./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/shared_mem1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/shared_mem1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:08:11,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:08:11,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:08:11,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:08:11,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:08:11,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:08:11,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:08:11,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:08:11,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:08:11,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:08:11,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:08:11,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:08:11,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:08:11,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:08:11,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:08:11,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:08:11,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:08:11,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:08:11,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:08:11,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:08:11,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:08:11,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:08:11,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:08:11,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:08:11,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:08:11,475 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:08:11,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:08:11,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:08:11,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:08:11,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:08:11,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:08:11,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:08:11,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:08:11,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:08:11,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:08:11,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:08:11,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:08:11,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:08:11,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:08:11,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:08:11,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:08:11,503 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:08:11,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:08:11,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:08:11,560 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:08:11,560 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:08:11,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:08:11,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:08:11,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:08:11,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:08:11,567 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:08:11,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:08:11,568 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:08:11,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:08:11,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:08:11,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:08:11,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:08:11,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:08:11,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:08:11,570 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:08:11,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:08:11,570 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:08:11,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:08:11,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:08:11,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:08:11,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:08:11,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:08:11,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:08:11,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:08:11,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:08:11,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:08:11,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:08:11,575 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:08:11,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:08:11,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:08:11,576 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:08:11,576 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_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f [2021-11-20 06:08:11,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:08:11,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:08:11,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:08:11,892 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:08:11,893 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:08:11,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/heap-data/shared_mem1.i [2021-11-20 06:08:11,970 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/data/a04f9f972/bab60bde60744ea7b367aee9be2924a8/FLAG149e92588 [2021-11-20 06:08:12,476 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:08:12,481 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/sv-benchmarks/c/heap-data/shared_mem1.i [2021-11-20 06:08:12,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/data/a04f9f972/bab60bde60744ea7b367aee9be2924a8/FLAG149e92588 [2021-11-20 06:08:12,774 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/data/a04f9f972/bab60bde60744ea7b367aee9be2924a8 [2021-11-20 06:08:12,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:08:12,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:08:12,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:08:12,780 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:08:12,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:08:12,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:08:12" (1/1) ... [2021-11-20 06:08:12,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d34f604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:12, skipping insertion in model container [2021-11-20 06:08:12,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:08:12" (1/1) ... [2021-11-20 06:08:12,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:08:12,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:08:13,142 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_e142153d-a137-4ed1-949a-d620b6fecd31/sv-benchmarks/c/heap-data/shared_mem1.i[23879,23892] [2021-11-20 06:08:13,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:08:13,155 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:08:13,236 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_e142153d-a137-4ed1-949a-d620b6fecd31/sv-benchmarks/c/heap-data/shared_mem1.i[23879,23892] [2021-11-20 06:08:13,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:08:13,273 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:08:13,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13 WrapperNode [2021-11-20 06:08:13,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:08:13,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:08:13,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:08:13,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:08:13,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,355 INFO L137 Inliner]: procedures = 121, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2021-11-20 06:08:13,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:08:13,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:08:13,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:08:13,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:08:13,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:08:13,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:08:13,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:08:13,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:08:13,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (1/1) ... [2021-11-20 06:08:13,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:08:13,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:13,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:08:13,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:08:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:08:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:08:13,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:08:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:08:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:08:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:08:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:08:13,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:08:13,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:08:13,593 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:08:13,596 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:08:13,927 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:08:13,933 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:08:13,933 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 06:08:13,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:08:13 BoogieIcfgContainer [2021-11-20 06:08:13,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:08:13,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:08:13,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:08:13,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:08:13,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:08:12" (1/3) ... [2021-11-20 06:08:13,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba346ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:08:13, skipping insertion in model container [2021-11-20 06:08:13,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:08:13" (2/3) ... [2021-11-20 06:08:13,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba346ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:08:13, skipping insertion in model container [2021-11-20 06:08:13,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:08:13" (3/3) ... [2021-11-20 06:08:13,945 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem1.i [2021-11-20 06:08:13,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:08:13,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:08:14,000 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:08:14,008 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:08:14,008 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:08:14,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:14,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 06:08:14,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:14,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:14,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:14,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:14,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1650103796, now seen corresponding path program 1 times [2021-11-20 06:08:14,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504440530] [2021-11-20 06:08:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:14,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:14,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:14,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504440530] [2021-11-20 06:08:14,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504440530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:14,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:14,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:08:14,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963973873] [2021-11-20 06:08:14,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:14,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:08:14,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:08:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:08:14,278 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:14,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:14,293 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-11-20 06:08:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:08:14,295 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-20 06:08:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:14,326 INFO L225 Difference]: With dead ends: 27 [2021-11-20 06:08:14,326 INFO L226 Difference]: Without dead ends: 13 [2021-11-20 06:08:14,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:08:14,334 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:14,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:08:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-20 06:08:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-20 06:08:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:14,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-11-20 06:08:14,364 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2021-11-20 06:08:14,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:14,365 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-11-20 06:08:14,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-11-20 06:08:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:08:14,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:14,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:14,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:08:14,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:14,368 INFO L85 PathProgramCache]: Analyzing trace with hash -812668617, now seen corresponding path program 1 times [2021-11-20 06:08:14,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:14,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320462940] [2021-11-20 06:08:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:14,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:14,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:14,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320462940] [2021-11-20 06:08:14,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320462940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:14,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:14,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 06:08:14,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941425130] [2021-11-20 06:08:14,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:14,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:08:14,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:14,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:08:14,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:08:14,851 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:15,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:15,094 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-11-20 06:08:15,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:08:15,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:08:15,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:15,097 INFO L225 Difference]: With dead ends: 29 [2021-11-20 06:08:15,097 INFO L226 Difference]: Without dead ends: 27 [2021-11-20 06:08:15,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:08:15,099 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:15,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:08:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-20 06:08:15,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-11-20 06:08:15,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-11-20 06:08:15,108 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2021-11-20 06:08:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:15,108 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-11-20 06:08:15,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-11-20 06:08:15,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 06:08:15,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:15,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:15,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:08:15,110 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:15,111 INFO L85 PathProgramCache]: Analyzing trace with hash -812666695, now seen corresponding path program 1 times [2021-11-20 06:08:15,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:15,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348938108] [2021-11-20 06:08:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:15,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:15,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:15,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:15,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348938108] [2021-11-20 06:08:15,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348938108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:08:15,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:08:15,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:08:15,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787613314] [2021-11-20 06:08:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:08:15,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:08:15,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:08:15,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:08:15,359 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:15,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:15,565 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-11-20 06:08:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:08:15,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-20 06:08:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:15,566 INFO L225 Difference]: With dead ends: 31 [2021-11-20 06:08:15,567 INFO L226 Difference]: Without dead ends: 24 [2021-11-20 06:08:15,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:08:15,569 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:15,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:08:15,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-20 06:08:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-20 06:08:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:15,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-11-20 06:08:15,575 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2021-11-20 06:08:15,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:15,576 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-11-20 06:08:15,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:15,576 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-11-20 06:08:15,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:08:15,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:15,577 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:15,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:08:15,578 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:15,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:15,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1760681901, now seen corresponding path program 1 times [2021-11-20 06:08:15,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:15,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082457131] [2021-11-20 06:08:15,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:15,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:15,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:15,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082457131] [2021-11-20 06:08:15,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082457131] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:15,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471150677] [2021-11-20 06:08:15,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:15,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:15,988 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:16,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:08:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:16,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:08:16,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:16,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:16,264 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 06:08:16,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 06:08:16,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:16,297 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-11-20 06:08:16,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 06:08:16,373 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:08:16,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-20 06:08:16,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:16,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:16,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:16,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:16,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:17,391 INFO L354 Elim1Store]: treesize reduction 539, result has 8.2 percent of original size [2021-11-20 06:08:17,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 262 treesize of output 257 [2021-11-20 06:08:17,596 INFO L354 Elim1Store]: treesize reduction 278, result has 9.2 percent of original size [2021-11-20 06:08:17,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 313 treesize of output 292 [2021-11-20 06:08:17,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:17,773 INFO L354 Elim1Store]: treesize reduction 821, result has 7.4 percent of original size [2021-11-20 06:08:17,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 264 treesize of output 241 [2021-11-20 06:08:17,866 INFO L354 Elim1Store]: treesize reduction 254, result has 15.3 percent of original size [2021-11-20 06:08:17,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 268 treesize of output 230 [2021-11-20 06:08:17,891 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-11-20 06:08:17,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 206 treesize of output 214 [2021-11-20 06:08:22,172 INFO L354 Elim1Store]: treesize reduction 312, result has 5.2 percent of original size [2021-11-20 06:08:22,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 631 treesize of output 413 [2021-11-20 06:08:22,268 INFO L354 Elim1Store]: treesize reduction 293, result has 6.4 percent of original size [2021-11-20 06:08:22,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 358 treesize of output 173 [2021-11-20 06:08:22,320 INFO L354 Elim1Store]: treesize reduction 18, result has 60.9 percent of original size [2021-11-20 06:08:22,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 124 [2021-11-20 06:08:23,027 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:08:23,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 79 [2021-11-20 06:08:23,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:23,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:23,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471150677] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:23,751 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:08:23,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2021-11-20 06:08:23,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543545607] [2021-11-20 06:08:23,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:23,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 06:08:23,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:23,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 06:08:23,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-11-20 06:08:23,754 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:25,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:25,469 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2021-11-20 06:08:25,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 06:08:25,470 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:08:25,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:25,471 INFO L225 Difference]: With dead ends: 40 [2021-11-20 06:08:25,471 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 06:08:25,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:08:25,474 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 46 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:25,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 115 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 0 Unknown, 102 Unchecked, 0.2s Time] [2021-11-20 06:08:25,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 06:08:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2021-11-20 06:08:25,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:25,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-11-20 06:08:25,480 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 14 [2021-11-20 06:08:25,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:25,481 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-11-20 06:08:25,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:25,481 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-11-20 06:08:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:08:25,482 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:25,482 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:25,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:25,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-20 06:08:25,716 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1760679979, now seen corresponding path program 1 times [2021-11-20 06:08:25,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:25,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748215915] [2021-11-20 06:08:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:25,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:25,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:25,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:25,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748215915] [2021-11-20 06:08:25,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748215915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:25,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667620137] [2021-11-20 06:08:25,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:25,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:25,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:25,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:25,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:08:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:26,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-20 06:08:26,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:26,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:26,088 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 06:08:26,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 06:08:26,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:26,111 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-11-20 06:08:26,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 06:08:26,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:26,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:26,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:26,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:26,183 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:08:26,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 06:08:26,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:26,763 INFO L354 Elim1Store]: treesize reduction 539, result has 8.2 percent of original size [2021-11-20 06:08:26,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 236 treesize of output 231 [2021-11-20 06:08:26,951 INFO L354 Elim1Store]: treesize reduction 266, result has 9.5 percent of original size [2021-11-20 06:08:26,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 287 treesize of output 266 [2021-11-20 06:08:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:27,109 INFO L354 Elim1Store]: treesize reduction 821, result has 7.4 percent of original size [2021-11-20 06:08:27,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 238 treesize of output 215 [2021-11-20 06:08:27,165 INFO L354 Elim1Store]: treesize reduction 210, result has 14.6 percent of original size [2021-11-20 06:08:27,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 242 treesize of output 194 [2021-11-20 06:08:27,202 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-20 06:08:27,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 167 treesize of output 175 [2021-11-20 06:08:28,214 INFO L354 Elim1Store]: treesize reduction 312, result has 5.2 percent of original size [2021-11-20 06:08:28,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 491 treesize of output 321 [2021-11-20 06:08:28,291 INFO L354 Elim1Store]: treesize reduction 293, result has 6.4 percent of original size [2021-11-20 06:08:28,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 266 treesize of output 135 [2021-11-20 06:08:28,323 INFO L354 Elim1Store]: treesize reduction 39, result has 15.2 percent of original size [2021-11-20 06:08:28,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 74 [2021-11-20 06:08:28,391 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:08:28,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 28 [2021-11-20 06:08:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:28,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:28,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667620137] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:28,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:08:28,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2021-11-20 06:08:28,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904113722] [2021-11-20 06:08:28,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:28,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:08:28,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:28,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:08:28,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:08:28,832 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:29,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:29,532 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2021-11-20 06:08:29,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:08:29,532 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:08:29,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:29,535 INFO L225 Difference]: With dead ends: 50 [2021-11-20 06:08:29,535 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 06:08:29,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2021-11-20 06:08:29,539 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 55 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:29,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 103 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 54 Invalid, 0 Unknown, 64 Unchecked, 0.2s Time] [2021-11-20 06:08:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 06:08:29,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2021-11-20 06:08:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.4) internal successors, (49), 35 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:29,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 49 transitions. [2021-11-20 06:08:29,563 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 49 transitions. Word has length 14 [2021-11-20 06:08:29,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:29,563 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 49 transitions. [2021-11-20 06:08:29,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 49 transitions. [2021-11-20 06:08:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 06:08:29,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:29,566 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:29,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:29,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:29,795 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:29,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1758834859, now seen corresponding path program 1 times [2021-11-20 06:08:29,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:29,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322497629] [2021-11-20 06:08:29,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:29,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:29,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:29,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322497629] [2021-11-20 06:08:29,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322497629] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:29,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686469531] [2021-11-20 06:08:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:29,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:29,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:29,989 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:30,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:08:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:30,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-20 06:08:30,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:30,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:30,090 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 06:08:30,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 06:08:30,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:30,111 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-11-20 06:08:30,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 06:08:30,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:30,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:30,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:30,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:30,177 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:08:30,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 06:08:30,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:30,494 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-20 06:08:30,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 279 treesize of output 246 [2021-11-20 06:08:30,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:30,634 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-11-20 06:08:30,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 264 treesize of output 243 [2021-11-20 06:08:30,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:30,856 INFO L354 Elim1Store]: treesize reduction 334, result has 10.9 percent of original size [2021-11-20 06:08:30,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 249 treesize of output 231 [2021-11-20 06:08:30,941 INFO L354 Elim1Store]: treesize reduction 422, result has 9.8 percent of original size [2021-11-20 06:08:30,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 294 treesize of output 273 [2021-11-20 06:08:30,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:31,034 INFO L354 Elim1Store]: treesize reduction 466, result has 10.2 percent of original size [2021-11-20 06:08:31,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 254 treesize of output 212 [2021-11-20 06:08:31,093 INFO L354 Elim1Store]: treesize reduction 552, result has 11.5 percent of original size [2021-11-20 06:08:31,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 312 treesize of output 264 [2021-11-20 06:08:31,109 INFO L354 Elim1Store]: treesize reduction 34, result has 53.4 percent of original size [2021-11-20 06:08:31,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 237 treesize of output 245 [2021-11-20 06:08:31,782 INFO L354 Elim1Store]: treesize reduction 161, result has 4.7 percent of original size [2021-11-20 06:08:31,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 243 treesize of output 122 [2021-11-20 06:08:31,805 INFO L354 Elim1Store]: treesize reduction 97, result has 7.6 percent of original size [2021-11-20 06:08:31,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 83 [2021-11-20 06:08:31,812 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:08:31,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 57 [2021-11-20 06:08:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:31,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:32,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:32,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686469531] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:32,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:08:32,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2021-11-20 06:08:32,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065432678] [2021-11-20 06:08:32,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:32,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 06:08:32,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:32,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 06:08:32,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:08:32,266 INFO L87 Difference]: Start difference. First operand 36 states and 49 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:32,686 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2021-11-20 06:08:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:08:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-20 06:08:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:32,687 INFO L225 Difference]: With dead ends: 53 [2021-11-20 06:08:32,687 INFO L226 Difference]: Without dead ends: 43 [2021-11-20 06:08:32,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-11-20 06:08:32,688 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 37 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:32,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 123 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 91 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2021-11-20 06:08:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-20 06:08:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-11-20 06:08:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 37 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 50 transitions. [2021-11-20 06:08:32,696 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 50 transitions. Word has length 14 [2021-11-20 06:08:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:32,696 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 50 transitions. [2021-11-20 06:08:32,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 50 transitions. [2021-11-20 06:08:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:08:32,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:32,697 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:32,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:32,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:32,907 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash 187961508, now seen corresponding path program 1 times [2021-11-20 06:08:32,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:32,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760928490] [2021-11-20 06:08:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:32,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:33,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:33,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760928490] [2021-11-20 06:08:33,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760928490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:33,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175707952] [2021-11-20 06:08:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:33,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:33,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:33,211 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:33,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:08:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:33,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 06:08:33,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:33,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:33,305 INFO L354 Elim1Store]: treesize reduction 67, result has 9.5 percent of original size [2021-11-20 06:08:33,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 78 [2021-11-20 06:08:33,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:33,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 78 [2021-11-20 06:08:33,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:33,331 INFO L354 Elim1Store]: treesize reduction 71, result has 15.5 percent of original size [2021-11-20 06:08:33,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 68 [2021-11-20 06:08:33,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2021-11-20 06:08:33,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:33,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 58 [2021-11-20 06:08:33,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:33,513 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 06:08:33,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 141 [2021-11-20 06:08:33,526 INFO L354 Elim1Store]: treesize reduction 75, result has 8.5 percent of original size [2021-11-20 06:08:33,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 151 treesize of output 108 [2021-11-20 06:08:33,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:33,551 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 06:08:33,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 93 [2021-11-20 06:08:33,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:08:33,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 50 [2021-11-20 06:08:33,686 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-20 06:08:33,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 23 [2021-11-20 06:08:33,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:44,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175707952] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:44,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:08:44,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 7] total 19 [2021-11-20 06:08:44,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112591755] [2021-11-20 06:08:44,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:44,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 06:08:44,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 06:08:44,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=284, Unknown=5, NotChecked=0, Total=342 [2021-11-20 06:08:44,945 INFO L87 Difference]: Start difference. First operand 38 states and 50 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:46,000 INFO L93 Difference]: Finished difference Result 83 states and 109 transitions. [2021-11-20 06:08:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:08:46,001 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:08:46,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:46,002 INFO L225 Difference]: With dead ends: 83 [2021-11-20 06:08:46,002 INFO L226 Difference]: Without dead ends: 76 [2021-11-20 06:08:46,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=215, Invalid=772, Unknown=5, NotChecked=0, Total=992 [2021-11-20 06:08:46,004 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 113 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:46,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 149 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 195 Invalid, 0 Unknown, 42 Unchecked, 0.4s Time] [2021-11-20 06:08:46,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-20 06:08:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2021-11-20 06:08:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 62 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2021-11-20 06:08:46,015 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 16 [2021-11-20 06:08:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:46,015 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2021-11-20 06:08:46,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2021-11-20 06:08:46,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 06:08:46,016 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:46,016 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:46,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:46,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:46,223 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 189810472, now seen corresponding path program 1 times [2021-11-20 06:08:46,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:46,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315411611] [2021-11-20 06:08:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:46,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:46,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:46,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315411611] [2021-11-20 06:08:46,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315411611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:46,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544538460] [2021-11-20 06:08:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:46,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:46,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:46,549 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:46,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:08:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:46,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-20 06:08:46,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:46,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:46,627 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 06:08:46,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 06:08:46,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:46,642 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-11-20 06:08:46,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 06:08:46,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-20 06:08:46,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:46,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:46,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:46,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:46,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:46,863 INFO L354 Elim1Store]: treesize reduction 104, result has 15.4 percent of original size [2021-11-20 06:08:46,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 192 treesize of output 143 [2021-11-20 06:08:46,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:46,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 92 [2021-11-20 06:08:46,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 59 [2021-11-20 06:08:47,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:08:47,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 81 [2021-11-20 06:08:47,138 INFO L354 Elim1Store]: treesize reduction 108, result has 9.2 percent of original size [2021-11-20 06:08:47,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 75 treesize of output 53 [2021-11-20 06:08:47,144 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:08:47,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 37 [2021-11-20 06:08:47,193 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:08:47,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 28 [2021-11-20 06:08:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:47,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:08:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:08:49,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544538460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:08:49,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:08:49,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 9] total 20 [2021-11-20 06:08:49,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232906299] [2021-11-20 06:08:49,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:08:49,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:08:49,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:08:49,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:08:49,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=288, Unknown=1, NotChecked=0, Total=380 [2021-11-20 06:08:49,554 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:08:50,248 INFO L93 Difference]: Finished difference Result 81 states and 107 transitions. [2021-11-20 06:08:50,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:08:50,251 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-20 06:08:50,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:08:50,252 INFO L225 Difference]: With dead ends: 81 [2021-11-20 06:08:50,252 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 06:08:50,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=199, Invalid=502, Unknown=1, NotChecked=0, Total=702 [2021-11-20 06:08:50,254 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 06:08:50,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 115 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 140 Invalid, 0 Unknown, 44 Unchecked, 0.4s Time] [2021-11-20 06:08:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 06:08:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-20 06:08:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-11-20 06:08:50,262 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 16 [2021-11-20 06:08:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:08:50,262 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-11-20 06:08:50,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.95) internal successors, (39), 20 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:08:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2021-11-20 06:08:50,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 06:08:50,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:08:50,266 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:08:50,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:08:50,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:50,487 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:08:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:08:50,487 INFO L85 PathProgramCache]: Analyzing trace with hash -319487049, now seen corresponding path program 2 times [2021-11-20 06:08:50,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:08:50,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129151502] [2021-11-20 06:08:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:08:50,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:08:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:08:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-20 06:08:50,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:08:50,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129151502] [2021-11-20 06:08:50,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129151502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:08:50,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115770703] [2021-11-20 06:08:50,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:08:50,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:08:50,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:08:50,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:08:50,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 06:08:50,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:08:50,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:08:50,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-20 06:08:50,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:08:50,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:50,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:50,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:50,929 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-20 06:08:50,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 38 [2021-11-20 06:08:50,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:50,936 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 06:08:50,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2021-11-20 06:08:50,964 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:08:50,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2021-11-20 06:08:50,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:50,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:08:51,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:51,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:51,509 INFO L354 Elim1Store]: treesize reduction 493, result has 8.9 percent of original size [2021-11-20 06:08:51,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 243 treesize of output 238 [2021-11-20 06:08:51,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:51,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:51,687 INFO L354 Elim1Store]: treesize reduction 691, result has 8.7 percent of original size [2021-11-20 06:08:51,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 291 treesize of output 280 [2021-11-20 06:08:51,746 INFO L354 Elim1Store]: treesize reduction 358, result has 8.7 percent of original size [2021-11-20 06:08:51,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 306 treesize of output 273 [2021-11-20 06:08:51,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:51,788 INFO L354 Elim1Store]: treesize reduction 188, result has 16.1 percent of original size [2021-11-20 06:08:51,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 255 treesize of output 207 [2021-11-20 06:08:51,815 INFO L354 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2021-11-20 06:08:51,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 180 treesize of output 197 [2021-11-20 06:08:52,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:52,821 INFO L354 Elim1Store]: treesize reduction 1217, result has 6.3 percent of original size [2021-11-20 06:08:52,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 363 treesize of output 354 [2021-11-20 06:08:52,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:08:53,240 INFO L354 Elim1Store]: treesize reduction 1399, result has 6.0 percent of original size [2021-11-20 06:08:53,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 390 treesize of output 342 [2021-11-20 06:08:53,306 INFO L354 Elim1Store]: treesize reduction 358, result has 8.7 percent of original size [2021-11-20 06:08:53,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 374 treesize of output 341 [2021-11-20 06:08:53,391 INFO L354 Elim1Store]: treesize reduction 260, result has 12.2 percent of original size [2021-11-20 06:08:53,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 323 treesize of output 275 [2021-11-20 06:08:53,425 INFO L354 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2021-11-20 06:08:53,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 264 [2021-11-20 06:09:16,821 INFO L354 Elim1Store]: treesize reduction 339, result has 4.0 percent of original size [2021-11-20 06:09:16,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 563 treesize of output 289 [2021-11-20 06:09:16,867 INFO L354 Elim1Store]: treesize reduction 247, result has 3.9 percent of original size [2021-11-20 06:09:16,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 249 treesize of output 137 [2021-11-20 06:09:16,903 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-20 06:09:16,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 92 treesize of output 87 [2021-11-20 06:09:17,067 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:09:17,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 46 [2021-11-20 06:09:17,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:17,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:09:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:25,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115770703] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:09:25,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:09:25,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-20 06:09:25,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660197109] [2021-11-20 06:09:25,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:09:25,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 06:09:25,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:25,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 06:09:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=301, Unknown=2, NotChecked=0, Total=380 [2021-11-20 06:09:25,240 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:28,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:28,480 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2021-11-20 06:09:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 06:09:28,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-20 06:09:28,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:28,482 INFO L225 Difference]: With dead ends: 50 [2021-11-20 06:09:28,482 INFO L226 Difference]: Without dead ends: 48 [2021-11-20 06:09:28,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=179, Invalid=631, Unknown=2, NotChecked=0, Total=812 [2021-11-20 06:09:28,483 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:28,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 151 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 86 Unchecked, 0.2s Time] [2021-11-20 06:09:28,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-20 06:09:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2021-11-20 06:09:28,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:28,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2021-11-20 06:09:28,491 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 17 [2021-11-20 06:09:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:28,491 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2021-11-20 06:09:28,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2021-11-20 06:09:28,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:09:28,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:28,492 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:09:28,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-20 06:09:28,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:09:28,711 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:28,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:28,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2098222328, now seen corresponding path program 1 times [2021-11-20 06:09:28,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:28,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079218341] [2021-11-20 06:09:28,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:28,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:29,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:29,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:29,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079218341] [2021-11-20 06:09:29,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079218341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:09:29,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86706857] [2021-11-20 06:09:29,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:29,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:09:29,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:09:29,006 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:09:29,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-20 06:09:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:29,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-20 06:09:29,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:09:29,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,099 INFO L354 Elim1Store]: treesize reduction 50, result has 32.4 percent of original size [2021-11-20 06:09:29,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 51 [2021-11-20 06:09:29,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,116 INFO L354 Elim1Store]: treesize reduction 37, result has 31.5 percent of original size [2021-11-20 06:09:29,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 48 [2021-11-20 06:09:29,145 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:09:29,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 06:09:29,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:09:29,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:09:29,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,338 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:09:29,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 252 treesize of output 231 [2021-11-20 06:09:29,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:09:29,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 237 treesize of output 204 [2021-11-20 06:09:29,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,410 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-11-20 06:09:29,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 183 [2021-11-20 06:09:29,477 INFO L354 Elim1Store]: treesize reduction 230, result has 10.5 percent of original size [2021-11-20 06:09:29,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 264 treesize of output 247 [2021-11-20 06:09:29,504 INFO L354 Elim1Store]: treesize reduction 107, result has 15.1 percent of original size [2021-11-20 06:09:29,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 228 treesize of output 201 [2021-11-20 06:09:29,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,531 INFO L354 Elim1Store]: treesize reduction 64, result has 26.4 percent of original size [2021-11-20 06:09:29,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 195 treesize of output 156 [2021-11-20 06:09:29,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,548 INFO L354 Elim1Store]: treesize reduction 95, result has 16.7 percent of original size [2021-11-20 06:09:29,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 156 treesize of output 143 [2021-11-20 06:09:29,565 INFO L354 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2021-11-20 06:09:29,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 145 [2021-11-20 06:09:29,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,925 INFO L354 Elim1Store]: treesize reduction 212, result has 13.5 percent of original size [2021-11-20 06:09:29,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 277 treesize of output 189 [2021-11-20 06:09:29,941 INFO L354 Elim1Store]: treesize reduction 75, result has 8.5 percent of original size [2021-11-20 06:09:29,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 232 treesize of output 189 [2021-11-20 06:09:29,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:29,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:29,990 INFO L354 Elim1Store]: treesize reduction 260, result has 14.8 percent of original size [2021-11-20 06:09:29,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 201 treesize of output 182 [2021-11-20 06:09:30,306 INFO L354 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2021-11-20 06:09:30,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 167 treesize of output 95 [2021-11-20 06:09:30,328 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-20 06:09:30,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 83 treesize of output 57 [2021-11-20 06:09:30,333 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:09:30,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-11-20 06:09:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:30,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:09:32,446 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_44 Int) (v_DerPreprocessor_43 Int)) (<= 101 (let ((.cse8 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8)) (.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse0 (store (select |c_#memory_$Pointer$.offset| .cse0) .cse2 v_DerPreprocessor_44))) (.cse3 (store |c_#memory_$Pointer$.base| .cse0 (store (select |c_#memory_$Pointer$.base| .cse0) .cse2 v_DerPreprocessor_43))) (.cse7 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7) 4))) (select (select (store |c_#memory_int| .cse0 (let ((.cse1 (select |c_#memory_int| .cse0))) (store .cse1 .cse2 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (select .cse1 .cse2))))) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))))))) is different from false [2021-11-20 06:09:35,363 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-11-20 06:09:35,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86706857] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:09:35,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:09:35,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2021-11-20 06:09:35,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407234943] [2021-11-20 06:09:35,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:09:35,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 06:09:35,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:35,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 06:09:35,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=386, Unknown=1, NotChecked=40, Total=506 [2021-11-20 06:09:35,365 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:40,428 INFO L93 Difference]: Finished difference Result 52 states and 68 transitions. [2021-11-20 06:09:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:09:40,428 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:09:40,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:40,429 INFO L225 Difference]: With dead ends: 52 [2021-11-20 06:09:40,429 INFO L226 Difference]: Without dead ends: 45 [2021-11-20 06:09:40,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=161, Invalid=712, Unknown=1, NotChecked=56, Total=930 [2021-11-20 06:09:40,431 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:40,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 146 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 103 Invalid, 0 Unknown, 73 Unchecked, 0.3s Time] [2021-11-20 06:09:40,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-20 06:09:40,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-20 06:09:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-11-20 06:09:40,452 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 19 [2021-11-20 06:09:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:40,452 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-11-20 06:09:40,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-11-20 06:09:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:09:40,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:40,453 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:09:40,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:09:40,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-20 06:09:40,667 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2096375286, now seen corresponding path program 1 times [2021-11-20 06:09:40,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:40,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553297118] [2021-11-20 06:09:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:40,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:41,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:41,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553297118] [2021-11-20 06:09:41,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553297118] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:09:41,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355550543] [2021-11-20 06:09:41,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:41,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:09:41,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:09:41,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:09:41,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-20 06:09:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:41,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-20 06:09:41,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:09:41,222 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:09:41,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 06:09:41,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 34 [2021-11-20 06:09:41,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-20 06:09:41,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:09:41,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:09:41,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:41,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:41,527 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-11-20 06:09:41,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 198 [2021-11-20 06:09:41,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:41,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:41,576 INFO L354 Elim1Store]: treesize reduction 64, result has 26.4 percent of original size [2021-11-20 06:09:41,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 245 treesize of output 225 [2021-11-20 06:09:41,616 INFO L354 Elim1Store]: treesize reduction 122, result has 10.9 percent of original size [2021-11-20 06:09:41,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 206 treesize of output 189 [2021-11-20 06:09:41,637 INFO L354 Elim1Store]: treesize reduction 79, result has 8.1 percent of original size [2021-11-20 06:09:41,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 180 treesize of output 156 [2021-11-20 06:09:41,656 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-20 06:09:41,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 147 treesize of output 155 [2021-11-20 06:09:41,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:41,665 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 06:09:41,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 136 [2021-11-20 06:09:42,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:42,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:42,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:42,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:42,108 INFO L354 Elim1Store]: treesize reduction 212, result has 13.5 percent of original size [2021-11-20 06:09:42,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 268 treesize of output 192 [2021-11-20 06:09:42,164 INFO L354 Elim1Store]: treesize reduction 282, result has 7.8 percent of original size [2021-11-20 06:09:42,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 223 treesize of output 198 [2021-11-20 06:09:42,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:42,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:42,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:42,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:42,215 INFO L354 Elim1Store]: treesize reduction 260, result has 14.8 percent of original size [2021-11-20 06:09:42,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 186 treesize of output 173 [2021-11-20 06:09:42,569 INFO L354 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2021-11-20 06:09:42,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 220 treesize of output 128 [2021-11-20 06:09:42,586 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-20 06:09:42,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 77 [2021-11-20 06:09:42,603 INFO L354 Elim1Store]: treesize reduction 88, result has 14.6 percent of original size [2021-11-20 06:09:42,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 57 treesize of output 47 [2021-11-20 06:09:44,725 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-20 06:09:44,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 39 [2021-11-20 06:09:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:44,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:09:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:49,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355550543] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:09:49,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 06:09:49,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2021-11-20 06:09:49,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39619672] [2021-11-20 06:09:49,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 06:09:49,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 06:09:49,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:09:49,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 06:09:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=399, Unknown=2, NotChecked=0, Total=506 [2021-11-20 06:09:49,880 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:57,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:09:57,203 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2021-11-20 06:09:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:09:57,204 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-20 06:09:57,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:09:57,204 INFO L225 Difference]: With dead ends: 69 [2021-11-20 06:09:57,204 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 06:09:57,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=180, Invalid=628, Unknown=4, NotChecked=0, Total=812 [2021-11-20 06:09:57,206 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:09:57,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 107 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 74 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2021-11-20 06:09:57,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 06:09:57,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2021-11-20 06:09:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 52 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2021-11-20 06:09:57,215 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 19 [2021-11-20 06:09:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:09:57,216 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2021-11-20 06:09:57,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:09:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2021-11-20 06:09:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 06:09:57,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:09:57,217 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:09:57,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:09:57,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-20 06:09:57,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:09:57,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:09:57,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2096373364, now seen corresponding path program 1 times [2021-11-20 06:09:57,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:09:57,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624669817] [2021-11-20 06:09:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:57,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:09:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:57,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:09:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624669817] [2021-11-20 06:09:57,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624669817] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:09:57,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616230092] [2021-11-20 06:09:57,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:09:57,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:09:57,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:09:57,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:09:57,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e142153d-a137-4ed1-949a-d620b6fecd31/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-20 06:09:57,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:09:57,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-20 06:09:57,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:09:57,898 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 06:09:57,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 06:09:57,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:57,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-20 06:09:58,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,030 INFO L354 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2021-11-20 06:09:58,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 165 treesize of output 151 [2021-11-20 06:09:58,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 184 [2021-11-20 06:09:58,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,049 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-20 06:09:58,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 157 [2021-11-20 06:09:58,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,070 INFO L354 Elim1Store]: treesize reduction 41, result has 24.1 percent of original size [2021-11-20 06:09:58,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 121 [2021-11-20 06:09:58,085 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-11-20 06:09:58,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 113 [2021-11-20 06:09:58,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,363 INFO L354 Elim1Store]: treesize reduction 212, result has 13.5 percent of original size [2021-11-20 06:09:58,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 245 treesize of output 169 [2021-11-20 06:09:58,401 INFO L354 Elim1Store]: treesize reduction 186, result has 10.1 percent of original size [2021-11-20 06:09:58,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 200 treesize of output 180 [2021-11-20 06:09:58,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:09:58,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 06:09:58,441 INFO L354 Elim1Store]: treesize reduction 260, result has 14.8 percent of original size [2021-11-20 06:09:58,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 149 treesize of output 148 [2021-11-20 06:09:58,746 INFO L354 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2021-11-20 06:09:58,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 226 treesize of output 120 [2021-11-20 06:09:58,757 INFO L354 Elim1Store]: treesize reduction 34, result has 8.1 percent of original size [2021-11-20 06:09:58,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 105 treesize of output 67 [2021-11-20 06:09:58,767 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-20 06:09:58,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 29 [2021-11-20 06:09:58,814 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-20 06:09:58,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 28 [2021-11-20 06:09:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:09:58,824 INFO L328 TraceCheckSpWp]: Computing backward predicates...