have (on average 1.2160789844851905) internal successors, (8622), 7180 states have internal predecessors, (8622), 1218 states have call successors, (1218), 621 states have call predecessors, (1218), 621 states have return successors, (1218), 1128 states have call predecessors, (1218), 1218 states have call successors, (1218) [2021-12-06 20:19:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8930 states to 8930 states and 11058 transitions. [2021-12-06 20:19:38,881 INFO L78 Accepts]: Start accepts. Automaton has 8930 states and 11058 transitions. Word has length 431 [2021-12-06 20:19:38,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:38,881 INFO L470 AbstractCegarLoop]: Abstraction has 8930 states and 11058 transitions. [2021-12-06 20:19:38,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 15.56) internal successors, (389), 24 states have internal predecessors, (389), 15 states have call successors, (90), 6 states have call predecessors, (90), 5 states have return successors, (89), 15 states have call predecessors, (89), 15 states have call successors, (89) [2021-12-06 20:19:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 8930 states and 11058 transitions. [2021-12-06 20:19:38,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-12-06 20:19:38,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:38,892 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:38,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 20:19:39,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-12-06 20:19:39,093 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2014135697, now seen corresponding path program 1 times [2021-12-06 20:19:39,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:39,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370758184] [2021-12-06 20:19:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:39,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:19:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:19:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:19:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:19:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:19:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:19:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:19:39,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:19:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:19:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:19:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:19:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:39,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:19:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:19:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:19:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:19:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:19:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 20:19:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-06 20:19:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 20:19:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 20:19:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 20:19:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-06 20:19:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:19:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:19:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-06 20:19:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-06 20:19:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-06 20:19:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-06 20:19:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-06 20:19:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 20:19:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-06 20:19:39,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-06 20:19:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-12-06 20:19:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-06 20:19:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 399 [2021-12-06 20:19:39,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2021-12-06 20:19:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-12-06 20:19:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1218 trivial. 0 not checked. [2021-12-06 20:19:39,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:39,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370758184] [2021-12-06 20:19:39,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370758184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:39,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:39,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:19:39,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607818905] [2021-12-06 20:19:39,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:39,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:19:39,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:39,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:19:39,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:19:39,221 INFO L87 Difference]: Start difference. First operand 8930 states and 11058 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 5 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-06 20:19:41,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:41,528 INFO L93 Difference]: Finished difference Result 16313 states and 20242 transitions. [2021-12-06 20:19:41,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:19:41,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 5 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) Word has length 431 [2021-12-06 20:19:41,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:41,540 INFO L225 Difference]: With dead ends: 16313 [2021-12-06 20:19:41,540 INFO L226 Difference]: Without dead ends: 7810 [2021-12-06 20:19:41,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:19:41,546 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 375 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:41,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 487 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:19:41,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7810 states. [2021-12-06 20:19:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7810 to 7759. [2021-12-06 20:19:43,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7759 states, 6158 states have (on average 1.2145177005521273) internal successors, (7479), 6239 states have internal predecessors, (7479), 1047 states have call successors, (1047), 553 states have call predecessors, (1047), 553 states have return successors, (1047), 966 states have call predecessors, (1047), 1047 states have call successors, (1047) [2021-12-06 20:19:43,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7759 states to 7759 states and 9573 transitions. [2021-12-06 20:19:43,459 INFO L78 Accepts]: Start accepts. Automaton has 7759 states and 9573 transitions. Word has length 431 [2021-12-06 20:19:43,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:43,459 INFO L470 AbstractCegarLoop]: Abstraction has 7759 states and 9573 transitions. [2021-12-06 20:19:43,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 5 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (29), 5 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-06 20:19:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 7759 states and 9573 transitions. [2021-12-06 20:19:43,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-12-06 20:19:43,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:43,466 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 10, 10, 10, 9, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:43,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-12-06 20:19:43,467 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2027764681, now seen corresponding path program 1 times [2021-12-06 20:19:43,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:43,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136583236] [2021-12-06 20:19:43,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:43,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:19:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:19:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:19:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:19:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:19:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:19:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:19:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:19:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:19:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:19:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:19:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:19:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:19:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:19:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:19:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:19:43,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:19:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 20:19:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-06 20:19:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 20:19:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 20:19:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 20:19:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-06 20:19:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-06 20:19:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-06 20:19:43,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2021-12-06 20:19:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-06 20:19:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-06 20:19:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2021-12-06 20:19:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-06 20:19:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-06 20:19:43,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2021-12-06 20:19:43,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-06 20:19:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2021-12-06 20:19:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 390 [2021-12-06 20:19:43,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-06 20:19:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-06 20:19:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:19:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 22 proven. 29 refuted. 0 times theorem prover too weak. 1178 trivial. 0 not checked. [2021-12-06 20:19:43,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:43,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136583236] [2021-12-06 20:19:43,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136583236] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:19:43,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170537916] [2021-12-06 20:19:43,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:43,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:19:43,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:19:43,717 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:19:43,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 20:19:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:43,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 20:19:43,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:19:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 484 proven. 99 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2021-12-06 20:19:44,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:19:44,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 41 proven. 73 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2021-12-06 20:19:44,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170537916] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:19:44,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:19:44,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 35 [2021-12-06 20:19:44,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337576723] [2021-12-06 20:19:44,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:19:44,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 20:19:44,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:44,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 20:19:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1101, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 20:19:44,895 INFO L87 Difference]: Start difference. First operand 7759 states and 9573 transitions. Second operand has 35 states, 35 states have (on average 9.114285714285714) internal successors, (319), 30 states have internal predecessors, (319), 9 states have call successors, (85), 9 states have call predecessors, (85), 15 states have return successors, (85), 13 states have call predecessors, (85), 9 states have call successors, (85) [2021-12-06 20:21:17,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:17,496 INFO L93 Difference]: Finished difference Result 110716 states and 147908 transitions. [2021-12-06 20:21:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 842 states. [2021-12-06 20:21:17,496 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.114285714285714) internal successors, (319), 30 states have internal predecessors, (319), 9 states have call successors, (85), 9 states have call predecessors, (85), 15 states have return successors, (85), 13 states have call predecessors, (85), 9 states have call successors, (85) Word has length 431 [2021-12-06 20:21:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:17,725 INFO L225 Difference]: With dead ends: 110716 [2021-12-06 20:21:17,725 INFO L226 Difference]: Without dead ends: 103617 [2021-12-06 20:21:17,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1820 GetRequests, 947 SyntacticMatches, 1 SemanticMatches, 872 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349573 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=45091, Invalid=717911, Unknown=0, NotChecked=0, Total=763002 [2021-12-06 20:21:17,794 INFO L933 BasicCegarLoop]: 1175 mSDtfsCounter, 5980 mSDsluCounter, 17353 mSDsCounter, 0 mSdLazyCounter, 42294 mSolverCounterSat, 10671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 18528 SdHoareTripleChecker+Invalid, 52965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10671 IncrementalHoareTripleChecker+Valid, 42294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:17,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5980 Valid, 18528 Invalid, 52965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10671 Valid, 42294 Invalid, 0 Unknown, 0 Unchecked, 19.7s Time] [2021-12-06 20:21:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103617 states. [2021-12-06 20:21:22,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103617 to 11287. [2021-12-06 20:21:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11287 states, 8888 states have (on average 1.2108460846084608) internal successors, (10762), 9030 states have internal predecessors, (10762), 1555 states have call successors, (1555), 843 states have call predecessors, (1555), 843 states have return successors, (1555), 1413 states have call predecessors, (1555), 1555 states have call successors, (1555) [2021-12-06 20:21:22,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11287 states to 11287 states and 13872 transitions. [2021-12-06 20:21:22,072 INFO L78 Accepts]: Start accepts. Automaton has 11287 states and 13872 transitions. Word has length 431 [2021-12-06 20:21:22,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:22,073 INFO L470 AbstractCegarLoop]: Abstraction has 11287 states and 13872 transitions. [2021-12-06 20:21:22,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.114285714285714) internal successors, (319), 30 states have internal predecessors, (319), 9 states have call successors, (85), 9 states have call predecessors, (85), 15 states have return successors, (85), 13 states have call predecessors, (85), 9 states have call successors, (85) [2021-12-06 20:21:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 11287 states and 13872 transitions. [2021-12-06 20:21:22,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-12-06 20:21:22,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:22,081 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 11, 9, 8, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:22,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 20:21:22,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-12-06 20:21:22,283 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:22,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2039814706, now seen corresponding path program 1 times [2021-12-06 20:21:22,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:22,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550720001] [2021-12-06 20:21:22,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:22,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:21:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:21:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:21:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:21:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:21:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:21:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:21:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:21:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:21:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:21:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:21:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:21:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:21:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:21:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:21:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:21:22,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-06 20:21:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:21:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-06 20:21:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-06 20:21:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 20:21:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 20:21:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-06 20:21:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-06 20:21:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2021-12-06 20:21:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-06 20:21:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2021-12-06 20:21:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-06 20:21:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-06 20:21:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-06 20:21:22,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2021-12-06 20:21:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2021-12-06 20:21:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-06 20:21:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:21:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:21:22,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:21:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-06 20:21:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-12-06 20:21:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-12-06 20:21:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 1222 trivial. 0 not checked. [2021-12-06 20:21:22,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:22,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550720001] [2021-12-06 20:21:22,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550720001] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:21:22,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703851964] [2021-12-06 20:21:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:22,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:22,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:21:22,443 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:21:22,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 20:21:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 20:21:22,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:21:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 187 proven. 403 refuted. 0 times theorem prover too weak. 675 trivial. 0 not checked. [2021-12-06 20:21:22,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:21:23,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 23 proven. 33 refuted. 0 times theorem prover too weak. 1209 trivial. 0 not checked. [2021-12-06 20:21:23,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703851964] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:21:23,271 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:21:23,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 20 [2021-12-06 20:21:23,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138305636] [2021-12-06 20:21:23,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:21:23,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 20:21:23,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:23,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 20:21:23,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2021-12-06 20:21:23,273 INFO L87 Difference]: Start difference. First operand 11287 states and 13872 transitions. Second operand has 20 states, 20 states have (on average 16.45) internal successors, (329), 17 states have internal predecessors, (329), 7 states have call successors, (95), 7 states have call predecessors, (95), 9 states have return successors, (94), 9 states have call predecessors, (94), 7 states have call successors, (94) [2021-12-06 20:21:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:48,868 INFO L93 Difference]: Finished difference Result 53299 states and 70402 transitions. [2021-12-06 20:21:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-12-06 20:21:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.45) internal successors, (329), 17 states have internal predecessors, (329), 7 states have call successors, (95), 7 states have call predecessors, (95), 9 states have return successors, (94), 9 states have call predecessors, (94), 7 states have call successors, (94) Word has length 435 [2021-12-06 20:21:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:48,942 INFO L225 Difference]: With dead ends: 53299 [2021-12-06 20:21:48,942 INFO L226 Difference]: Without dead ends: 42736 [2021-12-06 20:21:48,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 971 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2164 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=742, Invalid=6740, Unknown=0, NotChecked=0, Total=7482 [2021-12-06 20:21:48,959 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1708 mSDsluCounter, 7791 mSDsCounter, 0 mSdLazyCounter, 5915 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 8502 SdHoareTripleChecker+Invalid, 6831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 5915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:48,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 8502 Invalid, 6831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 5915 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-06 20:21:48,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42736 states. [2021-12-06 20:21:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42736 to 16834. [2021-12-06 20:21:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16834 states, 13356 states have (on average 1.2026055705300989) internal successors, (16062), 13544 states have internal predecessors, (16062), 2206 states have call successors, (2206), 1271 states have call predecessors, (2206), 1271 states have return successors, (2206), 2018 states have call predecessors, (2206), 2206 states have call successors, (2206) [2021-12-06 20:21:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16834 states to 16834 states and 20474 transitions. [2021-12-06 20:21:54,877 INFO L78 Accepts]: Start accepts. Automaton has 16834 states and 20474 transitions. Word has length 435 [2021-12-06 20:21:54,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:54,878 INFO L470 AbstractCegarLoop]: Abstraction has 16834 states and 20474 transitions. [2021-12-06 20:21:54,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.45) internal successors, (329), 17 states have internal predecessors, (329), 7 states have call successors, (95), 7 states have call predecessors, (95), 9 states have return successors, (94), 9 states have call predecessors, (94), 7 states have call successors, (94) [2021-12-06 20:21:54,878 INFO L276 IsEmpty]: Start isEmpty. Operand 16834 states and 20474 transitions. [2021-12-06 20:21:54,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2021-12-06 20:21:54,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:54,887 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:54,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-06 20:21:55,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-12-06 20:21:55,089 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:55,090 INFO L85 PathProgramCache]: Analyzing trace with hash -699420882, now seen corresponding path program 1 times [2021-12-06 20:21:55,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:55,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878824627] [2021-12-06 20:21:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:55,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:21:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:21:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:21:55,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:21:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:21:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:21:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:21:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:21:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:21:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:21:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:21:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:21:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:21:55,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:21:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:21:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:21:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:21:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:21:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:21:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:21:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:21:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:21:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:21:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:21:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:21:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:21:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:21:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:21:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 20:21:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:21:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 20:21:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-06 20:21:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:21:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 373 [2021-12-06 20:21:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 378 [2021-12-06 20:21:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 387 [2021-12-06 20:21:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 397 [2021-12-06 20:21:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-12-06 20:21:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 416 [2021-12-06 20:21:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 424 [2021-12-06 20:21:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2021-12-06 20:21:55,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:55,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878824627] [2021-12-06 20:21:55,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878824627] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:21:55,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552841487] [2021-12-06 20:21:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:55,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:55,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:21:55,257 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:21:55,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 20:21:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:55,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 1516 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 20:21:55,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:21:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1306 backedges. 358 proven. 0 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2021-12-06 20:21:55,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:21:55,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552841487] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:55,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:21:55,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-06 20:21:55,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802855708] [2021-12-06 20:21:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:55,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:21:55,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:55,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:21:55,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:21:55,630 INFO L87 Difference]: Start difference. First operand 16834 states and 20474 transitions. Second operand has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 8 states have internal predecessors, (160), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 20:22:10,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:10,879 INFO L93 Difference]: Finished difference Result 41055 states and 51712 transitions. [2021-12-06 20:22:10,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 20:22:10,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 8 states have internal predecessors, (160), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 439 [2021-12-06 20:22:10,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:10,929 INFO L225 Difference]: With dead ends: 41055 [2021-12-06 20:22:10,929 INFO L226 Difference]: Without dead ends: 29933 [2021-12-06 20:22:10,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:22:10,943 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 939 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 3394 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:10,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [951 Valid, 3394 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1282 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 20:22:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29933 states. [2021-12-06 20:22:16,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29933 to 16760. [2021-12-06 20:22:16,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16760 states, 13300 states have (on average 1.2009022556390978) internal successors, (15972), 13484 states have internal predecessors, (15972), 2192 states have call successors, (2192), 1267 states have call predecessors, (2192), 1267 states have return successors, (2192), 2008 states have call predecessors, (2192), 2192 states have call successors, (2192) [2021-12-06 20:22:16,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16760 states to 16760 states and 20356 transitions. [2021-12-06 20:22:16,785 INFO L78 Accepts]: Start accepts. Automaton has 16760 states and 20356 transitions. Word has length 439 [2021-12-06 20:22:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:16,785 INFO L470 AbstractCegarLoop]: Abstraction has 16760 states and 20356 transitions. [2021-12-06 20:22:16,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.77777777777778) internal successors, (160), 8 states have internal predecessors, (160), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 20:22:16,785 INFO L276 IsEmpty]: Start isEmpty. Operand 16760 states and 20356 transitions. [2021-12-06 20:22:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-12-06 20:22:16,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:16,795 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 20:22:16,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 20:22:16,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:22:16,996 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:22:16,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash 609967372, now seen corresponding path program 1 times [2021-12-06 20:22:16,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:16,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594170561] [2021-12-06 20:22:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:16,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:17,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:22:17,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:22:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:22:17,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:22:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:22:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:22:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:22:17,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:22:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:22:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:22:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:22:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:22:17,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:22:17,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:22:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:22:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:22:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:22:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:22:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:22:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:22:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:22:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:22:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:22:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:22:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:22:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:22:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:22:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:22:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 20:22:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:22:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 20:22:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-06 20:22:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:22:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-06 20:22:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:22:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:22:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:22:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-06 20:22:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:22:17,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-06 20:22:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2021-12-06 20:22:17,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:17,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594170561] [2021-12-06 20:22:17,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594170561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:17,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:17,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:22:17,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510266086] [2021-12-06 20:22:17,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:17,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:22:17,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:17,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:22:17,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:22:17,161 INFO L87 Difference]: Start difference. First operand 16760 states and 20356 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 8 states have internal predecessors, (138), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 20:22:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:33,679 INFO L93 Difference]: Finished difference Result 47339 states and 59172 transitions. [2021-12-06 20:22:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 20:22:33,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 8 states have internal predecessors, (138), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 441 [2021-12-06 20:22:33,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:33,731 INFO L225 Difference]: With dead ends: 47339 [2021-12-06 20:22:33,731 INFO L226 Difference]: Without dead ends: 31203 [2021-12-06 20:22:33,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:22:33,747 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 997 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 2445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:33,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 3271 Invalid, 2445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 20:22:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31203 states. [2021-12-06 20:22:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31203 to 16613. [2021-12-06 20:22:39,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16613 states, 13186 states have (on average 1.1962687699074777) internal successors, (15774), 13366 states have internal predecessors, (15774), 2163 states have call successors, (2163), 1263 states have call predecessors, (2163), 1263 states have return successors, (2163), 1983 states have call predecessors, (2163), 2163 states have call successors, (2163) [2021-12-06 20:22:39,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16613 states to 16613 states and 20100 transitions. [2021-12-06 20:22:39,545 INFO L78 Accepts]: Start accepts. Automaton has 16613 states and 20100 transitions. Word has length 441 [2021-12-06 20:22:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:39,546 INFO L470 AbstractCegarLoop]: Abstraction has 16613 states and 20100 transitions. [2021-12-06 20:22:39,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 8 states have internal predecessors, (138), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 20:22:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16613 states and 20100 transitions. [2021-12-06 20:22:39,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-12-06 20:22:39,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:39,555 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 20:22:39,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-12-06 20:22:39,555 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:22:39,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:39,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1574268918, now seen corresponding path program 1 times [2021-12-06 20:22:39,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:39,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732961115] [2021-12-06 20:22:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:39,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:22:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:22:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:22:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:22:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:22:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:22:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:22:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:22:39,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:22:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:22:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:22:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:22:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:22:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:22:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:22:39,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:22:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:22:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:22:39,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:22:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:22:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:22:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:22:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:22:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:22:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:22:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:22:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:22:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:22:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 20:22:39,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:22:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 20:22:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-06 20:22:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:22:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-06 20:22:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:22:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:22:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:22:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-06 20:22:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:22:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-06 20:22:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:39,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 1275 trivial. 0 not checked. [2021-12-06 20:22:39,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:39,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732961115] [2021-12-06 20:22:39,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732961115] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:39,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:39,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:22:39,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535795703] [2021-12-06 20:22:39,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:39,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:22:39,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:39,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:22:39,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:22:39,667 INFO L87 Difference]: Start difference. First operand 16613 states and 20100 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 20:22:47,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:47,823 INFO L93 Difference]: Finished difference Result 31441 states and 38098 transitions. [2021-12-06 20:22:47,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:22:47,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 441 [2021-12-06 20:22:47,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:47,853 INFO L225 Difference]: With dead ends: 31441 [2021-12-06 20:22:47,853 INFO L226 Difference]: Without dead ends: 20608 [2021-12-06 20:22:47,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:22:47,864 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 183 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:47,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 761 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:22:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20608 states. [2021-12-06 20:22:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20608 to 16613. [2021-12-06 20:22:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16613 states, 13186 states have (on average 1.1939936296071592) internal successors, (15744), 13366 states have internal predecessors, (15744), 2163 states have call successors, (2163), 1263 states have call predecessors, (2163), 1263 states have return successors, (2163), 1983 states have call predecessors, (2163), 2163 states have call successors, (2163) [2021-12-06 20:22:53,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16613 states to 16613 states and 20070 transitions. [2021-12-06 20:22:53,613 INFO L78 Accepts]: Start accepts. Automaton has 16613 states and 20070 transitions. Word has length 441 [2021-12-06 20:22:53,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:53,614 INFO L470 AbstractCegarLoop]: Abstraction has 16613 states and 20070 transitions. [2021-12-06 20:22:53,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (31), 3 states have call predecessors, (31), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 20:22:53,614 INFO L276 IsEmpty]: Start isEmpty. Operand 16613 states and 20070 transitions. [2021-12-06 20:22:53,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-12-06 20:22:53,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:53,623 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 12, 12, 12, 9, 8, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:22:53,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-12-06 20:22:53,623 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:22:53,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:53,624 INFO L85 PathProgramCache]: Analyzing trace with hash 627066294, now seen corresponding path program 1 times [2021-12-06 20:22:53,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:53,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78391157] [2021-12-06 20:22:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:53,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:22:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:22:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:22:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:22:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:22:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:22:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:22:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:22:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:22:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:22:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:22:53,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:22:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:22:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:22:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:22:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:22:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:22:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:22:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-06 20:22:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 20:22:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-06 20:22:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-06 20:22:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-12-06 20:22:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-06 20:22:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-12-06 20:22:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-06 20:22:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-06 20:22:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-12-06 20:22:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2021-12-06 20:22:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-06 20:22:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-06 20:22:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-06 20:22:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2021-12-06 20:22:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 375 [2021-12-06 20:22:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 380 [2021-12-06 20:22:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2021-12-06 20:22:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:22:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 406 [2021-12-06 20:22:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2021-12-06 20:22:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2021-12-06 20:22:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2021-12-06 20:22:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1331 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2021-12-06 20:22:53,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:53,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78391157] [2021-12-06 20:22:53,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78391157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:22:53,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:22:53,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:22:53,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810684631] [2021-12-06 20:22:53,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:22:53,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:22:53,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:53,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:22:53,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:22:53,781 INFO L87 Difference]: Start difference. First operand 16613 states and 20070 transitions. Second operand has 9 states, 9 states have (on average 16.0) internal successors, (144), 7 states have internal predecessors, (144), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 20:23:03,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:03,108 INFO L93 Difference]: Finished difference Result 31574 states and 38911 transitions. [2021-12-06 20:23:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 20:23:03,109 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.0) internal successors, (144), 7 states have internal predecessors, (144), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 443 [2021-12-06 20:23:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:03,141 INFO L225 Difference]: With dead ends: 31574 [2021-12-06 20:23:03,141 INFO L226 Difference]: Without dead ends: 20752 [2021-12-06 20:23:03,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:23:03,156 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 428 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:03,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1766 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:23:03,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20752 states. [2021-12-06 20:23:08,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20752 to 16607. [2021-12-06 20:23:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16607 states, 13182 states have (on average 1.1926869974207253) internal successors, (15722), 13361 states have internal predecessors, (15722), 2162 states have call successors, (2162), 1262 states have call predecessors, (2162), 1262 states have return successors, (2162), 1983 states have call predecessors, (2162), 2162 states have call successors, (2162) [2021-12-06 20:23:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16607 states to 16607 states and 20046 transitions. [2021-12-06 20:23:08,821 INFO L78 Accepts]: Start accepts. Automaton has 16607 states and 20046 transitions. Word has length 443 [2021-12-06 20:23:08,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:08,821 INFO L470 AbstractCegarLoop]: Abstraction has 16607 states and 20046 transitions. [2021-12-06 20:23:08,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.0) internal successors, (144), 7 states have internal predecessors, (144), 3 states have call successors, (33), 3 states have call predecessors, (33), 2 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2021-12-06 20:23:08,821 INFO L276 IsEmpty]: Start isEmpty. Operand 16607 states and 20046 transitions. [2021-12-06 20:23:08,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-12-06 20:23:08,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:08,830 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 20:23:08,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-12-06 20:23:08,830 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:23:08,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1224718958, now seen corresponding path program 1 times [2021-12-06 20:23:08,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:08,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878583925] [2021-12-06 20:23:08,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:08,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:23:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:23:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:23:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:23:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:23:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:23:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:23:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:23:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:23:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:23:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:23:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:23:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:23:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:23:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:23:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:23:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:23:08,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:23:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:23:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:23:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:23:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:23:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:23:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:23:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:23:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:23:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:23:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:23:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:23:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 20:23:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:23:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 20:23:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-06 20:23:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:23:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-06 20:23:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:23:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:23:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:23:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-06 20:23:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:23:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-06 20:23:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:08,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2021-12-06 20:23:08,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:23:08,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878583925] [2021-12-06 20:23:08,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878583925] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:23:08,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138814850] [2021-12-06 20:23:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:08,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:23:08,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:23:08,958 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:23:08,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 20:23:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:09,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 20:23:09,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:23:09,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 948 trivial. 0 not checked. [2021-12-06 20:23:09,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:23:09,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138814850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:23:09,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:23:09,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-06 20:23:09,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144801642] [2021-12-06 20:23:09,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:23:09,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:23:09,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:23:09,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:23:09,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:23:09,341 INFO L87 Difference]: Start difference. First operand 16607 states and 20046 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 20:23:21,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:21,052 INFO L93 Difference]: Finished difference Result 36103 states and 44639 transitions. [2021-12-06 20:23:21,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:23:21,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 442 [2021-12-06 20:23:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:21,095 INFO L225 Difference]: With dead ends: 36103 [2021-12-06 20:23:21,095 INFO L226 Difference]: Without dead ends: 24989 [2021-12-06 20:23:21,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:23:21,108 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 692 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:21,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 3142 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 20:23:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24989 states. [2021-12-06 20:23:26,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24989 to 16577. [2021-12-06 20:23:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16577 states, 13162 states have (on average 1.1907005014435497) internal successors, (15672), 13341 states have internal predecessors, (15672), 2152 states have call successors, (2152), 1262 states have call predecessors, (2152), 1262 states have return successors, (2152), 1973 states have call predecessors, (2152), 2152 states have call successors, (2152) [2021-12-06 20:23:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16577 states to 16577 states and 19976 transitions. [2021-12-06 20:23:26,913 INFO L78 Accepts]: Start accepts. Automaton has 16577 states and 19976 transitions. Word has length 442 [2021-12-06 20:23:26,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:26,913 INFO L470 AbstractCegarLoop]: Abstraction has 16577 states and 19976 transitions. [2021-12-06 20:23:26,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 8 states have internal predecessors, (163), 3 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-06 20:23:26,914 INFO L276 IsEmpty]: Start isEmpty. Operand 16577 states and 19976 transitions. [2021-12-06 20:23:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-12-06 20:23:26,922 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:26,923 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 20:23:26,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 20:23:27,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:23:27,124 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:23:27,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1076103632, now seen corresponding path program 1 times [2021-12-06 20:23:27,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:27,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340826376] [2021-12-06 20:23:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:27,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:23:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:23:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:23:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:23:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:23:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:23:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:23:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:23:27,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:23:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:23:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:23:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:23:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:23:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:23:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:23:27,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:23:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:23:27,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:23:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:23:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:23:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:23:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:23:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:23:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:23:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:23:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:23:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:23:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:23:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:23:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 20:23:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:23:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 20:23:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-06 20:23:27,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:23:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-06 20:23:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:23:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:23:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:23:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-06 20:23:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:23:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-06 20:23:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 1255 trivial. 0 not checked. [2021-12-06 20:23:27,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:23:27,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340826376] [2021-12-06 20:23:27,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340826376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:23:27,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:23:27,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:23:27,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950505229] [2021-12-06 20:23:27,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:23:27,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:23:27,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:23:27,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:23:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:23:27,295 INFO L87 Difference]: Start difference. First operand 16577 states and 19976 transitions. Second operand has 10 states, 10 states have (on average 13.9) internal successors, (139), 8 states have internal predecessors, (139), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 20:23:40,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:40,875 INFO L93 Difference]: Finished difference Result 37398 states and 46305 transitions. [2021-12-06 20:23:40,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 20:23:40,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 8 states have internal predecessors, (139), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 442 [2021-12-06 20:23:40,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:40,920 INFO L225 Difference]: With dead ends: 37398 [2021-12-06 20:23:40,920 INFO L226 Difference]: Without dead ends: 26524 [2021-12-06 20:23:40,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-12-06 20:23:40,933 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 771 mSDsluCounter, 2371 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:40,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 2834 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:23:40,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26524 states. [2021-12-06 20:23:46,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26524 to 16533. [2021-12-06 20:23:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16533 states, 13118 states have (on average 1.189815520658637) internal successors, (15608), 13297 states have internal predecessors, (15608), 2152 states have call successors, (2152), 1262 states have call predecessors, (2152), 1262 states have return successors, (2152), 1973 states have call predecessors, (2152), 2152 states have call successors, (2152) [2021-12-06 20:23:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16533 states to 16533 states and 19912 transitions. [2021-12-06 20:23:46,814 INFO L78 Accepts]: Start accepts. Automaton has 16533 states and 19912 transitions. Word has length 442 [2021-12-06 20:23:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:46,814 INFO L470 AbstractCegarLoop]: Abstraction has 16533 states and 19912 transitions. [2021-12-06 20:23:46,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 8 states have internal predecessors, (139), 3 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-06 20:23:46,815 INFO L276 IsEmpty]: Start isEmpty. Operand 16533 states and 19912 transitions. [2021-12-06 20:23:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-12-06 20:23:46,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:46,824 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 20:23:46,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-12-06 20:23:46,824 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:23:46,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 683076622, now seen corresponding path program 1 times [2021-12-06 20:23:46,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:46,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353103841] [2021-12-06 20:23:46,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:46,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:23:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:23:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:23:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:23:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:23:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:23:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:23:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:23:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:23:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:23:46,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:23:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:23:46,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:23:46,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:23:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:23:46,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:23:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:23:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:23:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:23:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:23:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:23:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:23:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:23:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:23:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:23:46,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:23:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:23:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:23:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:23:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 20:23:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:23:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 20:23:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-06 20:23:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:23:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-06 20:23:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:23:46,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:23:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:23:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-06 20:23:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:23:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-06 20:23:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:46,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2021-12-06 20:23:46,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:23:46,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353103841] [2021-12-06 20:23:46,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353103841] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:23:46,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:23:46,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:23:46,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797777899] [2021-12-06 20:23:46,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:23:46,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:23:46,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:23:46,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:23:46,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:23:46,942 INFO L87 Difference]: Start difference. First operand 16533 states and 19912 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 20:23:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:54,099 INFO L93 Difference]: Finished difference Result 29415 states and 36087 transitions. [2021-12-06 20:23:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:23:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 442 [2021-12-06 20:23:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:54,126 INFO L225 Difference]: With dead ends: 29415 [2021-12-06 20:23:54,126 INFO L226 Difference]: Without dead ends: 18585 [2021-12-06 20:23:54,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:23:54,136 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 135 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:54,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 1034 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:23:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18585 states. [2021-12-06 20:23:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18585 to 16405. [2021-12-06 20:23:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16405 states, 13014 states have (on average 1.1868756723528509) internal successors, (15446), 13195 states have internal predecessors, (15446), 2138 states have call successors, (2138), 1252 states have call predecessors, (2138), 1252 states have return successors, (2138), 1957 states have call predecessors, (2138), 2138 states have call successors, (2138) [2021-12-06 20:23:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16405 states to 16405 states and 19722 transitions. [2021-12-06 20:23:59,887 INFO L78 Accepts]: Start accepts. Automaton has 16405 states and 19722 transitions. Word has length 442 [2021-12-06 20:23:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:59,888 INFO L470 AbstractCegarLoop]: Abstraction has 16405 states and 19722 transitions. [2021-12-06 20:23:59,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 4 states have internal predecessors, (127), 4 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-06 20:23:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 16405 states and 19722 transitions. [2021-12-06 20:23:59,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2021-12-06 20:23:59,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:59,897 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 10, 10, 9, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 20:23:59,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-12-06 20:23:59,897 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:23:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1293524089, now seen corresponding path program 1 times [2021-12-06 20:23:59,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:59,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179388008] [2021-12-06 20:23:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:59,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:23:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:23:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:23:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:23:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:23:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:23:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:23:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:23:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:23:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:23:59,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:23:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:23:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:23:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:59,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:24:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:24:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:24:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:24:00,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 20:24:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 20:24:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 20:24:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-06 20:24:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 20:24:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 20:24:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 20:24:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-06 20:24:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-06 20:24:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2021-12-06 20:24:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-06 20:24:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2021-12-06 20:24:00,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2021-12-06 20:24:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-06 20:24:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 20:24:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-06 20:24:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 20:24:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 374 [2021-12-06 20:24:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 20:24:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 388 [2021-12-06 20:24:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2021-12-06 20:24:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2021-12-06 20:24:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:24:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2021-12-06 20:24:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 68 proven. 55 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2021-12-06 20:24:00,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179388008] [2021-12-06 20:24:00,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179388008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:24:00,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555333886] [2021-12-06 20:24:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:00,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:00,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:00,099 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:00,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 20:24:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:00,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 20:24:00,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 561 proven. 94 refuted. 0 times theorem prover too weak. 650 trivial. 0 not checked. [2021-12-06 20:24:00,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:24:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1305 backedges. 76 proven. 58 refuted. 0 times theorem prover too weak. 1171 trivial. 0 not checked. [2021-12-06 20:24:01,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555333886] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:24:01,150 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:24:01,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 22 [2021-12-06 20:24:01,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444212449] [2021-12-06 20:24:01,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:24:01,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 20:24:01,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:01,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 20:24:01,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2021-12-06 20:24:01,152 INFO L87 Difference]: Start difference. First operand 16405 states and 19722 transitions. Second operand has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 18 states have internal predecessors, (239), 4 states have call successors, (63), 9 states have call predecessors, (63), 15 states have return successors, (58), 7 states have call predecessors, (58), 4 states have call successors, (58) [2021-12-06 20:24:19,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:19,185 INFO L93 Difference]: Finished difference Result 50603 states and 61924 transitions. [2021-12-06 20:24:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 20:24:19,186 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 18 states have internal predecessors, (239), 4 states have call successors, (63), 9 states have call predecessors, (63), 15 states have return successors, (58), 7 states have call predecessors, (58), 4 states have call successors, (58) Word has length 442 [2021-12-06 20:24:19,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:19,250 INFO L225 Difference]: With dead ends: 50603 [2021-12-06 20:24:19,250 INFO L226 Difference]: Without dead ends: 39145 [2021-12-06 20:24:19,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1044 GetRequests, 980 SyntacticMatches, 4 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=629, Invalid=3153, Unknown=0, NotChecked=0, Total=3782 [2021-12-06 20:24:19,267 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 1168 mSDsluCounter, 6319 mSDsCounter, 0 mSdLazyCounter, 4127 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 6909 SdHoareTripleChecker+Invalid, 4790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 4127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:19,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1193 Valid, 6909 Invalid, 4790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 4127 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 20:24:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39145 states. [2021-12-06 20:24:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39145 to 25367. [2021-12-06 20:24:28,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25367 states, 19808 states have (on average 1.1755856219709209) internal successors, (23286), 20143 states have internal predecessors, (23286), 3475 states have call successors, (3475), 2083 states have call predecessors, (3475), 2083 states have return successors, (3475), 3140 states have call predecessors, (3475), 3475 states have call successors, (3475) [2021-12-06 20:24:28,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25367 states to 25367 states and 30236 transitions. [2021-12-06 20:24:28,826 INFO L78 Accepts]: Start accepts. Automaton has 25367 states and 30236 transitions. Word has length 442 [2021-12-06 20:24:28,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:28,827 INFO L470 AbstractCegarLoop]: Abstraction has 25367 states and 30236 transitions. [2021-12-06 20:24:28,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.863636363636363) internal successors, (239), 18 states have internal predecessors, (239), 4 states have call successors, (63), 9 states have call predecessors, (63), 15 states have return successors, (58), 7 states have call predecessors, (58), 4 states have call successors, (58) [2021-12-06 20:24:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 25367 states and 30236 transitions. [2021-12-06 20:24:28,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-12-06 20:24:28,840 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:28,841 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 10, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:24:28,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 20:24:29,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-12-06 20:24:29,042 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:29,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1689746499, now seen corresponding path program 1 times [2021-12-06 20:24:29,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:29,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132317752] [2021-12-06 20:24:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:29,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:24:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:24:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:24:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:24:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:24:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:24:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:24:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:24:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:24:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:24:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:24:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:24:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:24:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:24:29,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:24:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:24:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:24:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:24:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:24:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:24:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 20:24:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 20:24:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-06 20:24:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-06 20:24:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-06 20:24:29,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-06 20:24:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:24:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-06 20:24:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-06 20:24:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-06 20:24:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-06 20:24:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-12-06 20:24:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 20:24:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:24:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-06 20:24:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-12-06 20:24:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-12-06 20:24:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-12-06 20:24:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-06 20:24:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-12-06 20:24:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:24:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2021-12-06 20:24:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2021-12-06 20:24:29,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:24:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132317752] [2021-12-06 20:24:29,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132317752] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:24:29,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92680156] [2021-12-06 20:24:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:29,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:29,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:29,295 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:24:29,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 20:24:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:29,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 20:24:29,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:30,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 551 proven. 88 refuted. 0 times theorem prover too weak. 665 trivial. 0 not checked. [2021-12-06 20:24:30,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:24:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2021-12-06 20:24:30,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92680156] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:24:30,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:24:30,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 14] total 36 [2021-12-06 20:24:30,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469305636] [2021-12-06 20:24:30,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:24:30,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-06 20:24:30,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:24:30,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-06 20:24:30,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 20:24:30,565 INFO L87 Difference]: Start difference. First operand 25367 states and 30236 transitions. Second operand has 36 states, 36 states have (on average 11.583333333333334) internal successors, (417), 33 states have internal predecessors, (417), 14 states have call successors, (92), 6 states have call predecessors, (92), 8 states have return successors, (92), 16 states have call predecessors, (92), 14 states have call successors, (92) [2021-12-06 20:27:15,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:15,939 INFO L93 Difference]: Finished difference Result 272265 states and 344029 transitions. [2021-12-06 20:27:15,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 570 states. [2021-12-06 20:27:15,939 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 11.583333333333334) internal successors, (417), 33 states have internal predecessors, (417), 14 states have call successors, (92), 6 states have call predecessors, (92), 8 states have return successors, (92), 16 states have call predecessors, (92), 14 states have call successors, (92) Word has length 443 [2021-12-06 20:27:15,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:16,538 INFO L225 Difference]: With dead ends: 272265 [2021-12-06 20:27:16,538 INFO L226 Difference]: Without dead ends: 255203 [2021-12-06 20:27:16,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1575 GetRequests, 979 SyntacticMatches, 0 SemanticMatches, 596 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153869 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=33358, Invalid=323648, Unknown=0, NotChecked=0, Total=357006 [2021-12-06 20:27:16,630 INFO L933 BasicCegarLoop]: 2199 mSDtfsCounter, 3396 mSDsluCounter, 25050 mSDsCounter, 0 mSdLazyCounter, 38740 mSolverCounterSat, 5798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 27249 SdHoareTripleChecker+Invalid, 44538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5798 IncrementalHoareTripleChecker+Valid, 38740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:16,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3433 Valid, 27249 Invalid, 44538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5798 Valid, 38740 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2021-12-06 20:27:16,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255203 states. [2021-12-06 20:27:28,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255203 to 25275. [2021-12-06 20:27:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25275 states, 19762 states have (on average 1.1759943325574334) internal successors, (23240), 20097 states have internal predecessors, (23240), 3429 states have call successors, (3429), 2083 states have call predecessors, (3429), 2083 states have return successors, (3429), 3094 states have call predecessors, (3429), 3429 states have call successors, (3429) [2021-12-06 20:27:29,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25275 states to 25275 states and 30098 transitions. [2021-12-06 20:27:29,043 INFO L78 Accepts]: Start accepts. Automaton has 25275 states and 30098 transitions. Word has length 443 [2021-12-06 20:27:29,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:29,044 INFO L470 AbstractCegarLoop]: Abstraction has 25275 states and 30098 transitions. [2021-12-06 20:27:29,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 11.583333333333334) internal successors, (417), 33 states have internal predecessors, (417), 14 states have call successors, (92), 6 states have call predecessors, (92), 8 states have return successors, (92), 16 states have call predecessors, (92), 14 states have call successors, (92) [2021-12-06 20:27:29,044 INFO L276 IsEmpty]: Start isEmpty. Operand 25275 states and 30098 transitions. [2021-12-06 20:27:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2021-12-06 20:27:29,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:29,058 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 10, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:29,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 20:27:29,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:29,260 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:29,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:29,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1935554373, now seen corresponding path program 1 times [2021-12-06 20:27:29,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:29,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867602783] [2021-12-06 20:27:29,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:29,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:27:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:27:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:27:29,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:27:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:27:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:27:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:27:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:27:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-06 20:27:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:27:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:27:29,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:27:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:27:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 20:27:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:27:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:27:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-06 20:27:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 20:27:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-06 20:27:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 20:27:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 20:27:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-06 20:27:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-06 20:27:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-06 20:27:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-06 20:27:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 20:27:29,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-06 20:27:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2021-12-06 20:27:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-06 20:27:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2021-12-06 20:27:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2021-12-06 20:27:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 20:27:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-06 20:27:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-06 20:27:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2021-12-06 20:27:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 382 [2021-12-06 20:27:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2021-12-06 20:27:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2021-12-06 20:27:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2021-12-06 20:27:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 20:27:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 427 [2021-12-06 20:27:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 1256 trivial. 0 not checked. [2021-12-06 20:27:29,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:29,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867602783] [2021-12-06 20:27:29,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867602783] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:27:29,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728701704] [2021-12-06 20:27:29,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:29,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:27:29,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:29,621 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:27:29,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d082a78-0e3f-4c33-a3d0-fd4554ef4c19/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 20:27:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 20:27:29,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:30,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 505 proven. 60 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2021-12-06 20:27:30,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:27:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 46 proven. 21 refuted. 0 times theorem prover too weak. 1237 trivial. 0 not checked. [2021-12-06 20:27:30,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728701704] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:27:30,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:27:30,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 9] total 37 [2021-12-06 20:27:30,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996258386] [2021-12-06 20:27:30,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:27:30,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 20:27:30,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:30,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 20:27:30,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 20:27:30,712 INFO L87 Difference]: Start difference. First operand 25275 states and 30098 transitions. Second operand has 37 states, 35 states have (on average 10.2) internal successors, (357), 33 states have internal predecessors, (357), 14 states have call successors, (91), 7 states have call predecessors, (91), 10 states have return successors, (92), 14 states have call predecessors, (92), 14 states have call successors, (92)