./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/res2o.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/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_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/res2o.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/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_812e6b54-705c-4c10-a685-d7eaf355b294/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 c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:16:59,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:16:59,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:16:59,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:16:59,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:16:59,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:16:59,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:16:59,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:16:59,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:16:59,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:16:59,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:16:59,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:16:59,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:16:59,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:16:59,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:16:59,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:16:59,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:16:59,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:16:59,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:16:59,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:16:59,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:16:59,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:16:59,476 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:16:59,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:16:59,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:16:59,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:16:59,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:16:59,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:16:59,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:16:59,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:16:59,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:16:59,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:16:59,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:16:59,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:16:59,510 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:16:59,510 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:16:59,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:16:59,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:16:59,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:16:59,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:16:59,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:16:59,520 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:16:59,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:16:59,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:16:59,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:16:59,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:16:59,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:16:59,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:16:59,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:16:59,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:16:59,582 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:16:59,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:16:59,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:16:59,584 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:16:59,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:16:59,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:16:59,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:16:59,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:16:59,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:16:59,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:16:59,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:16:59,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:16:59,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:16:59,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:16:59,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:16:59,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:16:59,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:16:59,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:16:59,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:16:59,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:16:59,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:16:59,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:16:59,593 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:16:59,593 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:16:59,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:16:59,594 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:16:59,594 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_812e6b54-705c-4c10-a685-d7eaf355b294/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8f420e2027982da4f1bb18a6387f830c2a1e2f24637d0451d3246965ba37a6d [2021-11-20 07:16:59,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:16:59,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:16:59,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:16:59,971 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:16:59,972 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:16:59,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/array-fpi/res2o.c [2021-11-20 07:17:00,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/data/171cc7ad4/f445dee6a0b24884b40b55bfa3fa77be/FLAGcee1b3f31 [2021-11-20 07:17:00,698 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:17:00,704 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/sv-benchmarks/c/array-fpi/res2o.c [2021-11-20 07:17:00,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/data/171cc7ad4/f445dee6a0b24884b40b55bfa3fa77be/FLAGcee1b3f31 [2021-11-20 07:17:01,007 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/data/171cc7ad4/f445dee6a0b24884b40b55bfa3fa77be [2021-11-20 07:17:01,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:17:01,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:17:01,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:17:01,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:17:01,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:17:01,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d314aa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01, skipping insertion in model container [2021-11-20 07:17:01,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:17:01,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:17:01,288 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_812e6b54-705c-4c10-a685-d7eaf355b294/sv-benchmarks/c/array-fpi/res2o.c[588,601] [2021-11-20 07:17:01,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:17:01,342 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:17:01,367 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/sv-benchmarks/c/array-fpi/res2o.c[588,601] [2021-11-20 07:17:01,415 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:17:01,438 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:17:01,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01 WrapperNode [2021-11-20 07:17:01,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:17:01,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:17:01,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:17:01,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:17:01,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,499 INFO L137 Inliner]: procedures = 17, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 113 [2021-11-20 07:17:01,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:17:01,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:17:01,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:17:01,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:17:01,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:17:01,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:17:01,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:17:01,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:17:01,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (1/1) ... [2021-11-20 07:17:01,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:17:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:01,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:17:01,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:17:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:17:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:17:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:17:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 07:17:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:17:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:17:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:17:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 07:17:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:17:01,755 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:17:01,757 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:17:01,972 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:17:01,980 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:17:01,981 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-20 07:17:01,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:01 BoogieIcfgContainer [2021-11-20 07:17:01,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:17:01,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:17:01,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:17:01,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:17:01,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:17:01" (1/3) ... [2021-11-20 07:17:01,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb3a123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:01, skipping insertion in model container [2021-11-20 07:17:01,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:17:01" (2/3) ... [2021-11-20 07:17:01,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb3a123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:17:01, skipping insertion in model container [2021-11-20 07:17:01,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:17:01" (3/3) ... [2021-11-20 07:17:01,995 INFO L111 eAbstractionObserver]: Analyzing ICFG res2o.c [2021-11-20 07:17:02,002 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:17:02,002 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:17:02,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:17:02,072 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 07:17:02,073 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:17:02,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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 07:17:02,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:17:02,099 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:02,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:02,101 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:17:02,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1780399656, now seen corresponding path program 1 times [2021-11-20 07:17:02,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:02,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596798409] [2021-11-20 07:17:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:02,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:02,348 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 07:17:02,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:02,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596798409] [2021-11-20 07:17:02,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596798409] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:02,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:02,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:17:02,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129149962] [2021-11-20 07:17:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:02,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 07:17:02,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:02,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:17:02,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:17:02,412 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 07:17:02,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:02,436 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2021-11-20 07:17:02,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:17:02,438 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 07:17:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:02,455 INFO L225 Difference]: With dead ends: 56 [2021-11-20 07:17:02,456 INFO L226 Difference]: Without dead ends: 26 [2021-11-20 07:17:02,461 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 07:17:02,472 INFO L933 BasicCegarLoop]: 36 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, 36 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 07:17:02,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:17:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-20 07:17:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-20 07:17:02,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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 07:17:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-11-20 07:17:02,535 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 19 [2021-11-20 07:17:02,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:02,535 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-11-20 07:17:02,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 07:17:02,536 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-11-20 07:17:02,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 07:17:02,537 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:02,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:02,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:17:02,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:17:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:02,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1279549768, now seen corresponding path program 1 times [2021-11-20 07:17:02,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:02,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822206449] [2021-11-20 07:17:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:02,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:02,706 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 07:17:02,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822206449] [2021-11-20 07:17:02,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822206449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:17:02,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:17:02,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:17:02,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821677852] [2021-11-20 07:17:02,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:17:02,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:17:02,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:02,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:17:02,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:17:02,713 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 07:17:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:02,917 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-11-20 07:17:02,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:17:02,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 07:17:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:02,923 INFO L225 Difference]: With dead ends: 57 [2021-11-20 07:17:02,924 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 07:17:02,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:17:02,928 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:02,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 14 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:17:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 07:17:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2021-11-20 07:17:02,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 31 states have internal predecessors, (37), 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 07:17:02,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-20 07:17:02,940 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 19 [2021-11-20 07:17:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:02,940 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-20 07:17:02,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 07:17:02,941 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-20 07:17:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-20 07:17:02,942 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:02,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:02,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:17:02,943 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:17:02,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:02,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1740145276, now seen corresponding path program 1 times [2021-11-20 07:17:02,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:02,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844997440] [2021-11-20 07:17:02,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:02,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:05,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:05,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844997440] [2021-11-20 07:17:05,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844997440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:05,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920215954] [2021-11-20 07:17:05,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:05,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:05,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:05,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:17:05,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:17:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:05,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-20 07:17:05,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:05,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:17:05,571 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 07:17:05,577 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 40 treesize of output 34 [2021-11-20 07:17:05,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:05,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-20 07:17:06,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-20 07:17:06,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-20 07:17:06,900 INFO L354 Elim1Store]: treesize reduction 55, result has 11.3 percent of original size [2021-11-20 07:17:06,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 62 treesize of output 55 [2021-11-20 07:17:07,456 INFO L354 Elim1Store]: treesize reduction 100, result has 13.0 percent of original size [2021-11-20 07:17:07,457 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 7 case distinctions, treesize of input 74 treesize of output 63 [2021-11-20 07:17:08,113 INFO L354 Elim1Store]: treesize reduction 138, result has 13.8 percent of original size [2021-11-20 07:17:08,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 80 treesize of output 69 [2021-11-20 07:17:08,583 INFO L354 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2021-11-20 07:17:08,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 91 treesize of output 67 [2021-11-20 07:17:08,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:08,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:09,980 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 07:17:09,981 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 718 treesize of output 712 [2021-11-20 07:17:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:10,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920215954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:17:10,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:17:10,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 36 [2021-11-20 07:17:10,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720434303] [2021-11-20 07:17:10,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:10,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-20 07:17:10,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:10,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-20 07:17:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1031, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 07:17:10,870 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 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 07:17:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:11,537 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2021-11-20 07:17:11,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 07:17:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 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 31 [2021-11-20 07:17:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:11,539 INFO L225 Difference]: With dead ends: 49 [2021-11-20 07:17:11,539 INFO L226 Difference]: Without dead ends: 45 [2021-11-20 07:17:11,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 35 SyntacticMatches, 15 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=255, Invalid=1151, Unknown=0, NotChecked=0, Total=1406 [2021-11-20 07:17:11,542 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:11,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 103 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 234 Invalid, 0 Unknown, 50 Unchecked, 0.5s Time] [2021-11-20 07:17:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-20 07:17:11,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2021-11-20 07:17:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 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 07:17:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-20 07:17:11,554 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 31 [2021-11-20 07:17:11,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:11,555 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-20 07:17:11,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 36 states have internal predecessors, (76), 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 07:17:11,555 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-20 07:17:11,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-20 07:17:11,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:11,557 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:11,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:11,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:11,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:17:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:11,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245574, now seen corresponding path program 2 times [2021-11-20 07:17:11,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:11,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435722591] [2021-11-20 07:17:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:11,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:11,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:17:11,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:11,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435722591] [2021-11-20 07:17:11,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435722591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:11,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916100037] [2021-11-20 07:17:11,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:17:11,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:11,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:11,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:17:11,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:17:11,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:17:11,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:17:11,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:17:11,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:17:12,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 07:17:12,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916100037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:17:12,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:17:12,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 07:17:12,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043324690] [2021-11-20 07:17:12,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:12,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:17:12,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:17:12,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:17:12,188 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 07:17:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:12,465 INFO L93 Difference]: Finished difference Result 116 states and 136 transitions. [2021-11-20 07:17:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:17:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 33 [2021-11-20 07:17:12,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:12,467 INFO L225 Difference]: With dead ends: 116 [2021-11-20 07:17:12,467 INFO L226 Difference]: Without dead ends: 62 [2021-11-20 07:17:12,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:17:12,469 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:12,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 43 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:17:12,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-20 07:17:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2021-11-20 07:17:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 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 07:17:12,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2021-11-20 07:17:12,482 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 33 [2021-11-20 07:17:12,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:12,482 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2021-11-20 07:17:12,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 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 07:17:12,483 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2021-11-20 07:17:12,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-20 07:17:12,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:12,484 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:12,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:12,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:12,704 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:17:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -284383476, now seen corresponding path program 3 times [2021-11-20 07:17:12,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:12,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693418319] [2021-11-20 07:17:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:12,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:17:12,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:12,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693418319] [2021-11-20 07:17:12,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693418319] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:12,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119669332] [2021-11-20 07:17:12,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 07:17:12,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:12,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:12,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:17:12,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:17:12,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-20 07:17:12,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:17:12,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 07:17:12,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:17:13,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:17:13,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119669332] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:17:13,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:17:13,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-20 07:17:13,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434677688] [2021-11-20 07:17:13,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:13,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:17:13,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:13,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:17:13,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:17:13,206 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 07:17:13,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:17:13,445 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2021-11-20 07:17:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:17:13,446 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 39 [2021-11-20 07:17:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:17:13,447 INFO L225 Difference]: With dead ends: 57 [2021-11-20 07:17:13,447 INFO L226 Difference]: Without dead ends: 49 [2021-11-20 07:17:13,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 75 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:17:13,449 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 66 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:17:13,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 31 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:17:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-20 07:17:13,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2021-11-20 07:17:13,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 43 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 07:17:13,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2021-11-20 07:17:13,459 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 39 [2021-11-20 07:17:13,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:17:13,460 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2021-11-20 07:17:13,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 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 07:17:13,460 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2021-11-20 07:17:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-20 07:17:13,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:17:13,462 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:17:13,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:17:13,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:13,671 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:17:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:17:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1410382416, now seen corresponding path program 4 times [2021-11-20 07:17:13,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:17:13,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638606916] [2021-11-20 07:17:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:17:13,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:17:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:17:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:18,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:17:18,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638606916] [2021-11-20 07:17:18,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638606916] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:17:18,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382402042] [2021-11-20 07:17:18,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:17:18,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:17:18,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:17:18,396 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:17:18,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:17:18,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:17:18,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:17:18,469 WARN L261 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-20 07:17:18,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:17:18,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:18,540 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:17:18,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 27 treesize of output 23 [2021-11-20 07:17:18,568 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 11 treesize of output 7 [2021-11-20 07:17:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:18,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:17:19,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:19,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:19,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-20 07:17:19,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:19,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:19,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2021-11-20 07:17:19,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:19,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:19,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:19,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2021-11-20 07:17:20,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2021-11-20 07:17:20,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:20,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 74 [2021-11-20 07:17:21,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:21,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 9 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 83 [2021-11-20 07:17:21,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:21,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:21,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:21,918 INFO L354 Elim1Store]: treesize reduction 108, result has 12.2 percent of original size [2021-11-20 07:17:21,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 13 case distinctions, treesize of input 92 treesize of output 90 [2021-11-20 07:17:22,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:22,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:22,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:22,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:22,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:22,612 INFO L354 Elim1Store]: treesize reduction 108, result has 12.2 percent of original size [2021-11-20 07:17:22,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 5 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 98 [2021-11-20 07:17:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:23,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:23,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:23,109 INFO L354 Elim1Store]: treesize reduction 200, result has 12.7 percent of original size [2021-11-20 07:17:23,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 105 treesize of output 99 [2021-11-20 07:17:23,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:23,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:17:23,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:17:23,963 INFO L354 Elim1Store]: treesize reduction 200, result has 12.7 percent of original size [2021-11-20 07:17:23,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 26 case distinctions, treesize of input 109 treesize of output 103 [2021-11-20 07:17:24,568 INFO L354 Elim1Store]: treesize reduction 276, result has 13.5 percent of original size [2021-11-20 07:17:24,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 114 treesize of output 104 [2021-11-20 07:17:25,102 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-11-20 07:17:25,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 78 [2021-11-20 07:17:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:25,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:17:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:17:49,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382402042] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:17:49,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:17:49,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27, 27] total 82 [2021-11-20 07:17:49,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559918269] [2021-11-20 07:17:49,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:17:49,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-20 07:17:49,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:17:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-20 07:17:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=658, Invalid=5984, Unknown=0, NotChecked=0, Total=6642 [2021-11-20 07:17:49,148 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 82 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 82 states have internal predecessors, (116), 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 07:18:27,427 WARN L227 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 242 DAG size of output: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:19:13,908 WARN L227 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 247 DAG size of output: 117 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:19:27,305 WARN L227 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 224 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:19:54,256 WARN L227 SmtUtils]: Spent 15.03s on a formula simplification. DAG size of input: 183 DAG size of output: 171 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:20:06,386 WARN L227 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 231 DAG size of output: 112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:20:16,262 WARN L227 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 207 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:20:40,127 WARN L227 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 216 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:20:40,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:40,259 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2021-11-20 07:20:40,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 07:20:40,260 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 82 states have internal predecessors, (116), 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 43 [2021-11-20 07:20:40,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:40,261 INFO L225 Difference]: With dead ends: 85 [2021-11-20 07:20:40,262 INFO L226 Difference]: Without dead ends: 81 [2021-11-20 07:20:40,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4143 ImplicationChecksByTransitivity, 186.3s TimeCoverageRelationStatistics Valid=1442, Invalid=10548, Unknown=0, NotChecked=0, Total=11990 [2021-11-20 07:20:40,271 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 87 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:40,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 159 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 802 Invalid, 0 Unknown, 150 Unchecked, 12.6s Time] [2021-11-20 07:20:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-11-20 07:20:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2021-11-20 07:20:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 54 states have internal predecessors, (62), 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 07:20:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-11-20 07:20:40,288 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 43 [2021-11-20 07:20:40,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:40,288 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-11-20 07:20:40,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.4146341463414633) internal successors, (116), 82 states have internal predecessors, (116), 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 07:20:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-11-20 07:20:40,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-20 07:20:40,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:40,291 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:40,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:20:40,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:40,515 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -313453870, now seen corresponding path program 5 times [2021-11-20 07:20:40,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:40,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177450132] [2021-11-20 07:20:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:40,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 07:20:40,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:40,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177450132] [2021-11-20 07:20:40,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177450132] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:20:40,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469683954] [2021-11-20 07:20:40,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-20 07:20:40,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:40,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:40,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:20:40,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:20:40,922 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-20 07:20:40,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:20:40,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:20:40,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 07:20:41,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:20:41,293 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-20 07:20:41,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469683954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:20:41,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:20:41,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2021-11-20 07:20:41,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240594797] [2021-11-20 07:20:41,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:20:41,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-20 07:20:41,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:20:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-20 07:20:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:20:41,295 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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 07:20:42,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:20:42,044 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2021-11-20 07:20:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 07:20:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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) Word has length 45 [2021-11-20 07:20:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:20:42,045 INFO L225 Difference]: With dead ends: 133 [2021-11-20 07:20:42,045 INFO L226 Difference]: Without dead ends: 62 [2021-11-20 07:20:42,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2021-11-20 07:20:42,048 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 179 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:20:42,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 57 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 07:20:42,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-20 07:20:42,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-11-20 07:20:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 55 states have internal predecessors, (61), 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 07:20:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-11-20 07:20:42,070 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 45 [2021-11-20 07:20:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:20:42,070 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-11-20 07:20:42,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 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 07:20:42,071 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-11-20 07:20:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-20 07:20:42,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:20:42,072 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:20:42,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:20:42,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 07:20:42,283 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:20:42,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:20:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1101638372, now seen corresponding path program 6 times [2021-11-20 07:20:42,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:20:42,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349657542] [2021-11-20 07:20:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:20:42,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:20:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:20:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:20:49,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:20:49,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349657542] [2021-11-20 07:20:49,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349657542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:20:49,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802687376] [2021-11-20 07:20:49,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-20 07:20:49,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:20:49,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:20:49,659 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:20:49,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_812e6b54-705c-4c10-a685-d7eaf355b294/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 07:20:49,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-20 07:20:49,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:20:49,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-20 07:20:49,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:20:49,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-20 07:20:49,900 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-20 07:20:49,901 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 40 treesize of output 34 [2021-11-20 07:20:49,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:49,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-20 07:20:50,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2021-11-20 07:20:50,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 29 [2021-11-20 07:20:50,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2021-11-20 07:20:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 35 treesize of output 44 [2021-11-20 07:20:50,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:50,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 53 [2021-11-20 07:20:51,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:51,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:51,230 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-20 07:20:51,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 67 [2021-11-20 07:20:51,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:51,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:51,661 INFO L354 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2021-11-20 07:20:51,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 82 [2021-11-20 07:20:52,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:52,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:52,603 INFO L354 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2021-11-20 07:20:52,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 9 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 87 treesize of output 104 [2021-11-20 07:20:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,223 INFO L354 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2021-11-20 07:20:53,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 114 [2021-11-20 07:20:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:53,821 INFO L354 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2021-11-20 07:20:53,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 3 case distinctions, treesize of input 101 treesize of output 124 [2021-11-20 07:20:54,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,550 INFO L354 Elim1Store]: treesize reduction 42, result has 2.3 percent of original size [2021-11-20 07:20:54,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 12 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 129 [2021-11-20 07:20:54,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:54,931 INFO L354 Elim1Store]: treesize reduction 83, result has 1.2 percent of original size [2021-11-20 07:20:54,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 12 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 140 [2021-11-20 07:20:55,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:55,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:55,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:55,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:55,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:55,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:55,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:55,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:55,656 INFO L354 Elim1Store]: treesize reduction 661, result has 6.5 percent of original size [2021-11-20 07:20:55,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 9 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 53 case distinctions, treesize of input 145 treesize of output 162 [2021-11-20 07:20:57,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:57,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:57,277 INFO L354 Elim1Store]: treesize reduction 729, result has 5.0 percent of original size [2021-11-20 07:20:57,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 7 disjoint index pairs (out of 78 index pairs), introduced 12 new quantified variables, introduced 60 case distinctions, treesize of input 158 treesize of output 167 [2021-11-20 07:20:57,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:57,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:57,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:57,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:58,046 INFO L354 Elim1Store]: treesize reduction 547, result has 6.0 percent of original size [2021-11-20 07:20:58,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 7 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 47 case distinctions, treesize of input 154 treesize of output 171 [2021-11-20 07:20:58,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:58,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:58,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:58,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:58,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:58,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:58,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:58,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:20:58,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:58,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:20:59,165 INFO L354 Elim1Store]: treesize reduction 1018, result has 5.9 percent of original size [2021-11-20 07:20:59,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 5 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 81 case distinctions, treesize of input 175 treesize of output 171 [2021-11-20 07:21:01,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:01,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:01,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:01,293 INFO L354 Elim1Store]: treesize reduction 596, result has 8.0 percent of original size [2021-11-20 07:21:01,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 4 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 56 case distinctions, treesize of input 156 treesize of output 156 [2021-11-20 07:21:01,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:01,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:01,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:01,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:02,084 INFO L354 Elim1Store]: treesize reduction 562, result has 8.0 percent of original size [2021-11-20 07:21:02,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 5 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 140 treesize of output 154 [2021-11-20 07:21:02,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:02,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:02,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:02,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:21:02,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 07:21:03,155 INFO L354 Elim1Store]: treesize reduction 860, result has 9.5 percent of original size [2021-11-20 07:21:03,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 5 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 77 case distinctions, treesize of input 147 treesize of output 164 [2021-11-20 07:21:06,481 INFO L354 Elim1Store]: treesize reduction 558, result has 1.2 percent of original size [2021-11-20 07:21:06,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 173 treesize of output 101 [2021-11-20 07:21:06,603 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:06,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:21:08,869 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_127| Int)) (or (<= c_~N~0 (+ |v_ULTIMATE.start_main_~i~0#1_127| 1)) (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_127|) c_~N~0) (<= (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (* |v_ULTIMATE.start_main_~i~0#1_127| 4))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| .cse4)))) (+ .cse0 .cse1 .cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse2))) |c_ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| .cse4 4)))))) (* 3 c_~N~0)))) is different from false [2021-11-20 07:21:10,289 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_127| Int)) (or (<= c_~N~0 (+ |v_ULTIMATE.start_main_~i~0#1_127| 1)) (< (+ 2 |v_ULTIMATE.start_main_~i~0#1_127|) c_~N~0) (<= (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~c~0#1.base|) |c_ULTIMATE.start_main_~c~0#1.offset|)) (.cse4 (* |v_ULTIMATE.start_main_~i~0#1_127| 4))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| .cse4)))) (+ .cse0 .cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 .cse3))) |c_ULTIMATE.start_main_~c~0#1.base|) (+ |c_ULTIMATE.start_main_~c~0#1.offset| .cse4 4)) .cse3)))) (* 3 c_~N~0)))) is different from false