./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/calendar.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/calendar.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:28:53,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:28:53,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:28:53,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:28:53,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:28:53,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:28:53,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:28:53,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:28:53,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:28:53,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:28:53,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:28:53,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:28:53,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:28:53,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:28:53,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:28:53,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:28:53,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:28:53,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:28:53,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:28:53,682 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:28:53,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:28:53,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:28:53,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:28:53,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:28:53,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:28:53,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:28:53,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:28:53,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:28:53,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:28:53,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:28:53,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:28:53,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:28:53,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:28:53,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:28:53,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:28:53,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:28:53,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:28:53,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:28:53,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:28:53,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:28:53,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:28:53,697 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:28:53,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:28:53,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:28:53,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:28:53,714 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:28:53,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:28:53,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:28:53,715 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:28:53,715 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:28:53,715 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:28:53,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:28:53,715 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:28:53,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:28:53,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:28:53,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:28:53,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:28:53,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:28:53,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:28:53,717 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:28:53,717 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:28:53,717 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:28:53,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:28:53,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:28:53,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:28:53,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:28:53,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:28:53,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:28:53,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:28:53,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:28:53,718 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:28:53,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:28:53,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:28:53,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:28:53,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:28:53,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:28:53,719 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_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe08ef78ee5c945bc38e9e915e26405aefe9ffb2d4911c91347e07e6a879dcd5 [2021-12-06 22:28:53,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:28:53,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:28:53,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:28:53,935 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:28:53,935 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:28:53,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/heap-data/calendar.i [2021-12-06 22:28:53,977 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/data/5595e97ce/1b10a3a4f4034dc08c291974dcde2f3e/FLAGde00215f8 [2021-12-06 22:28:54,408 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:28:54,408 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/sv-benchmarks/c/heap-data/calendar.i [2021-12-06 22:28:54,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/data/5595e97ce/1b10a3a4f4034dc08c291974dcde2f3e/FLAGde00215f8 [2021-12-06 22:28:54,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/data/5595e97ce/1b10a3a4f4034dc08c291974dcde2f3e [2021-12-06 22:28:54,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:28:54,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:28:54,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:28:54,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:28:54,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:28:54,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54237f4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54, skipping insertion in model container [2021-12-06 22:28:54,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:28:54,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:28:54,660 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_bca76964-c618-4263-bd34-db0600017a7a/sv-benchmarks/c/heap-data/calendar.i[23742,23755] [2021-12-06 22:28:54,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:28:54,669 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:28:54,706 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_bca76964-c618-4263-bd34-db0600017a7a/sv-benchmarks/c/heap-data/calendar.i[23742,23755] [2021-12-06 22:28:54,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:28:54,729 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:28:54,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54 WrapperNode [2021-12-06 22:28:54,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:28:54,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:28:54,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:28:54,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:28:54,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,767 INFO L137 Inliner]: procedures = 121, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 71 [2021-12-06 22:28:54,768 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:28:54,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:28:54,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:28:54,769 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:28:54,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,780 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:28:54,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:28:54,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:28:54,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:28:54,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (1/1) ... [2021-12-06 22:28:54,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:28:54,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:28:54,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:28:54,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:28:54,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:28:54,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:28:54,933 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:28:54,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:28:55,045 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:28:55,049 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:28:55,049 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 22:28:55,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:28:55 BoogieIcfgContainer [2021-12-06 22:28:55,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:28:55,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:28:55,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:28:55,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:28:55,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:28:54" (1/3) ... [2021-12-06 22:28:55,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1357a47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:28:55, skipping insertion in model container [2021-12-06 22:28:55,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:28:54" (2/3) ... [2021-12-06 22:28:55,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1357a47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:28:55, skipping insertion in model container [2021-12-06 22:28:55,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:28:55" (3/3) ... [2021-12-06 22:28:55,056 INFO L111 eAbstractionObserver]: Analyzing ICFG calendar.i [2021-12-06 22:28:55,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:28:55,060 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:28:55,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:28:55,100 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:28:55,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:28:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 22:28:55,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:55,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:55,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:55,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:55,119 INFO L85 PathProgramCache]: Analyzing trace with hash 399551724, now seen corresponding path program 1 times [2021-12-06 22:28:55,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:55,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162108871] [2021-12-06 22:28:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:55,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:55,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:55,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162108871] [2021-12-06 22:28:55,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162108871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:55,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:55,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:28:55,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015537673] [2021-12-06 22:28:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:55,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:28:55,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:55,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:28:55,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:28:55,251 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:55,261 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2021-12-06 22:28:55,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:28:55,263 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 22:28:55,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:55,269 INFO L225 Difference]: With dead ends: 35 [2021-12-06 22:28:55,269 INFO L226 Difference]: Without dead ends: 18 [2021-12-06 22:28:55,271 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 [2021-12-06 22:28:55,274 INFO L933 BasicCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:55,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-06 22:28:55,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-06 22:28:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.411764705882353) internal successors, (24), 17 states have internal predecessors, (24), 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) [2021-12-06 22:28:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-12-06 22:28:55,297 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 24 transitions. Word has length 10 [2021-12-06 22:28:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:55,297 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-12-06 22:28:55,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,298 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2021-12-06 22:28:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 22:28:55,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:55,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:55,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:28:55,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:55,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1946762309, now seen corresponding path program 1 times [2021-12-06 22:28:55,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:55,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104382037] [2021-12-06 22:28:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:55,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:55,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:55,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:55,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104382037] [2021-12-06 22:28:55,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104382037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:55,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:55,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:28:55,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285972463] [2021-12-06 22:28:55,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:55,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:28:55,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:55,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:28:55,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:28:55,371 INFO L87 Difference]: Start difference. First operand 18 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-06 22:28:55,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:55,410 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2021-12-06 22:28:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:28:55,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-12-06 22:28:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:55,412 INFO L225 Difference]: With dead ends: 35 [2021-12-06 22:28:55,412 INFO L226 Difference]: Without dead ends: 23 [2021-12-06 22:28:55,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:28:55,414 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:55,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 59 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-06 22:28:55,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-06 22:28:55,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 22 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) [2021-12-06 22:28:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2021-12-06 22:28:55,421 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 12 [2021-12-06 22:28:55,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:55,421 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2021-12-06 22:28:55,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-06 22:28:55,421 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2021-12-06 22:28:55,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 22:28:55,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:55,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:55,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:28:55,423 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:55,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:55,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1070818203, now seen corresponding path program 1 times [2021-12-06 22:28:55,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:55,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307681901] [2021-12-06 22:28:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:55,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:55,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:55,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:55,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307681901] [2021-12-06 22:28:55,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307681901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:55,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:55,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:28:55,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859928100] [2021-12-06 22:28:55,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:55,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:28:55,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:28:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:55,590 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:55,884 INFO L93 Difference]: Finished difference Result 78 states and 105 transitions. [2021-12-06 22:28:55,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 22:28:55,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-06 22:28:55,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:55,885 INFO L225 Difference]: With dead ends: 78 [2021-12-06 22:28:55,885 INFO L226 Difference]: Without dead ends: 68 [2021-12-06 22:28:55,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2021-12-06 22:28:55,887 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 132 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:55,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 114 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:28:55,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-06 22:28:55,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 27. [2021-12-06 22:28:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 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) [2021-12-06 22:28:55,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2021-12-06 22:28:55,893 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 17 [2021-12-06 22:28:55,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:55,893 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2021-12-06 22:28:55,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2021-12-06 22:28:55,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:28:55,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:55,894 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:55,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:28:55,894 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:55,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1737463723, now seen corresponding path program 1 times [2021-12-06 22:28:55,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:55,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801594972] [2021-12-06 22:28:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:55,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:55,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:28:55,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:55,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801594972] [2021-12-06 22:28:55,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801594972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:55,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:55,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:28:55,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535192378] [2021-12-06 22:28:55,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:55,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:28:55,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:55,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:28:55,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:28:55,944 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:55,981 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2021-12-06 22:28:55,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:28:55,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 22:28:55,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:55,982 INFO L225 Difference]: With dead ends: 50 [2021-12-06 22:28:55,987 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 22:28:55,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:28:55,989 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:55,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:55,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 22:28:55,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2021-12-06 22:28:55,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 29 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-12-06 22:28:55,993 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 19 [2021-12-06 22:28:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:55,994 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-12-06 22:28:55,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:55,994 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-12-06 22:28:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:28:55,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:55,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:55,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:28:55,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:55,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1737523305, now seen corresponding path program 1 times [2021-12-06 22:28:55,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:55,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629207923] [2021-12-06 22:28:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:55,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:28:56,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:56,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629207923] [2021-12-06 22:28:56,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629207923] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:56,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:56,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:28:56,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533326228] [2021-12-06 22:28:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:56,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:28:56,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:28:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:28:56,028 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:56,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:56,040 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2021-12-06 22:28:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:28:56,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 22:28:56,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:56,041 INFO L225 Difference]: With dead ends: 34 [2021-12-06 22:28:56,041 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 22:28:56,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:28:56,043 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:56,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:56,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 22:28:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 22:28:56,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 22:28:56,047 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 19 [2021-12-06 22:28:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:56,048 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 22:28:56,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:28:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 22:28:56,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:28:56,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:56,048 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:56,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:28:56,049 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:56,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash -782496211, now seen corresponding path program 1 times [2021-12-06 22:28:56,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:56,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134765704] [2021-12-06 22:28:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:56,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:56,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:56,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:56,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134765704] [2021-12-06 22:28:56,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134765704] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:56,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:28:56,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:28:56,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851590636] [2021-12-06 22:28:56,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:56,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:28:56,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:28:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:56,146 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 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) [2021-12-06 22:28:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:56,332 INFO L93 Difference]: Finished difference Result 76 states and 93 transitions. [2021-12-06 22:28:56,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:28:56,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 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 [2021-12-06 22:28:56,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:56,333 INFO L225 Difference]: With dead ends: 76 [2021-12-06 22:28:56,333 INFO L226 Difference]: Without dead ends: 74 [2021-12-06 22:28:56,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:28:56,334 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:56,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 108 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:28:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-06 22:28:56,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 35. [2021-12-06 22:28:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 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) [2021-12-06 22:28:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-12-06 22:28:56,340 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 19 [2021-12-06 22:28:56,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:56,340 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-12-06 22:28:56,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 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) [2021-12-06 22:28:56,340 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2021-12-06 22:28:56,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 22:28:56,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:56,341 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:56,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:28:56,341 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:56,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 830966801, now seen corresponding path program 1 times [2021-12-06 22:28:56,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:56,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794724138] [2021-12-06 22:28:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:56,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:56,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:56,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794724138] [2021-12-06 22:28:56,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794724138] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:28:56,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743019383] [2021-12-06 22:28:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:56,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:28:56,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:28:56,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:28:56,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:28:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:56,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 22:28:56,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:28:56,560 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 [2021-12-06 22:28:56,565 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 [2021-12-06 22:28:56,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:28:56,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:28:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:56,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:28:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:56,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743019383] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:28:56,792 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:28:56,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2021-12-06 22:28:56,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034672529] [2021-12-06 22:28:56,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:28:56,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:28:56,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:56,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:28:56,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:56,794 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2021-12-06 22:28:56,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:56,857 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2021-12-06 22:28:56,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:28:56,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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 25 [2021-12-06 22:28:56,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:56,860 INFO L225 Difference]: With dead ends: 68 [2021-12-06 22:28:56,860 INFO L226 Difference]: Without dead ends: 40 [2021-12-06 22:28:56,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:28:56,861 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 34 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:56,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 103 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-06 22:28:56,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-06 22:28:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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) [2021-12-06 22:28:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2021-12-06 22:28:56,868 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 25 [2021-12-06 22:28:56,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:56,868 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2021-12-06 22:28:56,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 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) [2021-12-06 22:28:56,869 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2021-12-06 22:28:56,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 22:28:56,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:56,870 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:56,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:28:57,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:28:57,072 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:57,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:57,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1524144039, now seen corresponding path program 2 times [2021-12-06 22:28:57,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:57,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65850340] [2021-12-06 22:28:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:57,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:57,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:57,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65850340] [2021-12-06 22:28:57,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65850340] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:28:57,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600153752] [2021-12-06 22:28:57,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:28:57,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:28:57,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:28:57,363 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:28:57,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:28:57,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:28:57,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:28:57,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-06 22:28:57,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:28:57,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:28:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:28:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:28:57,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:28:57,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:28:57,515 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 [2021-12-06 22:28:57,521 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 [2021-12-06 22:28:57,528 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 22:28:57,528 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 15 treesize of output 15 [2021-12-06 22:28:57,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:28:57,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 22:28:57,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-12-06 22:28:57,754 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:28:57,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:28:57,904 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_192 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_10| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_10| v_ArrVal_192) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (not (= 3 (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_10|) 0)) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1))))) is different from false [2021-12-06 22:28:57,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 22:28:57,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600153752] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:28:57,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:28:57,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 23 [2021-12-06 22:28:57,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456545534] [2021-12-06 22:28:57,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:28:57,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 22:28:57,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:57,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 22:28:57,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=406, Unknown=1, NotChecked=40, Total=506 [2021-12-06 22:28:57,974 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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) [2021-12-06 22:29:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:00,268 INFO L93 Difference]: Finished difference Result 136 states and 165 transitions. [2021-12-06 22:29:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-06 22:29:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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 30 [2021-12-06 22:29:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:00,269 INFO L225 Difference]: With dead ends: 136 [2021-12-06 22:29:00,269 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 22:29:00,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=842, Invalid=2241, Unknown=1, NotChecked=108, Total=3192 [2021-12-06 22:29:00,271 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 558 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:00,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 327 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 237 Invalid, 0 Unknown, 72 Unchecked, 0.3s Time] [2021-12-06 22:29:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 22:29:00,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 48. [2021-12-06 22:29:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.297872340425532) internal successors, (61), 47 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) [2021-12-06 22:29:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2021-12-06 22:29:00,277 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 30 [2021-12-06 22:29:00,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:00,277 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2021-12-06 22:29:00,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 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) [2021-12-06 22:29:00,277 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2021-12-06 22:29:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 22:29:00,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:00,278 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:00,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:29:00,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:00,479 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:00,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1895186671, now seen corresponding path program 1 times [2021-12-06 22:29:00,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:00,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505266685] [2021-12-06 22:29:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:00,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:00,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:00,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505266685] [2021-12-06 22:29:00,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505266685] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:00,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231051639] [2021-12-06 22:29:00,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:00,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:00,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:00,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:00,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:29:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:00,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-06 22:29:00,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:00,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:00,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:00,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:00,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:00,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:29:00,840 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 [2021-12-06 22:29:00,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:00,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:29:00,851 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 22:29:00,852 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 15 treesize of output 15 [2021-12-06 22:29:00,859 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 [2021-12-06 22:29:00,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2021-12-06 22:29:00,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 7 [2021-12-06 22:29:01,054 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:01,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:01,190 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_13| Int) (v_ArrVal_276 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_13| v_ArrVal_276) |c_ULTIMATE.start_main_~l~0#1.base|))) (or (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_13|) 0)) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) 2))))) is different from false [2021-12-06 22:29:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-12-06 22:29:01,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231051639] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:01,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:01,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 20 [2021-12-06 22:29:01,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214266709] [2021-12-06 22:29:01,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:01,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 22:29:01,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:01,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:29:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=288, Unknown=1, NotChecked=34, Total=380 [2021-12-06 22:29:01,252 INFO L87 Difference]: Start difference. First operand 48 states and 61 transitions. Second operand has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 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) [2021-12-06 22:29:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:01,900 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2021-12-06 22:29:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:29:01,901 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 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 32 [2021-12-06 22:29:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:01,901 INFO L225 Difference]: With dead ends: 64 [2021-12-06 22:29:01,901 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 22:29:01,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=311, Invalid=814, Unknown=1, NotChecked=64, Total=1190 [2021-12-06 22:29:01,902 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 88 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:01,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 312 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 192 Invalid, 0 Unknown, 38 Unchecked, 0.2s Time] [2021-12-06 22:29:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 22:29:01,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2021-12-06 22:29:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.3) internal successors, (65), 50 states have internal predecessors, (65), 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) [2021-12-06 22:29:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2021-12-06 22:29:01,907 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 32 [2021-12-06 22:29:01,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:01,907 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2021-12-06 22:29:01,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.5) internal successors, (70), 20 states have internal predecessors, (70), 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) [2021-12-06 22:29:01,908 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2021-12-06 22:29:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 22:29:01,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:01,908 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:01,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:29:02,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:02,110 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:02,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:02,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1135420755, now seen corresponding path program 3 times [2021-12-06 22:29:02,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:02,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493305106] [2021-12-06 22:29:02,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:02,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:02,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:02,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493305106] [2021-12-06 22:29:02,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493305106] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:02,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221581537] [2021-12-06 22:29:02,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:29:02,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:02,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:02,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:02,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:29:02,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 22:29:02,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:02,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 22:29:02,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:02,338 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 [2021-12-06 22:29:02,341 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 [2021-12-06 22:29:02,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:02,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:02,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:02,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:02,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:02,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:02,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:02,429 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 22:29:02,430 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 15 treesize of output 15 [2021-12-06 22:29:02,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:02,689 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-06 22:29:02,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 35 [2021-12-06 22:29:02,695 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:29:02,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-12-06 22:29:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:02,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:02,777 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:02,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-06 22:29:02,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:02,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-12-06 22:29:02,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,842 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_17| Int) (v_arrayElimArr_4 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_4 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_17|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_3 0))) (and (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_17| v_arrayElimArr_3) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) 0) (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_17| v_arrayElimArr_4) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) 0)))) is different from false [2021-12-06 22:29:02,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:02,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:03,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:03,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:03,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:03,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:03,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:03,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:03,118 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:03,119 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 48 [2021-12-06 22:29:03,122 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:03,122 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-12-06 22:29:03,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:03,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2021-12-06 22:29:03,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:03,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 22:29:03,140 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-06 22:29:03,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221581537] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:03,140 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:03,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 15 [2021-12-06 22:29:03,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732603176] [2021-12-06 22:29:03,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:03,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:29:03,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:03,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:29:03,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=148, Unknown=1, NotChecked=24, Total=210 [2021-12-06 22:29:03,141 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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) [2021-12-06 22:29:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:03,303 INFO L93 Difference]: Finished difference Result 102 states and 127 transitions. [2021-12-06 22:29:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:29:03,304 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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 38 [2021-12-06 22:29:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:03,304 INFO L225 Difference]: With dead ends: 102 [2021-12-06 22:29:03,304 INFO L226 Difference]: Without dead ends: 78 [2021-12-06 22:29:03,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=215, Unknown=1, NotChecked=30, Total=306 [2021-12-06 22:29:03,305 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 73 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:03,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 331 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 109 Unchecked, 0.1s Time] [2021-12-06 22:29:03,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-06 22:29:03,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 73. [2021-12-06 22:29:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 72 states have internal predecessors, (92), 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) [2021-12-06 22:29:03,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 92 transitions. [2021-12-06 22:29:03,311 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 92 transitions. Word has length 38 [2021-12-06 22:29:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:03,311 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 92 transitions. [2021-12-06 22:29:03,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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) [2021-12-06 22:29:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 92 transitions. [2021-12-06 22:29:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 22:29:03,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:03,313 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:03,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:29:03,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 22:29:03,513 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:03,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:03,513 INFO L85 PathProgramCache]: Analyzing trace with hash 941641751, now seen corresponding path program 1 times [2021-12-06 22:29:03,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:03,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37970615] [2021-12-06 22:29:03,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:03,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:03,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:03,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37970615] [2021-12-06 22:29:03,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37970615] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:03,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671680120] [2021-12-06 22:29:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:03,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:03,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:03,681 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:03,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:29:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:03,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 22:29:03,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:03,751 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 [2021-12-06 22:29:03,754 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 [2021-12-06 22:29:03,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:03,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:03,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:03,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:03,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:03,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:03,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:03,824 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-06 22:29:03,824 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 15 treesize of output 15 [2021-12-06 22:29:04,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:04,046 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-06 22:29:04,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 35 [2021-12-06 22:29:04,051 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:29:04,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-12-06 22:29:04,057 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:04,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:04,133 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:04,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-06 22:29:04,136 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:04,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2021-12-06 22:29:04,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,187 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_10 (Array Int Int)) (v_arrayElimArr_9 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_22| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_22|) 0)) (and (= (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_22| v_arrayElimArr_10) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) 0) (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_22| v_arrayElimArr_9) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_9 0))) (not (= (select v_arrayElimArr_10 0) |c_ULTIMATE.start_main_~l~0#1.offset|)))) is different from false [2021-12-06 22:29:04,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 22:29:04,436 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:04,437 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 48 [2021-12-06 22:29:04,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:04,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-12-06 22:29:04,443 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:04,443 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2021-12-06 22:29:04,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:04,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-12-06 22:29:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-06 22:29:04,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671680120] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:04,459 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:04,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 17 [2021-12-06 22:29:04,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135111961] [2021-12-06 22:29:04,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:04,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 22:29:04,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 22:29:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=198, Unknown=1, NotChecked=28, Total=272 [2021-12-06 22:29:04,460 INFO L87 Difference]: Start difference. First operand 73 states and 92 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 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) [2021-12-06 22:29:04,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:04,630 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2021-12-06 22:29:04,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:29:04,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 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 38 [2021-12-06 22:29:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:04,631 INFO L225 Difference]: With dead ends: 92 [2021-12-06 22:29:04,631 INFO L226 Difference]: Without dead ends: 56 [2021-12-06 22:29:04,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=246, Unknown=1, NotChecked=32, Total=342 [2021-12-06 22:29:04,632 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 45 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:04,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 350 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-12-06 22:29:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-06 22:29:04,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-06 22:29:04,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.309090909090909) internal successors, (72), 55 states have internal predecessors, (72), 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) [2021-12-06 22:29:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2021-12-06 22:29:04,636 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 38 [2021-12-06 22:29:04,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:04,636 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2021-12-06 22:29:04,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 17 states have internal predecessors, (77), 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) [2021-12-06 22:29:04,637 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-12-06 22:29:04,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 22:29:04,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:04,638 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:04,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:29:04,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:04,839 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:04,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1704598909, now seen corresponding path program 4 times [2021-12-06 22:29:04,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:04,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255603789] [2021-12-06 22:29:04,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:04,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:05,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:05,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255603789] [2021-12-06 22:29:05,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255603789] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:05,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601499672] [2021-12-06 22:29:05,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:29:05,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:05,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:05,178 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:05,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:29:05,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:29:05,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:05,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 22:29:05,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:05,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:05,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:05,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:29:05,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:05,318 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 [2021-12-06 22:29:05,322 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 [2021-12-06 22:29:05,332 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:05,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:05,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:29:05,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:05,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:05,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:05,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:29:05,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:05,434 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:05,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:05,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:29:05,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:05,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:29:05,904 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:29:05,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 57 [2021-12-06 22:29:05,911 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:29:05,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:29:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:05,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:06,147 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:06,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2021-12-06 22:29:06,150 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:06,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2021-12-06 22:29:06,186 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_15 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_27| Int) (v_arrayElimArr_16 (Array Int Int)) (v_ArrVal_570 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_27| v_ArrVal_570) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_27| v_arrayElimArr_15) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_27| v_arrayElimArr_16) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= (select v_arrayElimArr_16 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_27|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_15 0))) (not (= 3 (select .cse0 (+ 8 .cse1))))))) is different from false [2021-12-06 22:29:06,354 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:06,355 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 121 [2021-12-06 22:29:06,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:06,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 91 [2021-12-06 22:29:06,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 86 [2021-12-06 22:29:06,364 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:06,365 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 61 [2021-12-06 22:29:06,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:06,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2021-12-06 22:29:06,512 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:29:06,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 1 [2021-12-06 22:29:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 15 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-06 22:29:06,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601499672] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:06,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:06,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 29 [2021-12-06 22:29:06,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062437017] [2021-12-06 22:29:06,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:06,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:29:06,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:06,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:29:06,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=4, NotChecked=52, Total=812 [2021-12-06 22:29:06,519 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 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) [2021-12-06 22:29:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:17,676 INFO L93 Difference]: Finished difference Result 572 states and 700 transitions. [2021-12-06 22:29:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-12-06 22:29:17,676 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 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 [2021-12-06 22:29:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:17,679 INFO L225 Difference]: With dead ends: 572 [2021-12-06 22:29:17,679 INFO L226 Difference]: Without dead ends: 557 [2021-12-06 22:29:17,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 89 SyntacticMatches, 5 SemanticMatches, 178 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12279 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=4192, Invalid=27670, Unknown=4, NotChecked=354, Total=32220 [2021-12-06 22:29:17,688 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 1327 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 356 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:17,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 691 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 466 Invalid, 0 Unknown, 356 Unchecked, 0.6s Time] [2021-12-06 22:29:17,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-06 22:29:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 150. [2021-12-06 22:29:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.3825503355704698) internal successors, (206), 149 states have internal predecessors, (206), 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) [2021-12-06 22:29:17,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 206 transitions. [2021-12-06 22:29:17,702 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 206 transitions. Word has length 43 [2021-12-06 22:29:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:17,702 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 206 transitions. [2021-12-06 22:29:17,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.793103448275862) internal successors, (110), 29 states have internal predecessors, (110), 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) [2021-12-06 22:29:17,702 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 206 transitions. [2021-12-06 22:29:17,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:29:17,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:17,703 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:17,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:29:17,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 22:29:17,905 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:17,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash -781342395, now seen corresponding path program 2 times [2021-12-06 22:29:17,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:17,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102468469] [2021-12-06 22:29:17,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:17,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:18,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:18,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102468469] [2021-12-06 22:29:18,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102468469] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:18,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638068384] [2021-12-06 22:29:18,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:29:18,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:18,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:18,191 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:18,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:29:18,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:29:18,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:18,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-06 22:29:18,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:18,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:29:18,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:18,319 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 [2021-12-06 22:29:18,322 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 [2021-12-06 22:29:18,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:29:18,334 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:18,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:18,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:18,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:18,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-06 22:29:18,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:29:18,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,434 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:18,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:18,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:18,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:29:18,906 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:29:18,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 57 [2021-12-06 22:29:18,911 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:29:18,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:29:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:18,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:19,130 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:19,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2021-12-06 22:29:19,134 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:19,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2021-12-06 22:29:19,174 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_22 (Array Int Int)) (v_ArrVal_699 (Array Int Int)) (v_arrayElimArr_23 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_32| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_32| v_ArrVal_699) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_32| v_arrayElimArr_22) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_32| v_arrayElimArr_23) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= 2 (select .cse0 (+ .cse1 8)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_22 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_32|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_23 0)))))) is different from false [2021-12-06 22:29:19,358 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:19,359 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 115 [2021-12-06 22:29:19,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:19,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 87 [2021-12-06 22:29:19,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 82 [2021-12-06 22:29:19,369 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:19,369 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 59 [2021-12-06 22:29:19,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:19,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2021-12-06 22:29:19,531 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:29:19,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 1 [2021-12-06 22:29:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-06 22:29:19,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638068384] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:19,536 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:19,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2021-12-06 22:29:19,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322499013] [2021-12-06 22:29:19,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:19,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 22:29:19,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:19,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 22:29:19,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=526, Unknown=6, NotChecked=46, Total=650 [2021-12-06 22:29:19,537 INFO L87 Difference]: Start difference. First operand 150 states and 206 transitions. Second operand has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 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) [2021-12-06 22:29:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:21,284 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2021-12-06 22:29:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 22:29:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 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 [2021-12-06 22:29:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:21,285 INFO L225 Difference]: With dead ends: 249 [2021-12-06 22:29:21,285 INFO L226 Difference]: Without dead ends: 247 [2021-12-06 22:29:21,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=512, Invalid=2036, Unknown=6, NotChecked=98, Total=2652 [2021-12-06 22:29:21,287 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 173 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:21,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 477 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 366 Invalid, 0 Unknown, 118 Unchecked, 0.3s Time] [2021-12-06 22:29:21,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-12-06 22:29:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 166. [2021-12-06 22:29:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.3636363636363635) internal successors, (225), 165 states have internal predecessors, (225), 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) [2021-12-06 22:29:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2021-12-06 22:29:21,299 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 45 [2021-12-06 22:29:21,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:21,299 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2021-12-06 22:29:21,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.1923076923076925) internal successors, (109), 26 states have internal predecessors, (109), 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) [2021-12-06 22:29:21,299 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2021-12-06 22:29:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:29:21,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:21,300 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:21,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:29:21,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 22:29:21,502 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:21,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1975595785, now seen corresponding path program 3 times [2021-12-06 22:29:21,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:21,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811531625] [2021-12-06 22:29:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:21,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:21,768 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 11 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:21,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:21,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811531625] [2021-12-06 22:29:21,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811531625] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:21,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720530903] [2021-12-06 22:29:21,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:29:21,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:21,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:21,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:21,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:29:21,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 22:29:21,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:21,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 80 conjunts are in the unsatisfiable core [2021-12-06 22:29:21,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:21,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:21,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:21,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:21,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:29:21,942 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 [2021-12-06 22:29:21,953 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:21,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:21,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:29:21,964 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 [2021-12-06 22:29:22,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:22,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:22,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:22,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 [2021-12-06 22:29:22,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:22,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:29:22,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:22,075 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:22,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:22,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:29:22,577 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:29:22,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 64 [2021-12-06 22:29:22,583 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:29:22,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-12-06 22:29:22,646 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:22,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:22,818 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:22,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2021-12-06 22:29:22,822 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:22,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2021-12-06 22:29:22,859 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_827 (Array Int Int)) (v_arrayElimArr_29 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_37| Int) (v_arrayElimArr_30 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_37| v_ArrVal_827) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_37| v_arrayElimArr_29) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_37| v_arrayElimArr_30) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_30 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_29 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_37|) 0)) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select .cse0 (+ .cse1 8)) 2))))) is different from false [2021-12-06 22:29:23,027 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:23,028 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 121 [2021-12-06 22:29:23,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:23,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 91 [2021-12-06 22:29:23,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 86 [2021-12-06 22:29:23,037 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:23,037 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 61 [2021-12-06 22:29:23,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:23,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2021-12-06 22:29:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 13 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-12-06 22:29:23,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720530903] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:23,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:23,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 27 [2021-12-06 22:29:23,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987520436] [2021-12-06 22:29:23,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:23,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 22:29:23,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 22:29:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=575, Unknown=3, NotChecked=48, Total=702 [2021-12-06 22:29:23,161 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 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) [2021-12-06 22:29:25,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:25,436 INFO L93 Difference]: Finished difference Result 274 states and 350 transitions. [2021-12-06 22:29:25,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-06 22:29:25,437 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 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 [2021-12-06 22:29:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:25,438 INFO L225 Difference]: With dead ends: 274 [2021-12-06 22:29:25,438 INFO L226 Difference]: Without dead ends: 272 [2021-12-06 22:29:25,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=593, Invalid=2600, Unknown=3, NotChecked=110, Total=3306 [2021-12-06 22:29:25,440 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 114 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:25,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 621 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 573 Invalid, 0 Unknown, 125 Unchecked, 0.4s Time] [2021-12-06 22:29:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-06 22:29:25,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 161. [2021-12-06 22:29:25,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.36875) internal successors, (219), 160 states have internal predecessors, (219), 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) [2021-12-06 22:29:25,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 219 transitions. [2021-12-06 22:29:25,457 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 219 transitions. Word has length 45 [2021-12-06 22:29:25,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:25,457 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 219 transitions. [2021-12-06 22:29:25,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.111111111111111) internal successors, (111), 27 states have internal predecessors, (111), 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) [2021-12-06 22:29:25,457 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 219 transitions. [2021-12-06 22:29:25,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:29:25,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:25,458 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:25,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:29:25,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:29:25,660 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:25,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:25,661 INFO L85 PathProgramCache]: Analyzing trace with hash 169017141, now seen corresponding path program 1 times [2021-12-06 22:29:25,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:25,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413890868] [2021-12-06 22:29:25,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:25,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:29:26,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413890868] [2021-12-06 22:29:26,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413890868] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:26,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525413968] [2021-12-06 22:29:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:26,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:26,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:26,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:26,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:29:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:26,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 22:29:26,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:26,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:26,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:26,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:26,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:29:26,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:26,186 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 [2021-12-06 22:29:26,195 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:26,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:26,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:29:26,205 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 [2021-12-06 22:29:26,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:26,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:26,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:26,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-06 22:29:26,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:26,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:29:26,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:26,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:29:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:26,305 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:26,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:26,751 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:29:26,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 57 [2021-12-06 22:29:26,757 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:29:26,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:29:26,822 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:29:26,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:27,006 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:27,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2021-12-06 22:29:27,009 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:27,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2021-12-06 22:29:27,046 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_952 (Array Int Int)) (v_arrayElimArr_35 (Array Int Int)) (v_arrayElimArr_36 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_42| Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_42| v_ArrVal_952) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_35) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_42| v_arrayElimArr_36) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= (select .cse0 (+ 4 .cse1)) 1)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_35 0))) (not (= 3 (select .cse0 (+ 8 .cse1)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_42|) 0)) (not (= (select v_arrayElimArr_36 0) |c_ULTIMATE.start_main_~l~0#1.offset|))))) is different from false [2021-12-06 22:29:27,226 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:27,226 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 107 [2021-12-06 22:29:27,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:27,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 83 [2021-12-06 22:29:27,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 78 [2021-12-06 22:29:27,236 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:27,236 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2021-12-06 22:29:27,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:27,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-12-06 22:29:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 12 not checked. [2021-12-06 22:29:27,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525413968] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:27,449 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:27,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 29 [2021-12-06 22:29:27,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980547993] [2021-12-06 22:29:27,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:27,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:29:27,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:27,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:29:27,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=683, Unknown=1, NotChecked=52, Total=812 [2021-12-06 22:29:27,450 INFO L87 Difference]: Start difference. First operand 161 states and 219 transitions. Second operand has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 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) [2021-12-06 22:29:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:30,503 INFO L93 Difference]: Finished difference Result 261 states and 337 transitions. [2021-12-06 22:29:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 22:29:30,503 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 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 47 [2021-12-06 22:29:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:30,504 INFO L225 Difference]: With dead ends: 261 [2021-12-06 22:29:30,504 INFO L226 Difference]: Without dead ends: 246 [2021-12-06 22:29:30,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 84 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=823, Invalid=3086, Unknown=1, NotChecked=122, Total=4032 [2021-12-06 22:29:30,506 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 326 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:30,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [326 Valid, 469 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 300 Invalid, 0 Unknown, 104 Unchecked, 0.3s Time] [2021-12-06 22:29:30,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-12-06 22:29:30,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 158. [2021-12-06 22:29:30,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.375796178343949) internal successors, (216), 157 states have internal predecessors, (216), 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) [2021-12-06 22:29:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 216 transitions. [2021-12-06 22:29:30,519 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 216 transitions. Word has length 47 [2021-12-06 22:29:30,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:30,519 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 216 transitions. [2021-12-06 22:29:30,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 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) [2021-12-06 22:29:30,519 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 216 transitions. [2021-12-06 22:29:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:29:30,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:30,520 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:30,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:29:30,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 22:29:30,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash -24761863, now seen corresponding path program 1 times [2021-12-06 22:29:30,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:30,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147964648] [2021-12-06 22:29:30,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:30,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:29:30,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:30,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147964648] [2021-12-06 22:29:30,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147964648] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:30,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168689004] [2021-12-06 22:29:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:30,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:30,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:30,987 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:30,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:29:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:31,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 78 conjunts are in the unsatisfiable core [2021-12-06 22:29:31,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:31,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:29:31,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:31,169 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 [2021-12-06 22:29:31,173 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 [2021-12-06 22:29:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:29:31,187 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:31,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:31,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:31,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:31,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-06 22:29:31,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:31,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:29:31,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:31,303 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:31,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:31,740 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-06 22:29:31,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 57 [2021-12-06 22:29:31,745 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:29:31,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-12-06 22:29:31,812 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:29:31,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:31,992 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:31,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 67 [2021-12-06 22:29:31,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:31,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 61 [2021-12-06 22:29:32,037 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_47| Int) (v_ArrVal_1084 (Array Int Int)) (v_arrayElimArr_42 (Array Int Int)) (v_arrayElimArr_41 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_47| v_ArrVal_1084) (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_47| v_arrayElimArr_41) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (.cse1 (select (select (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_47| v_arrayElimArr_42) |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_47|))) (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_41 0))) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_42 0)))))) is different from false [2021-12-06 22:29:32,204 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:32,204 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 107 [2021-12-06 22:29:32,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:32,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 83 [2021-12-06 22:29:32,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 78 [2021-12-06 22:29:32,214 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:32,214 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2021-12-06 22:29:32,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:32,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2021-12-06 22:29:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 12 not checked. [2021-12-06 22:29:32,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168689004] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:32,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:32,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 29 [2021-12-06 22:29:32,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4018122] [2021-12-06 22:29:32,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:32,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:29:32,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:32,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:29:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=676, Unknown=8, NotChecked=52, Total=812 [2021-12-06 22:29:32,441 INFO L87 Difference]: Start difference. First operand 158 states and 216 transitions. Second operand has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 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) [2021-12-06 22:29:37,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:37,188 INFO L93 Difference]: Finished difference Result 256 states and 331 transitions. [2021-12-06 22:29:37,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 22:29:37,188 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 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 47 [2021-12-06 22:29:37,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:37,189 INFO L225 Difference]: With dead ends: 256 [2021-12-06 22:29:37,189 INFO L226 Difference]: Without dead ends: 241 [2021-12-06 22:29:37,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 85 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=707, Invalid=2481, Unknown=8, NotChecked=110, Total=3306 [2021-12-06 22:29:37,191 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 340 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:37,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 587 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 368 Invalid, 0 Unknown, 112 Unchecked, 0.3s Time] [2021-12-06 22:29:37,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-12-06 22:29:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 67. [2021-12-06 22:29:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 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) [2021-12-06 22:29:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2021-12-06 22:29:37,198 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 47 [2021-12-06 22:29:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:37,198 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-12-06 22:29:37,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.896551724137931) internal successors, (113), 29 states have internal predecessors, (113), 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) [2021-12-06 22:29:37,198 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2021-12-06 22:29:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 22:29:37,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:37,199 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:37,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:29:37,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 22:29:37,400 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:37,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:37,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2085516585, now seen corresponding path program 5 times [2021-12-06 22:29:37,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:37,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483841864] [2021-12-06 22:29:37,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:37,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:37,628 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:37,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:37,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483841864] [2021-12-06 22:29:37,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483841864] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:37,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11277474] [2021-12-06 22:29:37,628 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:29:37,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:37,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:37,629 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:37,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:29:38,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 22:29:38,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:38,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-06 22:29:38,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:38,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:38,102 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 [2021-12-06 22:29:38,104 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 [2021-12-06 22:29:38,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:38,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:38,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:38,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:38,165 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:38,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:38,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:29:38,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:38,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:38,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:38,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:38,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 39 [2021-12-06 22:29:38,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:38,272 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:29:38,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 22:29:38,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:38,279 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:38,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:38,745 INFO L354 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2021-12-06 22:29:38,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 143 treesize of output 81 [2021-12-06 22:29:38,753 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:29:38,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 28 [2021-12-06 22:29:38,760 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:38,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:38,837 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:38,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2021-12-06 22:29:38,840 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:38,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2021-12-06 22:29:38,897 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_49 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_53| Int) (v_arrayElimArr_50 (Array Int Int))) (or (let ((.cse0 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_53| v_arrayElimArr_50)) (.cse3 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_53| v_arrayElimArr_49))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= (select (select .cse3 .cse1) .cse2) 0)))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_50 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_53|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_49 0))))) is different from false [2021-12-06 22:29:39,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:39,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 111 [2021-12-06 22:29:39,167 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:39,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 102 [2021-12-06 22:29:39,322 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_49 (Array Int Int)) (v_arrayElimArr_51 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_53| Int) (v_arrayElimArr_50 (Array Int Int)) (v_arrayElimArr_52 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_50 0)) (.cse0 (select v_arrayElimArr_49 0))) (or (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_53|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_51 0))) (not (= .cse1 0)) (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_52) |v_ULTIMATE.start_main_~l~0#1.base_53| v_arrayElimArr_50)) (.cse2 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_51) |v_ULTIMATE.start_main_~l~0#1.base_53| v_arrayElimArr_49))) (let ((.cse3 (select (select .cse2 .cse0) .cse1)) (.cse4 (select (select .cse5 .cse0) .cse1))) (and (= (select (select .cse2 .cse3) .cse4) 0) (= (select (select .cse5 .cse3) .cse4) 0)))) (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_52 0)))))) is different from false [2021-12-06 22:29:40,049 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:40,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 142 [2021-12-06 22:29:40,054 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:40,054 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 131 treesize of output 106 [2021-12-06 22:29:40,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:40,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:40,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:40,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:40,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:40,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 44 [2021-12-06 22:29:40,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:40,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:40,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:40,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:40,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:40,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2021-12-06 22:29:40,078 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:29:40,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11277474] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:40,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:40,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 20 [2021-12-06 22:29:40,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753698153] [2021-12-06 22:29:40,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:40,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 22:29:40,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:40,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:29:40,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=263, Unknown=2, NotChecked=66, Total=380 [2021-12-06 22:29:40,079 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 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) [2021-12-06 22:29:40,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:40,343 INFO L93 Difference]: Finished difference Result 133 states and 164 transitions. [2021-12-06 22:29:40,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:29:40,343 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 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 51 [2021-12-06 22:29:40,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:40,344 INFO L225 Difference]: With dead ends: 133 [2021-12-06 22:29:40,344 INFO L226 Difference]: Without dead ends: 109 [2021-12-06 22:29:40,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=394, Unknown=2, NotChecked=82, Total=552 [2021-12-06 22:29:40,345 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 46 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:40,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 677 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 133 Invalid, 0 Unknown, 263 Unchecked, 0.1s Time] [2021-12-06 22:29:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-06 22:29:40,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 100. [2021-12-06 22:29:40,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 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) [2021-12-06 22:29:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2021-12-06 22:29:40,354 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 51 [2021-12-06 22:29:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:40,355 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2021-12-06 22:29:40,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 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) [2021-12-06 22:29:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2021-12-06 22:29:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 22:29:40,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:40,355 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:40,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:29:40,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 22:29:40,557 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:40,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1891737581, now seen corresponding path program 2 times [2021-12-06 22:29:40,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:40,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791232268] [2021-12-06 22:29:40,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:40,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:40,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:40,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791232268] [2021-12-06 22:29:40,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791232268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:40,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017833530] [2021-12-06 22:29:40,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:29:40,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:40,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:40,817 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:40,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:29:40,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:29:40,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:40,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 22:29:40,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:40,927 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 [2021-12-06 22:29:40,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:40,931 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 [2021-12-06 22:29:40,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:40,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:40,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:40,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:40,998 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:40,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:41,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:29:41,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:41,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:41,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:41,104 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:29:41,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 22:29:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:41,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2021-12-06 22:29:41,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:41,114 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:41,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:41,625 INFO L354 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2021-12-06 22:29:41,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 143 treesize of output 81 [2021-12-06 22:29:41,634 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:29:41,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 28 [2021-12-06 22:29:41,641 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:41,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:41,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:41,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2021-12-06 22:29:41,787 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:41,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2021-12-06 22:29:41,847 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_60| Int) (v_arrayElimArr_59 (Array Int Int)) (v_arrayElimArr_60 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_60|) 0)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_60| v_arrayElimArr_60)) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_60| v_arrayElimArr_59))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= (select (select .cse3 .cse1) .cse2) 0)))) (not (= (select v_arrayElimArr_59 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_60 0))))) is different from false [2021-12-06 22:29:42,121 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:42,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 103 [2021-12-06 22:29:42,125 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:42,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 94 [2021-12-06 22:29:42,284 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_60| Int) (v_arrayElimArr_59 (Array Int Int)) (v_arrayElimArr_60 (Array Int Int)) (v_arrayElimArr_62 (Array Int Int)) (v_arrayElimArr_61 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_59 0))) (or (not (= (select |c_#valid| .cse0) 0)) (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_61) |v_ULTIMATE.start_main_~l~0#1.base_60| v_arrayElimArr_60)) (.cse4 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_62) |v_ULTIMATE.start_main_~l~0#1.base_60| v_arrayElimArr_59))) (let ((.cse2 (select (select .cse4 .cse0) 0)) (.cse3 (select (select .cse1 .cse0) 0))) (and (= (select (select .cse1 .cse2) .cse3) 0) (= (select (select .cse4 .cse2) .cse3) 0)))) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_60|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_62 0))) (not (= (select v_arrayElimArr_60 0) 0)) (not (= (select v_arrayElimArr_61 0) |c_ULTIMATE.start_main_~l~0#1.offset|))))) is different from false [2021-12-06 22:29:43,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:43,027 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 171 treesize of output 142 [2021-12-06 22:29:43,032 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:43,032 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 100 [2021-12-06 22:29:43,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:43,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:43,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:43,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:43,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 40 [2021-12-06 22:29:43,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:43,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 171 [2021-12-06 22:29:43,047 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 156 [2021-12-06 22:29:43,050 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2021-12-06 22:29:43,065 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:29:43,065 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 22 treesize of output 18 [2021-12-06 22:29:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:29:43,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017833530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:43,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:43,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 24 [2021-12-06 22:29:43,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215080234] [2021-12-06 22:29:43,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:43,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 22:29:43,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:43,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 22:29:43,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=403, Unknown=2, NotChecked=82, Total=552 [2021-12-06 22:29:43,091 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 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) [2021-12-06 22:29:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:43,463 INFO L93 Difference]: Finished difference Result 136 states and 167 transitions. [2021-12-06 22:29:43,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:29:43,463 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 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 51 [2021-12-06 22:29:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:43,464 INFO L225 Difference]: With dead ends: 136 [2021-12-06 22:29:43,464 INFO L226 Difference]: Without dead ends: 101 [2021-12-06 22:29:43,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=556, Unknown=2, NotChecked=98, Total=756 [2021-12-06 22:29:43,465 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 88 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 269 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:43,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 653 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 181 Invalid, 0 Unknown, 269 Unchecked, 0.2s Time] [2021-12-06 22:29:43,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-06 22:29:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2021-12-06 22:29:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 93 states have internal predecessors, (117), 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) [2021-12-06 22:29:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2021-12-06 22:29:43,474 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 51 [2021-12-06 22:29:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:43,474 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2021-12-06 22:29:43,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 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) [2021-12-06 22:29:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2021-12-06 22:29:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 22:29:43,474 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:43,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:43,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:29:43,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:29:43,676 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:43,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:43,677 INFO L85 PathProgramCache]: Analyzing trace with hash 207395821, now seen corresponding path program 3 times [2021-12-06 22:29:43,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:43,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095259755] [2021-12-06 22:29:43,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:43,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:43,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:43,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095259755] [2021-12-06 22:29:43,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095259755] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:43,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379304025] [2021-12-06 22:29:43,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:29:43,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:43,860 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:43,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:29:44,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 22:29:44,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:44,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 22:29:44,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:44,151 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 [2021-12-06 22:29:44,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:44,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 [2021-12-06 22:29:44,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:44,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:44,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:44,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:44,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:44,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:44,213 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:44,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:44,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:44,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:44,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:44,309 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:29:44,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 22:29:44,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:44,318 INFO L354 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2021-12-06 22:29:44,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2021-12-06 22:29:44,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:44,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2021-12-06 22:29:44,799 INFO L354 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2021-12-06 22:29:44,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 143 treesize of output 81 [2021-12-06 22:29:44,810 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:29:44,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 28 [2021-12-06 22:29:44,818 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:44,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:44,905 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:44,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 65 [2021-12-06 22:29:44,908 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:44,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 56 [2021-12-06 22:29:44,966 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_69 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_67| Int) (v_arrayElimArr_70 (Array Int Int))) (or (not (= (select v_arrayElimArr_69 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_67|) 0)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_67| v_arrayElimArr_70)) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_67| v_arrayElimArr_69))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= (select (select .cse3 .cse1) .cse2) 0)))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_70 0))))) is different from false [2021-12-06 22:29:45,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:45,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 103 [2021-12-06 22:29:45,220 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:45,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 94 [2021-12-06 22:29:45,380 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_69 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_67| Int) (v_arrayElimArr_71 (Array Int Int)) (v_arrayElimArr_70 (Array Int Int)) (v_arrayElimArr_72 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_69 0))) (or (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_67|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_71 0))) (let ((.cse1 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_71) |v_ULTIMATE.start_main_~l~0#1.base_67| v_arrayElimArr_70)) (.cse4 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_72) |v_ULTIMATE.start_main_~l~0#1.base_67| v_arrayElimArr_69))) (let ((.cse2 (select (select .cse4 .cse0) 0)) (.cse3 (select (select .cse1 .cse0) 0))) (and (= (select (select .cse1 .cse2) .cse3) 0) (= (select (select .cse4 .cse2) .cse3) 0)))) (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_70 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_72 0)))))) is different from false [2021-12-06 22:29:46,089 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:46,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 134 [2021-12-06 22:29:46,094 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:46,095 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 123 treesize of output 98 [2021-12-06 22:29:46,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:46,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:46,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:46,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:46,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 40 [2021-12-06 22:29:46,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:46,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 79 [2021-12-06 22:29:46,107 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 88 [2021-12-06 22:29:46,109 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 68 [2021-12-06 22:29:46,115 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:29:46,116 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 22 treesize of output 18 [2021-12-06 22:29:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:29:46,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379304025] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:46,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:46,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 20 [2021-12-06 22:29:46,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391085036] [2021-12-06 22:29:46,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:46,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 22:29:46,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 22:29:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=263, Unknown=2, NotChecked=66, Total=380 [2021-12-06 22:29:46,147 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 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) [2021-12-06 22:29:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:46,424 INFO L93 Difference]: Finished difference Result 123 states and 150 transitions. [2021-12-06 22:29:46,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:29:46,424 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 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 51 [2021-12-06 22:29:46,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:46,425 INFO L225 Difference]: With dead ends: 123 [2021-12-06 22:29:46,425 INFO L226 Difference]: Without dead ends: 79 [2021-12-06 22:29:46,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 95 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=357, Unknown=2, NotChecked=78, Total=506 [2021-12-06 22:29:46,426 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 40 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:46,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 628 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 178 Unchecked, 0.2s Time] [2021-12-06 22:29:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-12-06 22:29:46,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2021-12-06 22:29:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.295774647887324) internal successors, (92), 71 states have internal predecessors, (92), 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) [2021-12-06 22:29:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2021-12-06 22:29:46,433 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 51 [2021-12-06 22:29:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:46,433 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2021-12-06 22:29:46,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.05) internal successors, (101), 20 states have internal predecessors, (101), 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) [2021-12-06 22:29:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2021-12-06 22:29:46,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 22:29:46,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:46,433 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:46,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 22:29:46,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:46,635 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1013477057, now seen corresponding path program 6 times [2021-12-06 22:29:46,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:46,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767925119] [2021-12-06 22:29:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:46,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:47,012 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:47,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:47,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767925119] [2021-12-06 22:29:47,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767925119] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:47,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811062752] [2021-12-06 22:29:47,012 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 22:29:47,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:47,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:47,013 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:47,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 22:29:47,373 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 22:29:47,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:29:47,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 22:29:47,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:47,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:29:47,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:29:47,443 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 [2021-12-06 22:29:47,452 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:29:47,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:29:47,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:29:47,461 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 [2021-12-06 22:29:47,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:47,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:29:47,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:29:47,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,558 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:29:47,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:29:47,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:29:47,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:47,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:29:47,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,702 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:29:47,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:29:47,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:29:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,716 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:29:47,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:29:47,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:47,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:29:48,712 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:29:48,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:29:48,724 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:29:48,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:29:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:29:48,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:29:49,072 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:49,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:29:49,075 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:49,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:29:49,110 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_79 (Array Int Int)) (v_ArrVal_1646 (Array Int Int)) (v_arrayElimArr_80 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_74| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_80)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_79))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_74| v_ArrVal_1646) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_74|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_80 0))) (not (= (select .cse0 (+ .cse1 8)) 3)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_79 0))) (not (= (select .cse0 (+ .cse1 4)) 1))))))) is different from false [2021-12-06 22:29:49,278 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:49,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 237 [2021-12-06 22:29:49,282 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:49,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 219 [2021-12-06 22:29:49,374 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_79 (Array Int Int)) (v_ArrVal_1646 (Array Int Int)) (v_arrayElimArr_80 (Array Int Int)) (v_arrayElimArr_82 (Array Int Int)) (v_arrayElimArr_81 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_74| Int) (v_ArrVal_1639 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_79 0))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_82) |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_80)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_81) |v_ULTIMATE.start_main_~l~0#1.base_74| v_arrayElimArr_79)) (.cse3 (select v_arrayElimArr_80 0))) (let ((.cse5 (select (select .cse7 .cse2) .cse3)) (.cse6 (select (select .cse4 .cse2) .cse3))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_1639) |v_ULTIMATE.start_main_~l~0#1.base_74| v_ArrVal_1646) (select (select .cse7 .cse5) .cse6))) (.cse1 (select (select .cse4 .cse5) .cse6))) (or (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select |c_#valid| .cse2) 0)) (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_81 0))) (not (= .cse3 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_82 0))) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_74|) 0)))))))) is different from false [2021-12-06 22:29:49,784 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:49,784 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 305 [2021-12-06 22:29:49,789 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:29:49,790 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 233 [2021-12-06 22:29:49,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:49,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:49,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:49,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:49,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:49,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 115 [2021-12-06 22:29:49,800 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2021-12-06 22:29:49,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 104 [2021-12-06 22:29:49,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:49,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:49,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:29:49,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:29:49,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 43 [2021-12-06 22:29:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:29:50,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811062752] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:29:50,072 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:29:50,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 35 [2021-12-06 22:29:50,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693865246] [2021-12-06 22:29:50,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:29:50,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 22:29:50,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:50,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 22:29:50,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=971, Unknown=3, NotChecked=126, Total=1190 [2021-12-06 22:29:50,073 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 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) [2021-12-06 22:30:01,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:01,266 INFO L93 Difference]: Finished difference Result 142 states and 172 transitions. [2021-12-06 22:30:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 22:30:01,266 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 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 56 [2021-12-06 22:30:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:01,267 INFO L225 Difference]: With dead ends: 142 [2021-12-06 22:30:01,267 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 22:30:01,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 100 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=890, Invalid=3945, Unknown=3, NotChecked=274, Total=5112 [2021-12-06 22:30:01,268 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 346 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:01,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 858 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 442 Invalid, 0 Unknown, 160 Unchecked, 0.5s Time] [2021-12-06 22:30:01,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 22:30:01,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 85. [2021-12-06 22:30:01,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 84 states have internal predecessors, (107), 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) [2021-12-06 22:30:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2021-12-06 22:30:01,276 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 56 [2021-12-06 22:30:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:01,276 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2021-12-06 22:30:01,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 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) [2021-12-06 22:30:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2021-12-06 22:30:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 22:30:01,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:01,277 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:01,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 22:30:01,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:01,478 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:30:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:01,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1207256061, now seen corresponding path program 4 times [2021-12-06 22:30:01,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:01,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302577305] [2021-12-06 22:30:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:01,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 19 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:01,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:01,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302577305] [2021-12-06 22:30:01,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302577305] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:01,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101864840] [2021-12-06 22:30:01,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:30:01,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:01,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:01,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 22:30:02,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:30:02,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:30:02,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-06 22:30:02,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:02,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:02,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:30:02,172 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 [2021-12-06 22:30:02,175 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 [2021-12-06 22:30:02,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:30:02,187 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:30:02,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:30:02,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:02,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:02,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:30:02,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,289 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:30:02,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:30:02,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:30:02,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:30:02,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:02,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:02,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,449 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:30:02,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:30:02,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:30:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,463 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:30:02,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:30:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:02,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:30:03,497 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:30:03,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:30:03,507 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:30:03,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:30:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:03,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:03,902 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:03,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:30:03,906 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:03,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:30:03,944 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1824 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_81| Int) (v_arrayElimArr_89 (Array Int Int)) (v_arrayElimArr_90 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_81| v_arrayElimArr_90)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_81| v_arrayElimArr_89))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_81| v_ArrVal_1824) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select .cse0 (+ .cse1 8)) 3)) (not (= (select v_arrayElimArr_90 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_89 0))) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_81|) 0))))))) is different from false [2021-12-06 22:30:04,129 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:04,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:30:04,133 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:04,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:30:04,241 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1824 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_81| Int) (v_arrayElimArr_89 (Array Int Int)) (v_arrayElimArr_91 (Array Int Int)) (v_arrayElimArr_90 (Array Int Int)) (v_arrayElimArr_92 (Array Int Int)) (v_ArrVal_1814 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_89 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_91) |v_ULTIMATE.start_main_~l~0#1.base_81| v_arrayElimArr_90)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_92) |v_ULTIMATE.start_main_~l~0#1.base_81| v_arrayElimArr_89))) (let ((.cse4 (select (select .cse6 .cse2) 0)) (.cse5 (select (select .cse3 .cse2) 0))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_1814) |v_ULTIMATE.start_main_~l~0#1.base_81| v_ArrVal_1824) (select (select .cse6 .cse4) .cse5))) (.cse1 (select (select .cse3 .cse4) .cse5))) (or (not (= (select v_arrayElimArr_90 0) 0)) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_91 0))) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_81|) 0)) (not (= 0 (select |c_#valid| .cse2))) (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_92 0))))))))) is different from false [2021-12-06 22:30:04,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:04,719 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 289 [2021-12-06 22:30:04,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:04,725 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 217 [2021-12-06 22:30:04,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:04,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:04,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:04,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:04,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 107 [2021-12-06 22:30:04,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:04,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 687 treesize of output 649 [2021-12-06 22:30:04,744 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 682 treesize of output 572 [2021-12-06 22:30:04,750 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 566 treesize of output 466 [2021-12-06 22:30:05,290 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:30:05,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 1 [2021-12-06 22:30:05,294 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:30:05,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101864840] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:05,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:05,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 37 [2021-12-06 22:30:05,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954895803] [2021-12-06 22:30:05,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:05,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 22:30:05,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:05,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 22:30:05,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1098, Unknown=2, NotChecked=134, Total=1332 [2021-12-06 22:30:05,296 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 37 states, 37 states have (on average 4.027027027027027) internal successors, (149), 37 states have internal predecessors, (149), 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) [2021-12-06 22:30:09,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:09,924 INFO L93 Difference]: Finished difference Result 155 states and 188 transitions. [2021-12-06 22:30:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-12-06 22:30:09,925 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.027027027027027) internal successors, (149), 37 states have internal predecessors, (149), 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 56 [2021-12-06 22:30:09,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:09,926 INFO L225 Difference]: With dead ends: 155 [2021-12-06 22:30:09,926 INFO L226 Difference]: Without dead ends: 140 [2021-12-06 22:30:09,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 101 SyntacticMatches, 6 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=856, Invalid=3842, Unknown=2, NotChecked=270, Total=4970 [2021-12-06 22:30:09,926 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 391 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 279 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:09,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 909 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 444 Invalid, 0 Unknown, 279 Unchecked, 0.4s Time] [2021-12-06 22:30:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-06 22:30:09,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 88. [2021-12-06 22:30:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 87 states have internal predecessors, (111), 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) [2021-12-06 22:30:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 111 transitions. [2021-12-06 22:30:09,935 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 111 transitions. Word has length 56 [2021-12-06 22:30:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:09,935 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 111 transitions. [2021-12-06 22:30:09,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.027027027027027) internal successors, (149), 37 states have internal predecessors, (149), 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) [2021-12-06 22:30:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 111 transitions. [2021-12-06 22:30:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 22:30:09,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:09,936 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:09,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 22:30:10,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 22:30:10,137 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:30:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1403369475, now seen corresponding path program 5 times [2021-12-06 22:30:10,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:10,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217381275] [2021-12-06 22:30:10,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:10,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:10,515 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:10,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:10,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217381275] [2021-12-06 22:30:10,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217381275] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:10,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893883209] [2021-12-06 22:30:10,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:30:10,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:10,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:10,517 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:10,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 22:30:11,929 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 22:30:11,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:30:11,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 112 conjunts are in the unsatisfiable core [2021-12-06 22:30:11,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:11,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:30:11,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:11,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:11,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:11,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:30:12,008 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 [2021-12-06 22:30:12,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:30:12,019 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:30:12,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:30:12,026 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 [2021-12-06 22:30:12,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:12,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:12,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-06 22:30:12,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:30:12,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,132 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:30:12,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:30:12,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:30:12,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:12,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:30:12,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,276 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:30:12,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:30:12,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:30:12,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:30:12,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:12,293 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:30:12,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:30:13,331 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:30:13,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:30:13,349 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:30:13,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:30:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:30:13,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:30:13,696 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:13,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:30:13,700 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:13,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:30:13,750 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1999 (Array Int Int)) (v_arrayElimArr_101 (Array Int Int)) (v_arrayElimArr_100 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_88| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_88| v_arrayElimArr_101)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_88| v_arrayElimArr_100))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_88| v_ArrVal_1999) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_88|) 0)) (not (= (select .cse0 (+ .cse1 8)) 3)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_101 0))) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_100 0)))))))) is different from false [2021-12-06 22:30:13,931 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:13,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:30:13,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:13,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:30:14,044 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1989 (Array Int Int)) (v_ArrVal_1999 (Array Int Int)) (v_arrayElimArr_103 (Array Int Int)) (v_arrayElimArr_102 (Array Int Int)) (v_arrayElimArr_101 (Array Int Int)) (v_arrayElimArr_100 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_88| Int)) (let ((.cse0 (select v_arrayElimArr_100 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_102) |v_ULTIMATE.start_main_~l~0#1.base_88| v_arrayElimArr_101)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_103) |v_ULTIMATE.start_main_~l~0#1.base_88| v_arrayElimArr_100))) (let ((.cse4 (select (select .cse6 .cse0) 0)) (.cse5 (select (select .cse3 .cse0) 0))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_1989) |v_ULTIMATE.start_main_~l~0#1.base_88| v_ArrVal_1999) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_102 0))) (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_101 0) 0)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_88|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_103 0))) (not (= (select .cse1 (+ .cse2 4)) 1)) (not (= 3 (select .cse1 (+ .cse2 8)))))))))) is different from false [2021-12-06 22:30:14,458 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:14,458 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 289 [2021-12-06 22:30:14,464 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:30:14,464 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 217 [2021-12-06 22:30:14,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:14,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:14,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:14,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:30:14,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 107 [2021-12-06 22:30:14,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:30:14,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 305 [2021-12-06 22:30:14,480 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 338 treesize of output 284 [2021-12-06 22:30:14,484 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 234 [2021-12-06 22:30:14,910 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:30:14,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893883209] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:30:14,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:30:14,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 35 [2021-12-06 22:30:14,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745048538] [2021-12-06 22:30:14,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:30:14,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 22:30:14,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:14,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 22:30:14,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=973, Unknown=2, NotChecked=126, Total=1190 [2021-12-06 22:30:14,911 INFO L87 Difference]: Start difference. First operand 88 states and 111 transitions. Second operand has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 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) [2021-12-06 22:31:05,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:05,277 INFO L93 Difference]: Finished difference Result 1584 states and 1911 transitions. [2021-12-06 22:31:05,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 401 states. [2021-12-06 22:31:05,277 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 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 56 [2021-12-06 22:31:05,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:05,283 INFO L225 Difference]: With dead ends: 1584 [2021-12-06 22:31:05,283 INFO L226 Difference]: Without dead ends: 1569 [2021-12-06 22:31:05,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 123 SyntacticMatches, 35 SemanticMatches, 429 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 90630 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=16298, Invalid=167320, Unknown=2, NotChecked=1710, Total=185330 [2021-12-06 22:31:05,296 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 3362 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3362 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 2579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1340 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:05,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3362 Valid, 1379 Invalid, 2579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 697 Invalid, 0 Unknown, 1340 Unchecked, 1.2s Time] [2021-12-06 22:31:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2021-12-06 22:31:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 245. [2021-12-06 22:31:05,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4139344262295082) internal successors, (345), 244 states have internal predecessors, (345), 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) [2021-12-06 22:31:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2021-12-06 22:31:05,352 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 56 [2021-12-06 22:31:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:05,352 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2021-12-06 22:31:05,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.257142857142857) internal successors, (149), 35 states have internal predecessors, (149), 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) [2021-12-06 22:31:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2021-12-06 22:31:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 22:31:05,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:05,353 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:05,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-06 22:31:05,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:31:05,555 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:31:05,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1512229753, now seen corresponding path program 4 times [2021-12-06 22:31:05,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:31:05,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908175128] [2021-12-06 22:31:05,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:05,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:31:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:05,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:31:05,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908175128] [2021-12-06 22:31:05,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908175128] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:31:05,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21321484] [2021-12-06 22:31:05,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:31:05,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:31:05,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:31:05,894 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:31:05,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 22:31:06,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:31:06,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:31:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-06 22:31:06,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:06,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:31:06,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:06,087 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 [2021-12-06 22:31:06,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:31:06,098 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:31:06,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:31:06,106 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 [2021-12-06 22:31:06,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:06,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:06,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-06 22:31:06,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:31:06,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,208 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:31:06,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:31:06,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:31:06,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:06,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:06,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,363 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:31:06,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:31:06,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:31:06,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:06,379 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:31:06,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:31:06,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:31:07,403 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:31:07,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:31:07,414 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:31:07,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:31:07,501 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:07,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:31:07,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:07,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:31:07,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:07,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:31:07,666 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_95| Int) (v_arrayElimArr_110 (Array Int Int)) (v_ArrVal_2169 (Array Int Int)) (v_arrayElimArr_111 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_95| v_arrayElimArr_111)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_95| v_arrayElimArr_110))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_95| v_ArrVal_2169) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_95|) 0)) (not (= 2 (select .cse0 (+ .cse1 8)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_110 0))) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select v_arrayElimArr_111 0) |c_ULTIMATE.start_main_~l~0#1.offset|))))))) is different from false [2021-12-06 22:31:07,839 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:07,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:31:07,844 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:07,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:31:07,946 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_95| Int) (v_arrayElimArr_110 (Array Int Int)) (v_ArrVal_2169 (Array Int Int)) (v_arrayElimArr_113 (Array Int Int)) (v_arrayElimArr_112 (Array Int Int)) (v_arrayElimArr_111 (Array Int Int)) (v_ArrVal_2165 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_110 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_112) |v_ULTIMATE.start_main_~l~0#1.base_95| v_arrayElimArr_111)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_113) |v_ULTIMATE.start_main_~l~0#1.base_95| v_arrayElimArr_110))) (let ((.cse4 (select (select .cse6 .cse0) 0)) (.cse5 (select (select .cse3 .cse0) 0))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_2165) |v_ULTIMATE.start_main_~l~0#1.base_95| v_ArrVal_2169) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_112 0))) (not (= 0 (select .cse1 (+ .cse2 4)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_113 0))) (not (= (select v_arrayElimArr_111 0) 0)) (not (= 2 (select .cse1 (+ .cse2 8)))) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_95|) 0)))))))) is different from false [2021-12-06 22:31:08,343 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:08,343 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 289 [2021-12-06 22:31:08,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:08,348 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 217 [2021-12-06 22:31:08,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:08,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:08,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:08,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:08,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 107 [2021-12-06 22:31:08,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:08,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 687 treesize of output 649 [2021-12-06 22:31:08,367 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 682 treesize of output 572 [2021-12-06 22:31:08,372 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 566 treesize of output 466 [2021-12-06 22:31:08,844 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:31:08,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 1 [2021-12-06 22:31:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:31:08,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21321484] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:31:08,848 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:31:08,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 29 [2021-12-06 22:31:08,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39031118] [2021-12-06 22:31:08,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:31:08,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:31:08,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:31:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=630, Unknown=4, NotChecked=102, Total=812 [2021-12-06 22:31:08,849 INFO L87 Difference]: Start difference. First operand 245 states and 345 transitions. Second operand has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 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) [2021-12-06 22:31:51,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:51,728 INFO L93 Difference]: Finished difference Result 1812 states and 2174 transitions. [2021-12-06 22:31:51,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 510 states. [2021-12-06 22:31:51,728 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 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 58 [2021-12-06 22:31:51,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:51,735 INFO L225 Difference]: With dead ends: 1812 [2021-12-06 22:31:51,735 INFO L226 Difference]: Without dead ends: 1810 [2021-12-06 22:31:51,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 668 GetRequests, 136 SyntacticMatches, 10 SemanticMatches, 522 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 131110 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=20540, Invalid=251426, Unknown=4, NotChecked=2082, Total=274052 [2021-12-06 22:31:51,746 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 1601 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 910 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1601 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 910 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1692 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:51,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1601 Valid, 950 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [910 Valid, 548 Invalid, 0 Unknown, 1692 Unchecked, 1.2s Time] [2021-12-06 22:31:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2021-12-06 22:31:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 369. [2021-12-06 22:31:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 368 states have (on average 1.358695652173913) internal successors, (500), 368 states have internal predecessors, (500), 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) [2021-12-06 22:31:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 500 transitions. [2021-12-06 22:31:51,820 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 500 transitions. Word has length 58 [2021-12-06 22:31:51,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:51,820 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 500 transitions. [2021-12-06 22:31:51,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.448275862068965) internal successors, (129), 29 states have internal predecessors, (129), 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) [2021-12-06 22:31:51,820 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 500 transitions. [2021-12-06 22:31:51,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 22:31:51,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:51,821 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:51,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-06 22:31:52,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:31:52,023 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:31:52,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1244708427, now seen corresponding path program 5 times [2021-12-06 22:31:52,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:31:52,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526453269] [2021-12-06 22:31:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:52,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:31:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:52,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:31:52,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526453269] [2021-12-06 22:31:52,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526453269] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:31:52,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760558545] [2021-12-06 22:31:52,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:31:52,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:31:52,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:31:52,420 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:31:52,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 22:31:53,668 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 22:31:53,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:31:53,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 124 conjunts are in the unsatisfiable core [2021-12-06 22:31:53,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:53,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:31:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:53,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:31:53,751 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 [2021-12-06 22:31:53,755 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 [2021-12-06 22:31:53,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:53,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:31:53,767 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:31:53,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:31:53,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:53,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:53,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:53,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:31:53,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:53,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:31:53,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:53,886 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:31:53,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:31:53,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:31:54,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:54,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:31:54,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:54,029 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:31:54,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:31:54,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:54,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:54,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:54,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:31:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:54,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:54,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:54,044 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:31:54,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:31:54,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:31:55,633 INFO L354 Elim1Store]: treesize reduction 85, result has 11.5 percent of original size [2021-12-06 22:31:55,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 240 treesize of output 122 [2021-12-06 22:31:55,649 INFO L354 Elim1Store]: treesize reduction 74, result has 8.6 percent of original size [2021-12-06 22:31:55,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 67 treesize of output 43 [2021-12-06 22:31:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:31:55,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:31:56,410 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 165 [2021-12-06 22:31:56,415 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 144 [2021-12-06 22:31:56,465 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_121 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_102| Int) (v_ArrVal_2346 (Array Int Int)) (v_arrayElimArr_122 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_102| v_arrayElimArr_122)) (.cse6 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_102| v_arrayElimArr_121))) (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_102| v_ArrVal_2346)) (.cse1 (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse2 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select .cse0 (select (select .cse6 .cse1) .cse2))) (.cse4 (select (select .cse5 .cse1) .cse2))) (or (not (= (select (select .cse0 .cse1) (+ .cse2 4)) 0)) (not (= 2 (select .cse3 (+ .cse4 8)))) (not (= (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_122 0))) (not (= (select v_ArrVal_2346 4) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_102|) 0)) (not (= (select .cse3 (+ .cse4 4)) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_121 0)))))))) is different from false [2021-12-06 22:31:56,719 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 285 treesize of output 270 [2021-12-06 22:31:56,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:56,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 264 treesize of output 249 [2021-12-06 22:31:56,882 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_121 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_102| Int) (v_ArrVal_2346 (Array Int Int)) (v_arrayElimArr_124 (Array Int Int)) (v_arrayElimArr_123 (Array Int Int)) (v_arrayElimArr_122 (Array Int Int)) (v_ArrVal_2340 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_121 0))) (let ((.cse6 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_124) |v_ULTIMATE.start_main_~l~0#1.base_102| v_arrayElimArr_122)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_123) |v_ULTIMATE.start_main_~l~0#1.base_102| v_arrayElimArr_121))) (let ((.cse3 (store (store |c_#memory_int| .cse2 v_ArrVal_2340) |v_ULTIMATE.start_main_~l~0#1.base_102| v_ArrVal_2346)) (.cse4 (select (select .cse7 .cse2) 0)) (.cse5 (select (select .cse6 .cse2) 0))) (let ((.cse0 (select .cse3 (select (select .cse7 .cse4) .cse5))) (.cse1 (select (select .cse6 .cse4) .cse5))) (or (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_102|) 0)) (not (= (select v_arrayElimArr_124 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select v_arrayElimArr_122 0) 0)) (not (= (select (select .cse3 .cse4) (+ 4 .cse5)) 0)) (not (= (select v_ArrVal_2346 4) 1)) (not (= (select |c_#valid| .cse2) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_123 0))) (not (= (select (select .cse3 .cse2) 4) 1)))))))) is different from false [2021-12-06 22:31:57,643 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:57,644 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 426 treesize of output 352 [2021-12-06 22:31:57,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:31:57,651 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 342 treesize of output 268 [2021-12-06 22:31:57,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:57,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:57,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:57,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:31:57,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 146 [2021-12-06 22:31:57,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 212 treesize of output 190 [2021-12-06 22:31:57,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 146 [2021-12-06 22:31:57,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:57,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:57,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:31:57,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2021-12-06 22:31:57,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-12-06 22:31:58,691 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:31:58,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760558545] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:31:58,692 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:31:58,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 44 [2021-12-06 22:31:58,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894406126] [2021-12-06 22:31:58,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:31:58,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 22:31:58,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 22:31:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1542, Unknown=10, NotChecked=162, Total=1892 [2021-12-06 22:31:58,693 INFO L87 Difference]: Start difference. First operand 369 states and 500 transitions. Second operand has 44 states, 44 states have (on average 3.4318181818181817) internal successors, (151), 44 states have internal predecessors, (151), 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) [2021-12-06 22:32:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:01,385 INFO L93 Difference]: Finished difference Result 586 states and 755 transitions. [2021-12-06 22:32:01,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 22:32:01,385 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.4318181818181817) internal successors, (151), 44 states have internal predecessors, (151), 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 58 [2021-12-06 22:32:01,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:01,387 INFO L225 Difference]: With dead ends: 586 [2021-12-06 22:32:01,387 INFO L226 Difference]: Without dead ends: 584 [2021-12-06 22:32:01,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=552, Invalid=3606, Unknown=10, NotChecked=254, Total=4422 [2021-12-06 22:32:01,388 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 234 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 328 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:01,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 816 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 322 Invalid, 0 Unknown, 328 Unchecked, 0.4s Time] [2021-12-06 22:32:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-12-06 22:32:01,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 366. [2021-12-06 22:32:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 365 states have (on average 1.3616438356164384) internal successors, (497), 365 states have internal predecessors, (497), 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) [2021-12-06 22:32:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 497 transitions. [2021-12-06 22:32:01,447 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 497 transitions. Word has length 58 [2021-12-06 22:32:01,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:01,447 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 497 transitions. [2021-12-06 22:32:01,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.4318181818181817) internal successors, (151), 44 states have internal predecessors, (151), 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) [2021-12-06 22:32:01,447 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 497 transitions. [2021-12-06 22:32:01,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 22:32:01,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:01,448 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:01,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 22:32:01,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 22:32:01,650 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:32:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:01,651 INFO L85 PathProgramCache]: Analyzing trace with hash 256918543, now seen corresponding path program 6 times [2021-12-06 22:32:01,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:32:01,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627637726] [2021-12-06 22:32:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:01,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:32:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 15 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:02,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:32:02,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627637726] [2021-12-06 22:32:02,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627637726] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:32:02,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380768520] [2021-12-06 22:32:02,213 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 22:32:02,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:02,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:32:02,214 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:32:02,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 22:32:02,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-06 22:32:02,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:32:02,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-06 22:32:02,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:02,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:32:02,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:02,704 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 [2021-12-06 22:32:02,707 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 [2021-12-06 22:32:02,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:32:02,719 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:32:02,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:32:02,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:02,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:02,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-06 22:32:02,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:32:02,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:32:02,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,826 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:32:02,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:32:02,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:02,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:02,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2021-12-06 22:32:02,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,959 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:32:02,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:32:02,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,968 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:32:02,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:32:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:02,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:32:03,998 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:32:03,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:32:04,008 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:32:04,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:32:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:04,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:04,317 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:04,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:32:04,321 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:04,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:32:04,358 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_109| Int) (v_arrayElimArr_132 (Array Int Int)) (v_arrayElimArr_131 (Array Int Int)) (v_ArrVal_2518 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_109| v_arrayElimArr_132)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_109| v_arrayElimArr_131))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_109| v_ArrVal_2518) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_132 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_131 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_109|) 0)) (not (= 0 (select .cse0 (+ .cse1 4)))) (not (= 2 (select .cse0 (+ 8 .cse1))))))))) is different from false [2021-12-06 22:32:04,542 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:04,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:32:04,547 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:04,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:32:04,636 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_109| Int) (v_arrayElimArr_132 (Array Int Int)) (v_arrayElimArr_131 (Array Int Int)) (v_arrayElimArr_134 (Array Int Int)) (v_arrayElimArr_133 (Array Int Int)) (v_ArrVal_2507 (Array Int Int)) (v_ArrVal_2518 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_131 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_133) |v_ULTIMATE.start_main_~l~0#1.base_109| v_arrayElimArr_132)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_134) |v_ULTIMATE.start_main_~l~0#1.base_109| v_arrayElimArr_131))) (let ((.cse4 (select (select .cse6 .cse0) 0)) (.cse5 (select (select .cse3 .cse0) 0))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_2507) |v_ULTIMATE.start_main_~l~0#1.base_109| v_ArrVal_2518) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_134 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_133 0))) (not (= (select .cse1 (+ .cse2 4)) 0)) (not (= (select .cse1 (+ .cse2 8)) 2)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_109|) 0)) (not (= (select v_arrayElimArr_132 0) 0)))))))) is different from false [2021-12-06 22:32:05,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:05,033 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 289 [2021-12-06 22:32:05,038 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:05,039 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 217 [2021-12-06 22:32:05,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:05,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:05,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:05,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:05,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 107 [2021-12-06 22:32:05,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:05,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 687 treesize of output 649 [2021-12-06 22:32:05,058 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 682 treesize of output 572 [2021-12-06 22:32:05,063 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 566 treesize of output 466 [2021-12-06 22:32:05,700 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:32:05,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 1 [2021-12-06 22:32:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:32:05,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380768520] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:32:05,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:32:05,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 38 [2021-12-06 22:32:05,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268589745] [2021-12-06 22:32:05,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:32:05,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 22:32:05,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:32:05,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 22:32:05,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1148, Unknown=9, NotChecked=138, Total=1406 [2021-12-06 22:32:05,705 INFO L87 Difference]: Start difference. First operand 366 states and 497 transitions. Second operand has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 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) [2021-12-06 22:32:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:08,743 INFO L93 Difference]: Finished difference Result 551 states and 714 transitions. [2021-12-06 22:32:08,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-12-06 22:32:08,743 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 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 58 [2021-12-06 22:32:08,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:08,745 INFO L225 Difference]: With dead ends: 551 [2021-12-06 22:32:08,745 INFO L226 Difference]: Without dead ends: 549 [2021-12-06 22:32:08,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 110 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=666, Invalid=3365, Unknown=9, NotChecked=250, Total=4290 [2021-12-06 22:32:08,746 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 228 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:08,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 849 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 451 Invalid, 0 Unknown, 251 Unchecked, 0.5s Time] [2021-12-06 22:32:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-12-06 22:32:08,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 358. [2021-12-06 22:32:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.361344537815126) internal successors, (486), 357 states have internal predecessors, (486), 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) [2021-12-06 22:32:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 486 transitions. [2021-12-06 22:32:08,804 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 486 transitions. Word has length 58 [2021-12-06 22:32:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:08,804 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 486 transitions. [2021-12-06 22:32:08,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.052631578947368) internal successors, (154), 38 states have internal predecessors, (154), 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) [2021-12-06 22:32:08,804 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 486 transitions. [2021-12-06 22:32:08,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 22:32:08,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:08,805 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:08,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-06 22:32:09,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:09,007 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:32:09,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:09,008 INFO L85 PathProgramCache]: Analyzing trace with hash -560729907, now seen corresponding path program 7 times [2021-12-06 22:32:09,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:32:09,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884816572] [2021-12-06 22:32:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:09,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:32:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:09,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:32:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884816572] [2021-12-06 22:32:09,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884816572] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:32:09,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357239107] [2021-12-06 22:32:09,301 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 22:32:09,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:09,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:32:09,302 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:32:09,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 22:32:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:09,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 22:32:09,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:09,445 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-12-06 22:32:09,445 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 2 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:32:09,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:09,478 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 [2021-12-06 22:32:09,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 32 [2021-12-06 22:32:09,491 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:32:09,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:32:09,493 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 [2021-12-06 22:32:09,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:09,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 75 treesize of output 65 [2021-12-06 22:32:09,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:09,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2021-12-06 22:32:09,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 60 treesize of output 56 [2021-12-06 22:32:09,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,586 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:32:09,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:32:09,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:09,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,710 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:32:09,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 90 [2021-12-06 22:32:09,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:09,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2021-12-06 22:32:09,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 82 [2021-12-06 22:32:09,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:09,730 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:32:09,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:32:10,644 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:32:10,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 203 treesize of output 105 [2021-12-06 22:32:10,653 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:32:10,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 43 [2021-12-06 22:32:10,700 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:32:10,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:10,820 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:10,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:32:10,824 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:10,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:32:10,867 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_143 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_116| Int) (v_arrayElimArr_142 (Array Int Int)) (v_ArrVal_2697 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_116| v_arrayElimArr_143)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_116| v_arrayElimArr_142))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_116| v_ArrVal_2697) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_142 0))) (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select v_arrayElimArr_143 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_116|) 0))))))) is different from false [2021-12-06 22:32:11,042 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:11,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:32:11,046 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:11,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:32:11,146 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_143 (Array Int Int)) (v_arrayElimArr_142 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_116| Int) (v_ArrVal_2686 (Array Int Int)) (v_ArrVal_2697 (Array Int Int)) (v_arrayElimArr_145 (Array Int Int)) (v_arrayElimArr_144 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_142 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_144) |v_ULTIMATE.start_main_~l~0#1.base_116| v_arrayElimArr_143)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_145) |v_ULTIMATE.start_main_~l~0#1.base_116| v_arrayElimArr_142))) (let ((.cse4 (select (select .cse6 .cse2) 0)) (.cse5 (select (select .cse3 .cse2) 0))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_2686) |v_ULTIMATE.start_main_~l~0#1.base_116| v_ArrVal_2697) (select (select .cse6 .cse4) .cse5))) (.cse1 (select (select .cse3 .cse4) .cse5))) (or (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select |c_#valid| .cse2) 0)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_116|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_145 0))) (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= (select v_arrayElimArr_144 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select v_arrayElimArr_143 0) 0)))))))) is different from false [2021-12-06 22:32:11,575 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:11,575 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 289 [2021-12-06 22:32:11,581 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:11,581 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 217 [2021-12-06 22:32:11,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:11,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:11,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:11,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:11,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 107 [2021-12-06 22:32:11,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:11,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 305 [2021-12-06 22:32:11,598 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 338 treesize of output 284 [2021-12-06 22:32:11,601 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 234 [2021-12-06 22:32:11,981 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 18 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2021-12-06 22:32:11,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357239107] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:32:11,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:32:11,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 26 [2021-12-06 22:32:11,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853132864] [2021-12-06 22:32:11,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:32:11,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 22:32:11,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:32:11,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 22:32:11,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=491, Unknown=3, NotChecked=90, Total=650 [2021-12-06 22:32:11,982 INFO L87 Difference]: Start difference. First operand 358 states and 486 transitions. Second operand has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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) [2021-12-06 22:32:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:14,242 INFO L93 Difference]: Finished difference Result 474 states and 616 transitions. [2021-12-06 22:32:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-12-06 22:32:14,242 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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 58 [2021-12-06 22:32:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:14,244 INFO L225 Difference]: With dead ends: 474 [2021-12-06 22:32:14,244 INFO L226 Difference]: Without dead ends: 472 [2021-12-06 22:32:14,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=515, Invalid=2682, Unknown=3, NotChecked=222, Total=3422 [2021-12-06 22:32:14,245 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 114 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:14,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 691 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 409 Invalid, 0 Unknown, 398 Unchecked, 0.4s Time] [2021-12-06 22:32:14,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-06 22:32:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 308. [2021-12-06 22:32:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.3811074918566775) internal successors, (424), 307 states have internal predecessors, (424), 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) [2021-12-06 22:32:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 424 transitions. [2021-12-06 22:32:14,298 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 424 transitions. Word has length 58 [2021-12-06 22:32:14,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:14,298 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 424 transitions. [2021-12-06 22:32:14,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.615384615384615) internal successors, (120), 26 states have internal predecessors, (120), 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) [2021-12-06 22:32:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 424 transitions. [2021-12-06 22:32:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 22:32:14,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:14,299 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:14,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 22:32:14,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 22:32:14,501 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:32:14,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash -137666229, now seen corresponding path program 2 times [2021-12-06 22:32:14,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:32:14,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139313631] [2021-12-06 22:32:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:14,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:32:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:32:15,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:32:15,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139313631] [2021-12-06 22:32:15,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139313631] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:32:15,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849368130] [2021-12-06 22:32:15,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:32:15,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:15,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:32:15,027 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:32:15,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 22:32:15,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:32:15,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:32:15,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 22:32:15,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:15,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:15,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:32:15,241 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 [2021-12-06 22:32:15,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:32:15,251 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:32:15,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:32:15,259 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 [2021-12-06 22:32:15,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:15,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:15,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:32:15,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:32:15,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,367 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:32:15,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:32:15,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:32:15,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:15,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:15,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,522 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:32:15,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:32:15,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:32:15,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:32:15,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:15,541 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:32:15,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:32:16,564 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:32:16,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:32:16,574 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:32:16,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:32:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:32:16,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:16,930 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:32:16,933 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:16,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:32:16,970 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2867 (Array Int Int)) (v_arrayElimArr_153 (Array Int Int)) (v_arrayElimArr_152 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_123| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_123| v_arrayElimArr_153)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_123| v_arrayElimArr_152))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_123| v_ArrVal_2867) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_152 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_123|) 0)) (not (= (select v_arrayElimArr_153 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select .cse0 (+ .cse1 8)) 3))))))) is different from false [2021-12-06 22:32:17,168 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:17,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:32:17,172 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:17,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:32:17,273 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2867 (Array Int Int)) (v_arrayElimArr_154 (Array Int Int)) (v_arrayElimArr_153 (Array Int Int)) (v_ArrVal_2864 (Array Int Int)) (v_arrayElimArr_152 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_123| Int) (v_arrayElimArr_155 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_152 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_154) |v_ULTIMATE.start_main_~l~0#1.base_123| v_arrayElimArr_153)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_155) |v_ULTIMATE.start_main_~l~0#1.base_123| v_arrayElimArr_152))) (let ((.cse4 (select (select .cse6 .cse0) 0)) (.cse5 (select (select .cse3 .cse0) 0))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_2864) |v_ULTIMATE.start_main_~l~0#1.base_123| v_ArrVal_2867) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_155 0))) (not (= (select v_arrayElimArr_153 0) 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= (select .cse1 (+ .cse2 4)) 1)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_123|) 0)) (not (= (select .cse1 (+ .cse2 8)) 3)) (not (= (select v_arrayElimArr_154 0) |c_ULTIMATE.start_main_~l~0#1.offset|)))))))) is different from false [2021-12-06 22:32:17,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:17,747 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 375 treesize of output 303 [2021-12-06 22:32:17,753 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:17,754 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 291 treesize of output 219 [2021-12-06 22:32:17,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:17,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:17,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:17,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:17,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 107 [2021-12-06 22:32:17,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:17,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 689 treesize of output 649 [2021-12-06 22:32:17,790 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 682 treesize of output 572 [2021-12-06 22:32:17,795 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 566 treesize of output 466 [2021-12-06 22:32:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 29 not checked. [2021-12-06 22:32:18,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849368130] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:32:18,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:32:18,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 37 [2021-12-06 22:32:18,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802732277] [2021-12-06 22:32:18,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:32:18,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 22:32:18,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:32:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 22:32:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1101, Unknown=3, NotChecked=134, Total=1332 [2021-12-06 22:32:18,490 INFO L87 Difference]: Start difference. First operand 308 states and 424 transitions. Second operand has 37 states, 37 states have (on average 4.108108108108108) internal successors, (152), 37 states have internal predecessors, (152), 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) [2021-12-06 22:32:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:24,475 INFO L93 Difference]: Finished difference Result 559 states and 714 transitions. [2021-12-06 22:32:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-12-06 22:32:24,475 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.108108108108108) internal successors, (152), 37 states have internal predecessors, (152), 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 60 [2021-12-06 22:32:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:24,477 INFO L225 Difference]: With dead ends: 559 [2021-12-06 22:32:24,477 INFO L226 Difference]: Without dead ends: 544 [2021-12-06 22:32:24,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 107 SyntacticMatches, 8 SemanticMatches, 80 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1076, Invalid=5249, Unknown=3, NotChecked=314, Total=6642 [2021-12-06 22:32:24,478 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 388 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:24,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1184 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 626 Invalid, 0 Unknown, 277 Unchecked, 0.7s Time] [2021-12-06 22:32:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-12-06 22:32:24,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 308. [2021-12-06 22:32:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.3811074918566775) internal successors, (424), 307 states have internal predecessors, (424), 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) [2021-12-06 22:32:24,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 424 transitions. [2021-12-06 22:32:24,549 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 424 transitions. Word has length 60 [2021-12-06 22:32:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:24,550 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 424 transitions. [2021-12-06 22:32:24,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.108108108108108) internal successors, (152), 37 states have internal predecessors, (152), 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) [2021-12-06 22:32:24,550 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 424 transitions. [2021-12-06 22:32:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 22:32:24,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:24,550 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:24,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-06 22:32:24,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 22:32:24,751 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:32:24,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:24,751 INFO L85 PathProgramCache]: Analyzing trace with hash -331445233, now seen corresponding path program 3 times [2021-12-06 22:32:24,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:32:24,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694549125] [2021-12-06 22:32:24,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:24,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:32:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:32:25,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:32:25,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694549125] [2021-12-06 22:32:25,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694549125] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:32:25,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180724403] [2021-12-06 22:32:25,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:32:25,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:32:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:32:25,153 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:32:25,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 22:32:25,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 22:32:25,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:32:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 119 conjunts are in the unsatisfiable core [2021-12-06 22:32:25,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:32:25,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:32:25,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:32:25,859 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 [2021-12-06 22:32:25,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:32:25,869 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:32:25,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:32:25,876 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 [2021-12-06 22:32:25,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:25,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:25,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:32:25,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:32:25,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:32:25,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:25,977 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:32:25,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:32:26,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-12-06 22:32:26,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:26,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:32:26,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,176 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:32:26,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:32:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,185 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:32:26,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:32:26,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:26,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:32:27,910 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:32:27,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 207 treesize of output 113 [2021-12-06 22:32:27,920 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:32:27,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 34 [2021-12-06 22:32:28,114 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:32:28,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:32:28,760 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:28,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 169 treesize of output 157 [2021-12-06 22:32:28,765 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:28,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 139 [2021-12-06 22:32:29,748 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:29,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 253 [2021-12-06 22:32:29,755 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:29,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 247 treesize of output 235 [2021-12-06 22:32:30,990 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:30,990 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 393 treesize of output 331 [2021-12-06 22:32:30,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:32:30,999 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 321 treesize of output 259 [2021-12-06 22:32:31,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:31,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:31,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:31,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:32:31,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 149 [2021-12-06 22:32:31,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:32:31,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1023 treesize of output 985 [2021-12-06 22:32:31,025 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 1088 treesize of output 940 [2021-12-06 22:32:31,033 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 934 treesize of output 794 [2021-12-06 22:32:31,603 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3040 Int) (v_ArrVal_3035 (Array Int Int)) (v_ArrVal_3025 (Array Int Int)) (|ULTIMATE.start_main_~ev2~0#1| Int) (v_arrayElimCell_533 Int) (v_arrayElimCell_532 Int) (|v_ULTIMATE.start_main_~l~0#1.base_130| Int) (v_ArrVal_3041 Int)) (let ((.cse4 (store (store |c_#memory_int| v_arrayElimCell_532 v_ArrVal_3025) v_arrayElimCell_533 v_ArrVal_3035))) (let ((.cse2 (store (store (store (select .cse4 |v_ULTIMATE.start_main_~l~0#1.base_130|) 4 v_ArrVal_3041) 8 |ULTIMATE.start_main_~ev2~0#1|) 0 v_ArrVal_3040))) (let ((.cse3 (store .cse4 |v_ULTIMATE.start_main_~l~0#1.base_130| .cse2))) (let ((.cse1 (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse0 (store |c_#valid| v_arrayElimCell_532 1))) (or (not (= (select (store .cse0 v_arrayElimCell_533 1) |v_ULTIMATE.start_main_~l~0#1.base_130|) 0)) (not (= (select .cse1 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) 3)) (not (= (select .cse1 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 1)) (not (= (select |c_#valid| v_arrayElimCell_532) 0)) (< 3 |ULTIMATE.start_main_~ev2~0#1|) (= 3 (select .cse2 8)) (not (= (select (select .cse3 v_arrayElimCell_533) 4) 0)) (not (= (select .cse0 v_arrayElimCell_533) 0)))))))) is different from false [2021-12-06 22:32:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 23 not checked. [2021-12-06 22:32:33,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180724403] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:32:33,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:32:33,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 49 [2021-12-06 22:32:33,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787152166] [2021-12-06 22:32:33,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:32:33,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 22:32:33,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:32:33,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 22:32:33,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2082, Unknown=3, NotChecked=92, Total=2352 [2021-12-06 22:32:33,610 INFO L87 Difference]: Start difference. First operand 308 states and 424 transitions. Second operand has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 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) [2021-12-06 22:33:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:23,131 INFO L93 Difference]: Finished difference Result 1848 states and 2283 transitions. [2021-12-06 22:33:23,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 399 states. [2021-12-06 22:33:23,132 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 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 60 [2021-12-06 22:33:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:23,138 INFO L225 Difference]: With dead ends: 1848 [2021-12-06 22:33:23,138 INFO L226 Difference]: Without dead ends: 1833 [2021-12-06 22:33:23,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 105 SyntacticMatches, 12 SemanticMatches, 433 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 81396 ImplicationChecksByTransitivity, 49.0s TimeCoverageRelationStatistics Valid=19952, Invalid=167971, Unknown=3, NotChecked=864, Total=188790 [2021-12-06 22:33:23,146 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 1180 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 1869 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 2105 SdHoareTripleChecker+Invalid, 3817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1593 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:23,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 2105 Invalid, 3817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1869 Invalid, 0 Unknown, 1593 Unchecked, 1.8s Time] [2021-12-06 22:33:23,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1833 states. [2021-12-06 22:33:23,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1833 to 501. [2021-12-06 22:33:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.398) internal successors, (699), 500 states have internal predecessors, (699), 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) [2021-12-06 22:33:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 699 transitions. [2021-12-06 22:33:23,251 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 699 transitions. Word has length 60 [2021-12-06 22:33:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:33:23,251 INFO L470 AbstractCegarLoop]: Abstraction has 501 states and 699 transitions. [2021-12-06 22:33:23,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.1020408163265305) internal successors, (152), 49 states have internal predecessors, (152), 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) [2021-12-06 22:33:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 699 transitions. [2021-12-06 22:33:23,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 22:33:23,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:33:23,252 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:33:23,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-06 22:33:23,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 22:33:23,454 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:33:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:33:23,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2131810935, now seen corresponding path program 1 times [2021-12-06 22:33:23,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:33:23,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980281996] [2021-12-06 22:33:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:23,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:33:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:23,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:33:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980281996] [2021-12-06 22:33:23,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980281996] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:33:23,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801366939] [2021-12-06 22:33:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:23,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:23,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:33:23,953 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:33:23,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 22:33:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:24,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 22:33:24,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:33:24,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:33:24,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:33:24,173 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 [2021-12-06 22:33:24,182 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:33:24,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:33:24,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:33:24,192 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 [2021-12-06 22:33:24,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:24,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:24,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:33:24,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:33:24,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:33:24,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,308 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:33:24,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:33:24,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:24,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:24,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-06 22:33:24,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,463 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:33:24,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:33:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:24,473 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:33:24,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:33:24,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:33:25,603 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:33:25,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:33:25,613 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:33:25,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:33:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:25,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:33:25,998 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:25,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:33:26,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:26,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:33:26,041 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_172 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_137| Int) (v_ArrVal_3222 (Array Int Int)) (v_arrayElimArr_173 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_137| v_arrayElimArr_173)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_137| v_arrayElimArr_172))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_137| v_ArrVal_3222) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select .cse0 (+ .cse1 8)) 3)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_173 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_172 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_137|) 0)) (not (= (select .cse0 (+ .cse1 4)) 1))))))) is different from false [2021-12-06 22:33:26,234 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:26,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:33:26,238 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:26,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:33:26,338 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_172 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_137| Int) (v_ArrVal_3210 (Array Int Int)) (v_arrayElimArr_175 (Array Int Int)) (v_ArrVal_3222 (Array Int Int)) (v_arrayElimArr_174 (Array Int Int)) (v_arrayElimArr_173 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_172 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_174) |v_ULTIMATE.start_main_~l~0#1.base_137| v_arrayElimArr_173)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_175) |v_ULTIMATE.start_main_~l~0#1.base_137| v_arrayElimArr_172))) (let ((.cse4 (select (select .cse6 .cse2) 0)) (.cse5 (select (select .cse3 .cse2) 0))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_3210) |v_ULTIMATE.start_main_~l~0#1.base_137| v_ArrVal_3222) (select (select .cse6 .cse4) .cse5))) (.cse1 (select (select .cse3 .cse4) .cse5))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_175 0))) (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= (select v_arrayElimArr_174 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| .cse2) 0)) (not (= (select v_arrayElimArr_173 0) 0)) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_137|) 0)))))))) is different from false [2021-12-06 22:33:26,797 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:26,797 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 375 treesize of output 303 [2021-12-06 22:33:26,803 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:26,803 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 291 treesize of output 219 [2021-12-06 22:33:26,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:26,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:26,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:26,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:26,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 107 [2021-12-06 22:33:26,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:26,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 689 treesize of output 649 [2021-12-06 22:33:26,821 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 682 treesize of output 572 [2021-12-06 22:33:26,825 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 566 treesize of output 466 [2021-12-06 22:33:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 29 not checked. [2021-12-06 22:33:27,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801366939] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:33:27,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:33:27,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 13, 13] total 38 [2021-12-06 22:33:27,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918474144] [2021-12-06 22:33:27,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:33:27,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 22:33:27,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:33:27,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 22:33:27,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1168, Unknown=2, NotChecked=138, Total=1406 [2021-12-06 22:33:27,476 INFO L87 Difference]: Start difference. First operand 501 states and 699 transitions. Second operand has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 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) [2021-12-06 22:33:32,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:32,525 INFO L93 Difference]: Finished difference Result 842 states and 1099 transitions. [2021-12-06 22:33:32,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-06 22:33:32,525 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 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 60 [2021-12-06 22:33:32,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:32,528 INFO L225 Difference]: With dead ends: 842 [2021-12-06 22:33:32,528 INFO L226 Difference]: Without dead ends: 796 [2021-12-06 22:33:32,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 109 SyntacticMatches, 8 SemanticMatches, 72 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 987 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=871, Invalid=4247, Unknown=2, NotChecked=282, Total=5402 [2021-12-06 22:33:32,529 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 457 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:32,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1114 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 470 Invalid, 0 Unknown, 295 Unchecked, 0.5s Time] [2021-12-06 22:33:32,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-12-06 22:33:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 493. [2021-12-06 22:33:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 492 states have (on average 1.4004065040650406) internal successors, (689), 492 states have internal predecessors, (689), 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) [2021-12-06 22:33:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 689 transitions. [2021-12-06 22:33:32,637 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 689 transitions. Word has length 60 [2021-12-06 22:33:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:33:32,637 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 689 transitions. [2021-12-06 22:33:32,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.0) internal successors, (152), 38 states have internal predecessors, (152), 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) [2021-12-06 22:33:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 689 transitions. [2021-12-06 22:33:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 22:33:32,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:33:32,638 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:33:32,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 22:33:32,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 22:33:32,840 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:33:32,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:33:32,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1969377357, now seen corresponding path program 4 times [2021-12-06 22:33:32,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:33:32,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893122386] [2021-12-06 22:33:32,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:32,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:33:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 21 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:33,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:33:33,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893122386] [2021-12-06 22:33:33,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893122386] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:33:33,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808471862] [2021-12-06 22:33:33,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:33:33,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:33:33,593 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:33:33,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 22:33:33,740 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:33:33,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:33:33,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-06 22:33:33,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:33:33,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:33:33,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:33:33,841 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 [2021-12-06 22:33:33,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:33:33,852 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:33:33,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:33:33,860 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 [2021-12-06 22:33:33,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:33,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:33,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2021-12-06 22:33:33,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:33:33,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:33:33,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:33,975 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:33:33,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:33:34,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:34,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:34,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:34,131 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:33:34,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:33:34,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:34,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:34,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:34,141 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:33:34,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:33:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:34,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:33:34,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:33:35,170 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:33:35,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:33:35,180 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:33:35,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:33:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:35,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:33:35,571 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:35,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:33:35,574 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:35,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:33:35,609 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_183 (Array Int Int)) (v_arrayElimArr_182 (Array Int Int)) (v_ArrVal_3395 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_144| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_144| v_arrayElimArr_183)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_144| v_arrayElimArr_182))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_144| v_ArrVal_3395) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_182 0))) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_144|) 0)) (not (= (select v_arrayElimArr_183 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= 3 (select .cse0 (+ .cse1 8))))))))) is different from false [2021-12-06 22:33:35,771 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:35,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 233 treesize of output 221 [2021-12-06 22:33:35,776 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:35,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 203 [2021-12-06 22:33:35,893 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_183 (Array Int Int)) (v_arrayElimArr_182 (Array Int Int)) (v_ArrVal_3395 (Array Int Int)) (v_arrayElimArr_185 (Array Int Int)) (v_arrayElimArr_184 (Array Int Int)) (v_ArrVal_3389 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_144| Int)) (let ((.cse2 (select v_arrayElimArr_182 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_184) |v_ULTIMATE.start_main_~l~0#1.base_144| v_arrayElimArr_183)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_185) |v_ULTIMATE.start_main_~l~0#1.base_144| v_arrayElimArr_182))) (let ((.cse4 (select (select .cse6 .cse2) 0)) (.cse5 (select (select .cse3 .cse2) 0))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_3389) |v_ULTIMATE.start_main_~l~0#1.base_144| v_ArrVal_3395) (select (select .cse6 .cse4) .cse5))) (.cse1 (select (select .cse3 .cse4) .cse5))) (or (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_144|) 0)) (not (= (select v_arrayElimArr_184 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select v_arrayElimArr_183 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_185 0))) (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= 0 (select |c_#valid| .cse2))))))))) is different from false [2021-12-06 22:33:36,304 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:36,304 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 351 treesize of output 289 [2021-12-06 22:33:36,310 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:36,310 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 279 treesize of output 217 [2021-12-06 22:33:36,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:36,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:36,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:36,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:36,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 107 [2021-12-06 22:33:36,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:36,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 305 [2021-12-06 22:33:36,326 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 338 treesize of output 284 [2021-12-06 22:33:36,331 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 234 [2021-12-06 22:33:36,855 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:33:36,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 1 [2021-12-06 22:33:36,859 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 25 proven. 41 refuted. 0 times theorem prover too weak. 4 trivial. 29 not checked. [2021-12-06 22:33:36,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808471862] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:33:36,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:33:36,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 13, 13] total 41 [2021-12-06 22:33:36,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877800653] [2021-12-06 22:33:36,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:33:36,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 22:33:36,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:33:36,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 22:33:36,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1379, Unknown=3, NotChecked=150, Total=1640 [2021-12-06 22:33:36,860 INFO L87 Difference]: Start difference. First operand 493 states and 689 transitions. Second operand has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 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) [2021-12-06 22:33:46,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:46,098 INFO L93 Difference]: Finished difference Result 854 states and 1109 transitions. [2021-12-06 22:33:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-12-06 22:33:46,099 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 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 60 [2021-12-06 22:33:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:46,102 INFO L225 Difference]: With dead ends: 854 [2021-12-06 22:33:46,102 INFO L226 Difference]: Without dead ends: 808 [2021-12-06 22:33:46,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 110 SyntacticMatches, 6 SemanticMatches, 97 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1438, Invalid=7879, Unknown=3, NotChecked=382, Total=9702 [2021-12-06 22:33:46,103 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 434 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 416 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:46,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1072 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 660 Invalid, 0 Unknown, 416 Unchecked, 0.7s Time] [2021-12-06 22:33:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2021-12-06 22:33:46,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 426. [2021-12-06 22:33:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 1.4070588235294117) internal successors, (598), 425 states have internal predecessors, (598), 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) [2021-12-06 22:33:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 598 transitions. [2021-12-06 22:33:46,192 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 598 transitions. Word has length 60 [2021-12-06 22:33:46,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:33:46,192 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 598 transitions. [2021-12-06 22:33:46,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.707317073170732) internal successors, (152), 41 states have internal predecessors, (152), 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) [2021-12-06 22:33:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 598 transitions. [2021-12-06 22:33:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 22:33:46,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:33:46,193 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:33:46,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 22:33:46,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:46,395 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:33:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:33:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash -683824177, now seen corresponding path program 1 times [2021-12-06 22:33:46,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:33:46,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268003074] [2021-12-06 22:33:46,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:46,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:33:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:46,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:33:46,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268003074] [2021-12-06 22:33:46,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268003074] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:33:46,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644606462] [2021-12-06 22:33:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:46,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:46,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:33:46,909 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:33:46,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 22:33:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:47,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 104 conjunts are in the unsatisfiable core [2021-12-06 22:33:47,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:33:47,083 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-12-06 22:33:47,083 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 2 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:33:47,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:33:47,143 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 [2021-12-06 22:33:47,146 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 [2021-12-06 22:33:47,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 44 treesize of output 40 [2021-12-06 22:33:47,155 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:33:47,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:33:47,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:47,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 75 treesize of output 65 [2021-12-06 22:33:47,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:47,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2021-12-06 22:33:47,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 60 treesize of output 56 [2021-12-06 22:33:47,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,251 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:33:47,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:33:47,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:47,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,385 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:33:47,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 130 treesize of output 90 [2021-12-06 22:33:47,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 64 [2021-12-06 22:33:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 85 [2021-12-06 22:33:47,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-06 22:33:47,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:47,410 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:33:47,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:33:48,427 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:33:48,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 203 treesize of output 105 [2021-12-06 22:33:48,436 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:33:48,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 43 [2021-12-06 22:33:48,494 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:48,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:33:48,664 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:48,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:33:48,667 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:48,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:33:48,721 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_193 (Array Int Int)) (v_arrayElimArr_192 (Array Int Int)) (v_ArrVal_3572 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_151| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_151| v_arrayElimArr_193)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_151| v_arrayElimArr_192))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_151| v_ArrVal_3572) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_192 0))) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_193 0))) (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_151|) 0))))))) is different from false [2021-12-06 22:33:48,898 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:48,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 237 [2021-12-06 22:33:48,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:48,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 219 [2021-12-06 22:33:49,015 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_194 (Array Int Int)) (v_arrayElimArr_193 (Array Int Int)) (v_arrayElimArr_192 (Array Int Int)) (v_ArrVal_3561 (Array Int Int)) (v_ArrVal_3572 (Array Int Int)) (v_arrayElimArr_195 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_151| Int)) (let ((.cse0 (select v_arrayElimArr_192 0))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_195) |v_ULTIMATE.start_main_~l~0#1.base_151| v_arrayElimArr_193)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_194) |v_ULTIMATE.start_main_~l~0#1.base_151| v_arrayElimArr_192)) (.cse1 (select v_arrayElimArr_193 0))) (let ((.cse5 (select (select .cse7 .cse0) .cse1)) (.cse6 (select (select .cse4 .cse0) .cse1))) (let ((.cse2 (select (store (store |c_#memory_int| .cse0 v_ArrVal_3561) |v_ULTIMATE.start_main_~l~0#1.base_151| v_ArrVal_3572) (select (select .cse7 .cse5) .cse6))) (.cse3 (select (select .cse4 .cse5) .cse6))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_195 0))) (not (= 0 (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_151|))) (not (= .cse1 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_194 0))) (not (= 2 (select .cse2 (+ 8 .cse3)))) (not (= (select |c_#valid| .cse0) 0)) (not (= (select .cse2 (+ 4 .cse3)) 0)))))))) is different from false [2021-12-06 22:33:49,522 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:49,523 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 305 [2021-12-06 22:33:49,529 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:49,530 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 233 [2021-12-06 22:33:49,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:49,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:49,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:49,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:49,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:49,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 115 [2021-12-06 22:33:49,542 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2021-12-06 22:33:49,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 104 [2021-12-06 22:33:49,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:49,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:49,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:49,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:49,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 43 [2021-12-06 22:33:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 29 not checked. [2021-12-06 22:33:50,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644606462] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:33:50,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:33:50,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13, 13] total 32 [2021-12-06 22:33:50,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809813096] [2021-12-06 22:33:50,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:33:50,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 22:33:50,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:33:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 22:33:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=782, Unknown=6, NotChecked=114, Total=992 [2021-12-06 22:33:50,040 INFO L87 Difference]: Start difference. First operand 426 states and 598 transitions. Second operand has 32 states, 32 states have (on average 4.28125) internal successors, (137), 32 states have internal predecessors, (137), 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) [2021-12-06 22:33:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:52,177 INFO L93 Difference]: Finished difference Result 502 states and 681 transitions. [2021-12-06 22:33:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 22:33:52,178 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.28125) internal successors, (137), 32 states have internal predecessors, (137), 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 62 [2021-12-06 22:33:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:52,180 INFO L225 Difference]: With dead ends: 502 [2021-12-06 22:33:52,180 INFO L226 Difference]: Without dead ends: 500 [2021-12-06 22:33:52,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=430, Invalid=2434, Unknown=6, NotChecked=210, Total=3080 [2021-12-06 22:33:52,181 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 159 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 291 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:52,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 799 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 511 Invalid, 0 Unknown, 291 Unchecked, 0.5s Time] [2021-12-06 22:33:52,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-12-06 22:33:52,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 381. [2021-12-06 22:33:52,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 1.4289473684210525) internal successors, (543), 380 states have internal predecessors, (543), 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) [2021-12-06 22:33:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 543 transitions. [2021-12-06 22:33:52,278 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 543 transitions. Word has length 62 [2021-12-06 22:33:52,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:33:52,278 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 543 transitions. [2021-12-06 22:33:52,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.28125) internal successors, (137), 32 states have internal predecessors, (137), 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) [2021-12-06 22:33:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 543 transitions. [2021-12-06 22:33:52,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 22:33:52,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:33:52,279 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:33:52,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 22:33:52,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:52,481 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:33:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:33:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1671614061, now seen corresponding path program 2 times [2021-12-06 22:33:52,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:33:52,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336025125] [2021-12-06 22:33:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:52,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:33:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:53,034 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 18 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:53,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:33:53,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336025125] [2021-12-06 22:33:53,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336025125] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:33:53,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474470608] [2021-12-06 22:33:53,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:33:53,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:53,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:33:53,035 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:33:53,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 22:33:53,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:33:53,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:33:53,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-06 22:33:53,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:33:53,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:33:53,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:33:53,295 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 [2021-12-06 22:33:53,305 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:33:53,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:33:53,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:33:53,315 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 [2021-12-06 22:33:53,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:53,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:53,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:33:53,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,429 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:33:53,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:33:53,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:33:53,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:33:53,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:53,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:33:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,593 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:33:53,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:33:53,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:33:53,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:33:53,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:53,611 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:33:53,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:33:54,761 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:33:54,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:33:54,771 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:33:54,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:33:54,849 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 79 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:33:54,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:33:55,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:55,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:33:55,118 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:55,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:33:55,158 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_158| Int) (v_arrayElimArr_202 (Array Int Int)) (v_ArrVal_3743 (Array Int Int)) (v_arrayElimArr_203 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_158| v_arrayElimArr_203)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_158| v_arrayElimArr_202))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_158| v_ArrVal_3743) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_158|) 0)) (not (= (select v_arrayElimArr_203 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_202 0))) (not (= (select .cse0 (+ 8 .cse1)) 2))))))) is different from false [2021-12-06 22:33:55,336 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:55,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 237 [2021-12-06 22:33:55,340 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:55,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 219 [2021-12-06 22:33:55,442 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_158| Int) (v_arrayElimArr_202 (Array Int Int)) (v_ArrVal_3731 (Array Int Int)) (v_ArrVal_3743 (Array Int Int)) (v_arrayElimArr_205 (Array Int Int)) (v_arrayElimArr_204 (Array Int Int)) (v_arrayElimArr_203 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_202 0))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse1 v_arrayElimArr_205) |v_ULTIMATE.start_main_~l~0#1.base_158| v_arrayElimArr_203)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse1 v_arrayElimArr_204) |v_ULTIMATE.start_main_~l~0#1.base_158| v_arrayElimArr_202)) (.cse0 (select v_arrayElimArr_203 0))) (let ((.cse5 (select (select .cse7 .cse1) .cse0)) (.cse6 (select (select .cse4 .cse1) .cse0))) (let ((.cse2 (select (store (store |c_#memory_int| .cse1 v_ArrVal_3731) |v_ULTIMATE.start_main_~l~0#1.base_158| v_ArrVal_3743) (select (select .cse7 .cse5) .cse6))) (.cse3 (select (select .cse4 .cse5) .cse6))) (or (not (= .cse0 0)) (not (= (select (store |c_#valid| .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_158|) 0)) (not (= (select .cse2 (+ .cse3 8)) 2)) (not (= (select .cse2 (+ .cse3 4)) 0)) (not (= (select |c_#valid| .cse1) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_205 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_204 0))))))))) is different from false [2021-12-06 22:33:55,903 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:55,903 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 391 treesize of output 319 [2021-12-06 22:33:55,909 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:33:55,909 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 235 [2021-12-06 22:33:55,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:55,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:55,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:55,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:55,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:55,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 115 [2021-12-06 22:33:55,919 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2021-12-06 22:33:55,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 104 [2021-12-06 22:33:55,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:55,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:55,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:33:55,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:33:55,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 43 [2021-12-06 22:33:56,340 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:33:56,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 1 [2021-12-06 22:33:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 22 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 29 not checked. [2021-12-06 22:33:56,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474470608] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:33:56,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:33:56,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 37 [2021-12-06 22:33:56,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303697576] [2021-12-06 22:33:56,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:33:56,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-06 22:33:56,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:33:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-06 22:33:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1084, Unknown=5, NotChecked=134, Total=1332 [2021-12-06 22:33:56,345 INFO L87 Difference]: Start difference. First operand 381 states and 543 transitions. Second operand has 37 states, 37 states have (on average 4.108108108108108) internal successors, (152), 37 states have internal predecessors, (152), 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) [2021-12-06 22:34:00,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:34:00,074 INFO L93 Difference]: Finished difference Result 562 states and 753 transitions. [2021-12-06 22:34:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 22:34:00,075 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.108108108108108) internal successors, (152), 37 states have internal predecessors, (152), 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 62 [2021-12-06 22:34:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:34:00,077 INFO L225 Difference]: With dead ends: 562 [2021-12-06 22:34:00,077 INFO L226 Difference]: Without dead ends: 560 [2021-12-06 22:34:00,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 114 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1072 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=780, Invalid=4053, Unknown=5, NotChecked=274, Total=5112 [2021-12-06 22:34:00,078 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 222 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:34:00,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 846 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 664 Invalid, 0 Unknown, 250 Unchecked, 0.7s Time] [2021-12-06 22:34:00,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-12-06 22:34:00,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 177. [2021-12-06 22:34:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.3465909090909092) internal successors, (237), 176 states have internal predecessors, (237), 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) [2021-12-06 22:34:00,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 237 transitions. [2021-12-06 22:34:00,114 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 237 transitions. Word has length 62 [2021-12-06 22:34:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:00,114 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 237 transitions. [2021-12-06 22:34:00,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.108108108108108) internal successors, (152), 37 states have internal predecessors, (152), 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) [2021-12-06 22:34:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 237 transitions. [2021-12-06 22:34:00,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 22:34:00,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:00,115 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:34:00,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 22:34:00,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:34:00,317 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:00,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash -757146041, now seen corresponding path program 1 times [2021-12-06 22:34:00,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:00,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180824199] [2021-12-06 22:34:00,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:00,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:00,665 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 24 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 22:34:00,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:00,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180824199] [2021-12-06 22:34:00,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180824199] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:34:00,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866878922] [2021-12-06 22:34:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:00,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:34:00,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:34:00,666 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:34:00,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 22:34:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:00,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 106 conjunts are in the unsatisfiable core [2021-12-06 22:34:00,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:34:00,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:00,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:00,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:00,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:34:00,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:34:00,911 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 [2021-12-06 22:34:00,915 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 [2021-12-06 22:34:00,925 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:34:00,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:34:00,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:34:01,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:01,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:01,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:34:01,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:34:01,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,105 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:34:01,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:34:01,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:34:01,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:01,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:01,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,306 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:34:01,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:34:01,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,315 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:34:01,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:34:01,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:01,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:34:01,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:34:02,368 INFO L354 Elim1Store]: treesize reduction 77, result has 19.8 percent of original size [2021-12-06 22:34:02,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 190 treesize of output 100 [2021-12-06 22:34:02,377 INFO L354 Elim1Store]: treesize reduction 10, result has 41.2 percent of original size [2021-12-06 22:34:02,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 25 [2021-12-06 22:34:02,448 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 81 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 22:34:02,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:34:02,708 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:02,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 135 [2021-12-06 22:34:02,711 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:02,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 117 [2021-12-06 22:34:02,750 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_213 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_165| Int) (v_arrayElimArr_214 (Array Int Int)) (v_ArrVal_3914 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_165| v_arrayElimArr_214)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_165| v_arrayElimArr_213))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_165| v_ArrVal_3914) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select v_arrayElimArr_214 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select .cse0 (+ 8 .cse1)) 3)) (not (= (select v_arrayElimArr_213 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_165|) 0))))))) is different from false [2021-12-06 22:34:03,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:03,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 237 [2021-12-06 22:34:03,045 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:03,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 219 [2021-12-06 22:34:03,144 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3907 (Array Int Int)) (v_arrayElimArr_213 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_165| Int) (v_arrayElimArr_216 (Array Int Int)) (v_arrayElimArr_215 (Array Int Int)) (v_arrayElimArr_214 (Array Int Int)) (v_ArrVal_3914 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_213 0))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_216) |v_ULTIMATE.start_main_~l~0#1.base_165| v_arrayElimArr_214)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_215) |v_ULTIMATE.start_main_~l~0#1.base_165| v_arrayElimArr_213)) (.cse3 (select v_arrayElimArr_214 0))) (let ((.cse5 (select (select .cse7 .cse0) .cse3)) (.cse6 (select (select .cse4 .cse0) .cse3))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_3907) |v_ULTIMATE.start_main_~l~0#1.base_165| v_ArrVal_3914) (select (select .cse7 .cse5) .cse6))) (.cse2 (select (select .cse4 .cse5) .cse6))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_215 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_216 0))) (not (= (select .cse1 (+ .cse2 4)) 1)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_165|) 0)) (not (= (select .cse1 (+ .cse2 8)) 3)) (not (= .cse3 0)))))))) is different from false [2021-12-06 22:34:04,012 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:04,012 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 367 treesize of output 305 [2021-12-06 22:34:04,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:04,018 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 295 treesize of output 233 [2021-12-06 22:34:04,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:04,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:04,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:04,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:04,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:04,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 115 [2021-12-06 22:34:04,029 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2021-12-06 22:34:04,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 104 [2021-12-06 22:34:04,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:04,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:04,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:04,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:04,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 43 [2021-12-06 22:34:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 7 trivial. 42 not checked. [2021-12-06 22:34:04,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866878922] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:34:04,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:34:04,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 35 [2021-12-06 22:34:04,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825764323] [2021-12-06 22:34:04,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:34:04,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 22:34:04,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:34:04,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 22:34:04,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=970, Unknown=3, NotChecked=126, Total=1190 [2021-12-06 22:34:04,284 INFO L87 Difference]: Start difference. First operand 177 states and 237 transitions. Second operand has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 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) [2021-12-06 22:34:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:34:10,701 INFO L93 Difference]: Finished difference Result 295 states and 380 transitions. [2021-12-06 22:34:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 22:34:10,701 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 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 63 [2021-12-06 22:34:10,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:34:10,703 INFO L225 Difference]: With dead ends: 295 [2021-12-06 22:34:10,703 INFO L226 Difference]: Without dead ends: 249 [2021-12-06 22:34:10,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 113 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 537 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=712, Invalid=2833, Unknown=3, NotChecked=234, Total=3782 [2021-12-06 22:34:10,703 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 318 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:34:10,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [318 Valid, 910 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 318 Invalid, 0 Unknown, 212 Unchecked, 0.4s Time] [2021-12-06 22:34:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-06 22:34:10,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 112. [2021-12-06 22:34:10,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 111 states have internal predecessors, (145), 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) [2021-12-06 22:34:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2021-12-06 22:34:10,736 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 63 [2021-12-06 22:34:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:10,737 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2021-12-06 22:34:10,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 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) [2021-12-06 22:34:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2021-12-06 22:34:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 22:34:10,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:10,737 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:34:10,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 22:34:10,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-06 22:34:10,938 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1492842773, now seen corresponding path program 7 times [2021-12-06 22:34:10,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:10,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744203639] [2021-12-06 22:34:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:10,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:11,197 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:34:11,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:11,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744203639] [2021-12-06 22:34:11,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744203639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:34:11,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843724489] [2021-12-06 22:34:11,197 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 22:34:11,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:34:11,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:34:11,198 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:34:11,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 22:34:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:11,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-06 22:34:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:34:11,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:34:11,386 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 [2021-12-06 22:34:11,388 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 [2021-12-06 22:34:11,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:11,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:11,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:34:11,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:34:11,456 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:34:11,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:34:11,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:11,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:11,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-06 22:34:11,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,545 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:34:11,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 52 [2021-12-06 22:34:11,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,556 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:34:11,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:34:11,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:11,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:11,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,689 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:34:11,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 116 treesize of output 86 [2021-12-06 22:34:11,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,695 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 52 treesize of output 60 [2021-12-06 22:34:11,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:11,702 INFO L354 Elim1Store]: treesize reduction 4, result has 80.0 percent of original size [2021-12-06 22:34:11,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 29 [2021-12-06 22:34:12,514 INFO L354 Elim1Store]: treesize reduction 194, result has 10.2 percent of original size [2021-12-06 22:34:12,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 251 treesize of output 121 [2021-12-06 22:34:12,526 INFO L354 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2021-12-06 22:34:12,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 34 [2021-12-06 22:34:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:34:12,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:34:12,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:12,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 147 treesize of output 133 [2021-12-06 22:34:12,648 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:12,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 112 [2021-12-06 22:34:12,712 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_173| Int) (v_arrayElimArr_226 (Array Int Int)) (v_arrayElimArr_225 (Array Int Int))) (or (not (= (select v_arrayElimArr_226 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_173| v_arrayElimArr_226)) (.cse0 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_173| v_arrayElimArr_225))) (let ((.cse4 (select (select .cse0 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse5 (select (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse1 (select (select .cse0 .cse4) .cse5)) (.cse2 (select (select .cse3 .cse4) .cse5))) (and (= (select (select .cse0 .cse1) .cse2) 0) (= (select (select .cse3 .cse1) .cse2) 0))))) (not (= (select v_arrayElimArr_225 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_173|) 0)))) is different from false [2021-12-06 22:34:12,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:12,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 249 treesize of output 235 [2021-12-06 22:34:13,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:13,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 214 [2021-12-06 22:34:13,195 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_173| Int) (v_arrayElimArr_228 (Array Int Int)) (v_arrayElimArr_227 (Array Int Int)) (v_arrayElimArr_226 (Array Int Int)) (v_arrayElimArr_225 (Array Int Int))) (let ((.cse1 (select v_arrayElimArr_226 0)) (.cse0 (select v_arrayElimArr_225 0))) (or (not (= (select |c_#valid| .cse0) 0)) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_173|) 0)) (not (= .cse1 0)) (let ((.cse2 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_228) |v_ULTIMATE.start_main_~l~0#1.base_173| v_arrayElimArr_226)) (.cse5 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_227) |v_ULTIMATE.start_main_~l~0#1.base_173| v_arrayElimArr_225))) (let ((.cse6 (select (select .cse5 .cse0) .cse1)) (.cse7 (select (select .cse2 .cse0) .cse1))) (let ((.cse3 (select (select .cse5 .cse6) .cse7)) (.cse4 (select (select .cse2 .cse6) .cse7))) (and (= (select (select .cse2 .cse3) .cse4) 0) (= 0 (select (select .cse5 .cse3) .cse4)))))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_227 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_228 0)))))) is different from false [2021-12-06 22:34:14,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:14,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 305 [2021-12-06 22:34:14,062 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:14,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 298 treesize of output 284 [2021-12-06 22:34:14,611 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_229 (Array Int Int)) (v_arrayElimArr_230 (Array Int Int)) (v_arrayElimArr_228 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_173| Int) (v_arrayElimArr_227 (Array Int Int)) (v_arrayElimArr_226 (Array Int Int)) (v_arrayElimArr_225 (Array Int Int))) (let ((.cse9 (select v_arrayElimArr_227 0))) (let ((.cse0 (store |c_#valid| .cse9 1)) (.cse1 (select v_arrayElimArr_225 0)) (.cse8 (select v_arrayElimArr_226 0))) (or (not (= (select .cse0 .cse1) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_230 0))) (let ((.cse5 (store (store (store |c_#memory_$Pointer$.offset| .cse9 v_arrayElimArr_229) .cse1 v_arrayElimArr_228) |v_ULTIMATE.start_main_~l~0#1.base_173| v_arrayElimArr_226)) (.cse2 (store (store (store |c_#memory_$Pointer$.base| .cse9 v_arrayElimArr_230) .cse1 v_arrayElimArr_227) |v_ULTIMATE.start_main_~l~0#1.base_173| v_arrayElimArr_225))) (let ((.cse6 (select (select .cse2 .cse1) .cse8)) (.cse7 (select (select .cse5 .cse1) .cse8))) (let ((.cse3 (select (select .cse2 .cse6) .cse7)) (.cse4 (select (select .cse5 .cse6) .cse7))) (and (= (select (select .cse2 .cse3) .cse4) 0) (= (select (select .cse5 .cse3) .cse4) 0))))) (not (= 0 (select v_arrayElimArr_228 0))) (not (= (select (store .cse0 .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_173|) 0)) (not (= .cse8 0)) (not (= (select v_arrayElimArr_229 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| .cse9) 0)))))) is different from false [2021-12-06 22:34:17,115 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:17,116 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 445 treesize of output 372 [2021-12-06 22:34:17,124 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:17,124 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 361 treesize of output 288 [2021-12-06 22:34:17,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 77 [2021-12-06 22:34:17,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:17,182 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:17,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 67789 treesize of output 62709 [2021-12-06 22:34:17,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:17,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62725 treesize of output 19965 [2021-12-06 22:34:18,171 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18957 treesize of output 15891 [2021-12-06 22:34:19,007 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12069 treesize of output 10183 [2021-12-06 22:34:19,057 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 10196 treesize of output 9712 [2021-12-06 22:34:19,163 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:34:19,164 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 37 treesize of output 31 [2021-12-06 22:34:19,257 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 22:34:19,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:34:19,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-06 22:34:19,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694846001] [2021-12-06 22:34:19,258 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 22:34:19,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 22:34:19,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:34:19,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 22:34:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=451, Unknown=3, NotChecked=132, Total=650 [2021-12-06 22:34:19,258 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 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) [2021-12-06 22:34:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:34:19,770 INFO L93 Difference]: Finished difference Result 225 states and 283 transitions. [2021-12-06 22:34:19,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:34:19,770 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 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 64 [2021-12-06 22:34:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:34:19,771 INFO L225 Difference]: With dead ends: 225 [2021-12-06 22:34:19,771 INFO L226 Difference]: Without dead ends: 127 [2021-12-06 22:34:19,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=834, Unknown=3, NotChecked=180, Total=1122 [2021-12-06 22:34:19,772 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 77 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:34:19,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 726 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:34:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-12-06 22:34:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 117. [2021-12-06 22:34:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3103448275862069) internal successors, (152), 116 states have internal predecessors, (152), 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) [2021-12-06 22:34:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2021-12-06 22:34:19,797 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 64 [2021-12-06 22:34:19,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:19,798 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2021-12-06 22:34:19,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 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) [2021-12-06 22:34:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2021-12-06 22:34:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:34:19,798 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:19,798 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:34:19,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 22:34:19,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-12-06 22:34:20,000 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -377962859, now seen corresponding path program 8 times [2021-12-06 22:34:20,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:20,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723204155] [2021-12-06 22:34:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:20,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:20,862 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 24 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:34:20,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723204155] [2021-12-06 22:34:20,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723204155] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:34:20,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67941814] [2021-12-06 22:34:20,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:34:20,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:34:20,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:34:20,863 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:34:20,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 22:34:21,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:34:21,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:34:21,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 134 conjunts are in the unsatisfiable core [2021-12-06 22:34:21,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:34:21,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:34:21,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:34:21,111 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 [2021-12-06 22:34:21,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:34:21,121 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:34:21,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:34:21,127 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 [2021-12-06 22:34:21,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:21,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:21,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:34:21,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:34:21,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:34:21,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,235 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:34:21,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:34:21,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:21,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:21,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-06 22:34:21,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 34 [2021-12-06 22:34:21,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,394 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:34:21,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:34:21,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,411 INFO L354 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2021-12-06 22:34:21,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2021-12-06 22:34:21,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:21,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:21,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,619 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:34:21,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 117 [2021-12-06 22:34:21,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,627 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 56 treesize of output 40 [2021-12-06 22:34:21,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,634 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 52 treesize of output 60 [2021-12-06 22:34:21,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:21,644 INFO L354 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2021-12-06 22:34:21,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 36 [2021-12-06 22:34:23,823 INFO L354 Elim1Store]: treesize reduction 182, result has 15.7 percent of original size [2021-12-06 22:34:23,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 325 treesize of output 151 [2021-12-06 22:34:23,837 INFO L354 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2021-12-06 22:34:23,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 34 [2021-12-06 22:34:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:34:23,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:34:24,400 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:24,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 271 [2021-12-06 22:34:24,404 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:24,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 229 [2021-12-06 22:34:24,446 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_181| Int) (v_arrayElimArr_240 (Array Int Int)) (v_arrayElimArr_239 (Array Int Int)) (v_ArrVal_4309 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_181| v_arrayElimArr_240)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_181| v_arrayElimArr_239))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse7 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select (select .cse5 .cse6) .cse7)) (.cse4 (select (select .cse2 .cse6) .cse7))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_181| v_ArrVal_4309) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= (select v_arrayElimArr_239 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select v_arrayElimArr_240 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_181|) 0)) (not (= 3 (select .cse0 (+ .cse1 8)))))))))) is different from false [2021-12-06 22:34:24,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:24,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 489 treesize of output 453 [2021-12-06 22:34:24,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:24,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 447 treesize of output 411 [2021-12-06 22:34:24,760 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_181| Int) (v_arrayElimArr_242 (Array Int Int)) (v_arrayElimArr_241 (Array Int Int)) (v_arrayElimArr_240 (Array Int Int)) (v_ArrVal_4301 (Array Int Int)) (v_arrayElimArr_239 (Array Int Int)) (v_ArrVal_4309 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_239 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_241) |v_ULTIMATE.start_main_~l~0#1.base_181| v_arrayElimArr_240)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_242) |v_ULTIMATE.start_main_~l~0#1.base_181| v_arrayElimArr_239))) (let ((.cse7 (select (select .cse6 .cse0) 0)) (.cse8 (select (select .cse3 .cse0) 0))) (let ((.cse4 (select (select .cse6 .cse7) .cse8)) (.cse5 (select (select .cse3 .cse7) .cse8))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_4301) |v_ULTIMATE.start_main_~l~0#1.base_181| v_ArrVal_4309) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_242 0))) (not (= (select v_arrayElimArr_240 0) 0)) (not (= 0 (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_181|))) (not (= (select |c_#valid| .cse0) 0)) (not (= (select v_arrayElimArr_241 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= 3 (select .cse1 (+ .cse2 8)))) (not (= (select .cse1 (+ .cse2 4)) 1))))))))) is different from false [2021-12-06 22:34:25,293 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:25,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 639 treesize of output 603 [2021-12-06 22:34:25,300 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:25,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 597 treesize of output 561 [2021-12-06 22:34:25,549 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_181| Int) (v_arrayElimArr_242 (Array Int Int)) (v_arrayElimArr_241 (Array Int Int)) (v_arrayElimArr_240 (Array Int Int)) (v_ArrVal_4301 (Array Int Int)) (v_arrayElimArr_244 (Array Int Int)) (v_arrayElimArr_243 (Array Int Int)) (v_arrayElimArr_239 (Array Int Int)) (v_ArrVal_4292 (Array Int Int)) (v_ArrVal_4309 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_242 0)) (.cse4 (select v_arrayElimArr_239 0))) (let ((.cse5 (store (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_243) .cse4 v_arrayElimArr_241) |v_ULTIMATE.start_main_~l~0#1.base_181| v_arrayElimArr_240)) (.cse8 (store (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_244) .cse4 v_arrayElimArr_242) |v_ULTIMATE.start_main_~l~0#1.base_181| v_arrayElimArr_239))) (let ((.cse9 (select (select .cse8 .cse4) 0)) (.cse10 (select (select .cse5 .cse4) 0))) (let ((.cse6 (select (select .cse8 .cse9) .cse10)) (.cse7 (select (select .cse5 .cse9) .cse10))) (let ((.cse1 (select (store (store (store |c_#memory_int| .cse0 v_ArrVal_4292) .cse4 v_ArrVal_4301) |v_ULTIMATE.start_main_~l~0#1.base_181| v_ArrVal_4309) (select (select .cse8 .cse6) .cse7))) (.cse2 (select (select .cse5 .cse6) .cse7)) (.cse3 (store |c_#valid| .cse0 1))) (or (not (= (select v_arrayElimArr_241 0) 0)) (not (= (select v_arrayElimArr_240 0) 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_243 0))) (not (= 3 (select .cse1 (+ 8 .cse2)))) (not (= (select .cse3 .cse4) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_244 0))) (not (= (select .cse1 (+ 4 .cse2)) 1)) (not (= (select (store .cse3 .cse4 1) |v_ULTIMATE.start_main_~l~0#1.base_181|) 0))))))))) is different from false [2021-12-06 22:34:26,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:26,637 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 901 treesize of output 743 [2021-12-06 22:34:26,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:26,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:26,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:26,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:26,717 INFO L354 Elim1Store]: treesize reduction 765, result has 3.2 percent of original size [2021-12-06 22:34:26,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 577031 treesize of output 540317 [2021-12-06 22:34:27,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:27,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 540285 treesize of output 369079 [2021-12-06 22:34:27,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:27,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:27,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:27,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:27,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:27,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:27,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:27,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:27,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:27,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:27,569 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 68303 treesize of output 56009 [2021-12-06 22:34:27,753 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 56065 treesize of output 45945 [2021-12-06 22:34:27,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45939 treesize of output 41781 [2021-12-06 22:34:27,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41772 treesize of output 38152 [2021-12-06 22:34:28,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:28,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:28,134 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-12-06 22:34:28,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38131 treesize of output 34297 [2021-12-06 22:34:28,370 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-12-06 22:34:28,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 33279 treesize of output 32083 [2021-12-06 22:34:28,551 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:34:28,551 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 31539 treesize of output 31225 [2021-12-06 22:34:34,332 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 39 not checked. [2021-12-06 22:34:34,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67941814] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:34:34,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:34:34,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 15] total 46 [2021-12-06 22:34:34,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904401412] [2021-12-06 22:34:34,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:34:34,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-06 22:34:34,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:34:34,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-06 22:34:34,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1696, Unknown=3, NotChecked=252, Total=2070 [2021-12-06 22:34:34,333 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 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) [2021-12-06 22:34:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:34:49,361 INFO L93 Difference]: Finished difference Result 219 states and 275 transitions. [2021-12-06 22:34:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 22:34:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 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 69 [2021-12-06 22:34:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:34:49,363 INFO L225 Difference]: With dead ends: 219 [2021-12-06 22:34:49,363 INFO L226 Difference]: Without dead ends: 173 [2021-12-06 22:34:49,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 123 SyntacticMatches, 8 SemanticMatches, 84 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=1082, Invalid=5733, Unknown=3, NotChecked=492, Total=7310 [2021-12-06 22:34:49,363 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 386 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 339 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:34:49,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1322 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 585 Invalid, 0 Unknown, 339 Unchecked, 0.8s Time] [2021-12-06 22:34:49,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-06 22:34:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 132. [2021-12-06 22:34:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.2900763358778626) internal successors, (169), 131 states have internal predecessors, (169), 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) [2021-12-06 22:34:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2021-12-06 22:34:49,394 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 69 [2021-12-06 22:34:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:49,395 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2021-12-06 22:34:49,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.086956521739131) internal successors, (188), 46 states have internal predecessors, (188), 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) [2021-12-06 22:34:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2021-12-06 22:34:49,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:34:49,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:49,395 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:34:49,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 22:34:49,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-06 22:34:49,597 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash -571741863, now seen corresponding path program 6 times [2021-12-06 22:34:49,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:49,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841079232] [2021-12-06 22:34:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:49,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 23 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:34:50,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:50,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841079232] [2021-12-06 22:34:50,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841079232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:34:50,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402395721] [2021-12-06 22:34:50,096 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 22:34:50,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:34:50,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:34:50,096 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:34:50,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 22:34:51,039 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 22:34:51,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:34:51,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 134 conjunts are in the unsatisfiable core [2021-12-06 22:34:51,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:34:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:34:51,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:34:51,119 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 [2021-12-06 22:34:51,123 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 [2021-12-06 22:34:51,133 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:34:51,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:34:51,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:34:51,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:51,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:51,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:34:51,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,238 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:34:51,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:34:51,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:34:51,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:34:51,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:51,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,384 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:34:51,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:34:51,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,403 INFO L354 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2021-12-06 22:34:51,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2021-12-06 22:34:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:34:51,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:34:51,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:51,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:34:51,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,628 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:34:51,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 117 [2021-12-06 22:34:51,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,642 INFO L354 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2021-12-06 22:34:51,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 36 [2021-12-06 22:34:51,647 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 56 treesize of output 40 [2021-12-06 22:34:51,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:51,653 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 52 treesize of output 60 [2021-12-06 22:34:53,796 INFO L354 Elim1Store]: treesize reduction 182, result has 15.7 percent of original size [2021-12-06 22:34:53,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 325 treesize of output 151 [2021-12-06 22:34:53,811 INFO L354 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2021-12-06 22:34:53,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 34 [2021-12-06 22:34:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 27 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:34:53,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:34:54,305 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:54,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 271 [2021-12-06 22:34:54,308 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:54,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 229 [2021-12-06 22:34:54,351 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_190| Int) (v_arrayElimArr_253 (Array Int Int)) (v_ArrVal_4534 (Array Int Int)) (v_arrayElimArr_254 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_190| v_arrayElimArr_254)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_190| v_arrayElimArr_253))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse7 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select (select .cse5 .cse6) .cse7)) (.cse4 (select (select .cse2 .cse6) .cse7))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_190| v_ArrVal_4534) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select v_arrayElimArr_254 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_253 0))) (not (= (select .cse0 (+ .cse1 4)) 1)) (not (= 3 (select .cse0 (+ .cse1 8)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_190|) 0)))))))) is different from false [2021-12-06 22:34:54,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:54,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 489 treesize of output 453 [2021-12-06 22:34:54,552 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:54,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 447 treesize of output 411 [2021-12-06 22:34:54,684 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_190| Int) (v_arrayElimArr_253 (Array Int Int)) (v_ArrVal_4522 (Array Int Int)) (v_ArrVal_4534 (Array Int Int)) (v_arrayElimArr_256 (Array Int Int)) (v_arrayElimArr_255 (Array Int Int)) (v_arrayElimArr_254 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_253 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_255) |v_ULTIMATE.start_main_~l~0#1.base_190| v_arrayElimArr_254)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_256) |v_ULTIMATE.start_main_~l~0#1.base_190| v_arrayElimArr_253))) (let ((.cse7 (select (select .cse6 .cse2) 0)) (.cse8 (select (select .cse3 .cse2) 0))) (let ((.cse4 (select (select .cse6 .cse7) .cse8)) (.cse5 (select (select .cse3 .cse7) .cse8))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_4522) |v_ULTIMATE.start_main_~l~0#1.base_190| v_ArrVal_4534) (select (select .cse6 .cse4) .cse5))) (.cse1 (select (select .cse3 .cse4) .cse5))) (or (not (= (select .cse0 (+ 4 .cse1)) 1)) (not (= (select .cse0 (+ 8 .cse1)) 3)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_190|) 0)) (not (= (select v_arrayElimArr_254 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_255 0))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_256 0))) (not (= (select |c_#valid| .cse2) 0))))))))) is different from false [2021-12-06 22:34:55,219 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:55,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 695 treesize of output 633 [2021-12-06 22:34:55,225 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:55,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 625 treesize of output 563 [2021-12-06 22:34:55,538 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_190| Int) (v_arrayElimArr_253 (Array Int Int)) (v_ArrVal_4510 (Array Int Int)) (v_ArrVal_4522 (Array Int Int)) (v_arrayElimArr_257 (Array Int Int)) (v_ArrVal_4534 (Array Int Int)) (v_arrayElimArr_256 (Array Int Int)) (v_arrayElimArr_255 (Array Int Int)) (v_arrayElimArr_254 (Array Int Int)) (v_arrayElimArr_258 (Array Int Int))) (let ((.cse5 (select v_arrayElimArr_256 0)) (.cse1 (select v_arrayElimArr_253 0))) (let ((.cse6 (store (store (store |c_#memory_$Pointer$.offset| .cse5 v_arrayElimArr_257) .cse1 v_arrayElimArr_255) |v_ULTIMATE.start_main_~l~0#1.base_190| v_arrayElimArr_254)) (.cse9 (store (store (store |c_#memory_$Pointer$.base| .cse5 v_arrayElimArr_258) .cse1 v_arrayElimArr_256) |v_ULTIMATE.start_main_~l~0#1.base_190| v_arrayElimArr_253))) (let ((.cse10 (select (select .cse9 .cse1) 0)) (.cse11 (select (select .cse6 .cse1) 0))) (let ((.cse7 (select (select .cse9 .cse10) .cse11)) (.cse8 (select (select .cse6 .cse10) .cse11))) (let ((.cse2 (select (store (store (store |c_#memory_int| .cse5 v_ArrVal_4510) .cse1 v_ArrVal_4522) |v_ULTIMATE.start_main_~l~0#1.base_190| v_ArrVal_4534) (select (select .cse9 .cse7) .cse8))) (.cse3 (select (select .cse6 .cse7) .cse8)) (.cse0 (store |c_#valid| .cse5 1)) (.cse4 (select v_arrayElimArr_255 0))) (or (not (= (select (store .cse0 .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_190|) 0)) (not (= 3 (select .cse2 (+ .cse3 8)))) (not (= (select .cse2 (+ .cse3 4)) 1)) (not (= .cse4 0)) (not (= (select v_arrayElimArr_254 0) 0)) (not (= (select v_arrayElimArr_257 .cse4) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select .cse0 .cse1) 0)) (not (= (select |c_#valid| .cse5) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_258 .cse4)))))))))) is different from false [2021-12-06 22:34:56,945 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:56,945 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1129 treesize of output 865 [2021-12-06 22:34:56,954 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:34:56,954 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 849 treesize of output 585 [2021-12-06 22:34:56,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:56,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:34:56,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 287 treesize of output 183 [2021-12-06 22:34:56,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 277 treesize of output 249 [2021-12-06 22:34:56,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:56,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:34:57,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 159669 treesize of output 155565 [2021-12-06 22:35:03,053 WARN L227 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 427 DAG size of output: 407 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 22:35:03,375 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 136607 treesize of output 131943 [2021-12-06 22:35:03,705 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 131937 treesize of output 102835 [2021-12-06 22:35:04,041 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 102826 treesize of output 84774 [2021-12-06 22:35:04,727 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-06 22:35:04,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:35:04,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-12-06 22:35:04,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272665090] [2021-12-06 22:35:04,727 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 22:35:04,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:35:04,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:35:04,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1241, Unknown=3, NotChecked=216, Total=1560 [2021-12-06 22:35:04,728 INFO L87 Difference]: Start difference. First operand 132 states and 169 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) [2021-12-06 22:35:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:13,667 INFO L93 Difference]: Finished difference Result 356 states and 440 transitions. [2021-12-06 22:35:13,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-06 22:35:13,667 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 69 [2021-12-06 22:35:13,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:13,668 INFO L225 Difference]: With dead ends: 356 [2021-12-06 22:35:13,668 INFO L226 Difference]: Without dead ends: 310 [2021-12-06 22:35:13,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1627 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=1822, Invalid=6559, Unknown=3, NotChecked=546, Total=8930 [2021-12-06 22:35:13,669 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 976 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:13,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 489 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:35:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-12-06 22:35:13,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 119. [2021-12-06 22:35:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.305084745762712) internal successors, (154), 118 states have internal predecessors, (154), 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) [2021-12-06 22:35:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 154 transitions. [2021-12-06 22:35:13,697 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 154 transitions. Word has length 69 [2021-12-06 22:35:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:13,698 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 154 transitions. [2021-12-06 22:35:13,698 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) [2021-12-06 22:35:13,698 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 154 transitions. [2021-12-06 22:35:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:35:13,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:13,698 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:13,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 22:35:13,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 22:35:13,900 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:35:13,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash -668441507, now seen corresponding path program 8 times [2021-12-06 22:35:13,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:13,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659002946] [2021-12-06 22:35:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:13,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:14,832 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:14,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:14,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659002946] [2021-12-06 22:35:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659002946] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:14,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941907487] [2021-12-06 22:35:14,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:35:14,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:14,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:14,833 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:14,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 22:35:15,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:35:15,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:35:15,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 136 conjunts are in the unsatisfiable core [2021-12-06 22:35:15,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:15,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:35:15,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:35:15,083 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 [2021-12-06 22:35:15,087 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 [2021-12-06 22:35:15,095 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:35:15,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:35:15,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:35:15,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:15,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:15,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:35:15,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 29 treesize of output 25 [2021-12-06 22:35:15,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,223 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:35:15,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:35:15,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:35:15,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:15,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:15,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,402 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:35:15,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 132 treesize of output 92 [2021-12-06 22:35:15,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,418 INFO L354 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2021-12-06 22:35:15,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2021-12-06 22:35:15,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 43 [2021-12-06 22:35:15,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:35:15,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:15,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:15,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,680 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:35:15,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 216 treesize of output 126 [2021-12-06 22:35:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,689 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 71 treesize of output 65 [2021-12-06 22:35:15,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:15,700 INFO L354 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2021-12-06 22:35:15,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 36 [2021-12-06 22:35:15,704 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 56 treesize of output 40 [2021-12-06 22:35:18,154 INFO L354 Elim1Store]: treesize reduction 182, result has 15.7 percent of original size [2021-12-06 22:35:18,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 344 treesize of output 158 [2021-12-06 22:35:18,169 INFO L354 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2021-12-06 22:35:18,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 37 [2021-12-06 22:35:18,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:18,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:18,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:18,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:18,290 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:18,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 32 [2021-12-06 22:35:18,297 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:18,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:35:18,679 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:18,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 271 [2021-12-06 22:35:18,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:18,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 229 [2021-12-06 22:35:18,724 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_268 (Array Int Int)) (v_arrayElimArr_267 (Array Int Int)) (v_ArrVal_4755 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_198| Int)) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_198| v_arrayElimArr_268)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_198| v_arrayElimArr_267))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse7 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select (select .cse5 .cse6) .cse7)) (.cse4 (select (select .cse2 .cse6) .cse7))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_198| v_ArrVal_4755) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_268 0))) (not (= 2 (select .cse0 (+ 8 .cse1)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_198|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_267 0))))))))) is different from false [2021-12-06 22:35:18,919 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:18,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 577 treesize of output 515 [2021-12-06 22:35:18,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:18,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 507 treesize of output 445 [2021-12-06 22:35:19,077 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_270 (Array Int Int)) (v_arrayElimArr_268 (Array Int Int)) (v_arrayElimArr_267 (Array Int Int)) (v_ArrVal_4755 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_198| Int) (v_ArrVal_4746 (Array Int Int)) (v_arrayElimArr_269 (Array Int Int))) (let ((.cse3 (select v_arrayElimArr_267 0))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse3 v_arrayElimArr_270) |v_ULTIMATE.start_main_~l~0#1.base_198| v_arrayElimArr_268)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse3 v_arrayElimArr_269) |v_ULTIMATE.start_main_~l~0#1.base_198| v_arrayElimArr_267)) (.cse2 (select v_arrayElimArr_268 0))) (let ((.cse8 (select (select .cse7 .cse3) .cse2)) (.cse9 (select (select .cse4 .cse3) .cse2))) (let ((.cse5 (select (select .cse7 .cse8) .cse9)) (.cse6 (select (select .cse4 .cse8) .cse9))) (let ((.cse0 (select (store (store |c_#memory_int| .cse3 v_ArrVal_4746) |v_ULTIMATE.start_main_~l~0#1.base_198| v_ArrVal_4755) (select (select .cse7 .cse5) .cse6))) (.cse1 (select (select .cse4 .cse5) .cse6))) (or (not (= 2 (select .cse0 (+ .cse1 8)))) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_269 .cse2))) (not (= (select |c_#valid| .cse3) 0)) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select (store |c_#valid| .cse3 1) |v_ULTIMATE.start_main_~l~0#1.base_198|) 0)) (not (= .cse2 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_270 .cse2)))))))))) is different from false [2021-12-06 22:35:19,735 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:19,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 731 treesize of output 695 [2021-12-06 22:35:19,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:19,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 689 treesize of output 653 [2021-12-06 22:35:20,233 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_271 (Array Int Int)) (v_arrayElimArr_270 (Array Int Int)) (v_ArrVal_4730 (Array Int Int)) (v_arrayElimArr_272 (Array Int Int)) (v_arrayElimArr_268 (Array Int Int)) (v_arrayElimArr_267 (Array Int Int)) (v_ArrVal_4755 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_198| Int) (v_ArrVal_4746 (Array Int Int)) (v_arrayElimArr_269 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_268 0))) (let ((.cse5 (select v_arrayElimArr_269 .cse2)) (.cse4 (select v_arrayElimArr_267 0))) (let ((.cse6 (store (store (store |c_#memory_$Pointer$.offset| .cse5 v_arrayElimArr_271) .cse4 v_arrayElimArr_270) |v_ULTIMATE.start_main_~l~0#1.base_198| v_arrayElimArr_268)) (.cse9 (store (store (store |c_#memory_$Pointer$.base| .cse5 v_arrayElimArr_272) .cse4 v_arrayElimArr_269) |v_ULTIMATE.start_main_~l~0#1.base_198| v_arrayElimArr_267))) (let ((.cse10 (select (select .cse9 .cse4) .cse2)) (.cse11 (select (select .cse6 .cse4) .cse2))) (let ((.cse7 (select (select .cse9 .cse10) .cse11)) (.cse8 (select (select .cse6 .cse10) .cse11))) (let ((.cse0 (select (store (store (store |c_#memory_int| .cse5 v_ArrVal_4730) .cse4 v_ArrVal_4746) |v_ULTIMATE.start_main_~l~0#1.base_198| v_ArrVal_4755) (select (select .cse9 .cse7) .cse8))) (.cse1 (select (select .cse6 .cse7) .cse8)) (.cse3 (store |c_#valid| .cse5 1))) (or (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= (select v_arrayElimArr_270 .cse2) 0)) (not (= (select .cse3 .cse4) 0)) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select (store .cse3 .cse4 1) |v_ULTIMATE.start_main_~l~0#1.base_198|) 0)) (not (= (select |c_#valid| .cse5) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_272 0))) (not (= .cse2 0)) (not (= (select v_arrayElimArr_271 0) |c_ULTIMATE.start_main_~l~0#1.offset|)))))))))) is different from false [2021-12-06 22:35:22,732 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:22,732 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 993 treesize of output 835 [2021-12-06 22:35:22,741 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:22,741 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 825 treesize of output 667 [2021-12-06 22:35:22,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:22,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:22,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:22,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 325 treesize of output 207 [2021-12-06 22:35:22,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 237 [2021-12-06 22:35:22,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:22,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:22,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:22,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 13719 treesize of output 13329 [2021-12-06 22:35:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:22,852 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 13385 treesize of output 12657 [2021-12-06 22:35:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:22,899 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12651 treesize of output 9013 [2021-12-06 22:35:23,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:23,169 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 8716 treesize of output 6620 [2021-12-06 22:35:24,777 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:35:24,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 1 [2021-12-06 22:35:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 39 not checked. [2021-12-06 22:35:24,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941907487] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:35:24,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:35:24,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 15] total 43 [2021-12-06 22:35:24,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873414897] [2021-12-06 22:35:24,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:35:24,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 22:35:24,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:24,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 22:35:24,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1447, Unknown=6, NotChecked=234, Total=1806 [2021-12-06 22:35:24,782 INFO L87 Difference]: Start difference. First operand 119 states and 154 transitions. Second operand has 43 states, 43 states have (on average 4.348837209302325) internal successors, (187), 43 states have internal predecessors, (187), 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) [2021-12-06 22:35:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:31,579 INFO L93 Difference]: Finished difference Result 208 states and 252 transitions. [2021-12-06 22:35:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-06 22:35:31,580 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.348837209302325) internal successors, (187), 43 states have internal predecessors, (187), 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 71 [2021-12-06 22:35:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:31,581 INFO L225 Difference]: With dead ends: 208 [2021-12-06 22:35:31,581 INFO L226 Difference]: Without dead ends: 206 [2021-12-06 22:35:31,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 132 SyntacticMatches, 13 SemanticMatches, 81 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1562 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=936, Invalid=5390, Unknown=6, NotChecked=474, Total=6806 [2021-12-06 22:35:31,581 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 283 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 1878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 777 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:31,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 1403 Invalid, 1878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 863 Invalid, 0 Unknown, 777 Unchecked, 0.9s Time] [2021-12-06 22:35:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-06 22:35:31,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 149. [2021-12-06 22:35:31,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.2837837837837838) internal successors, (190), 148 states have internal predecessors, (190), 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) [2021-12-06 22:35:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 190 transitions. [2021-12-06 22:35:31,615 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 190 transitions. Word has length 71 [2021-12-06 22:35:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:31,615 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 190 transitions. [2021-12-06 22:35:31,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.348837209302325) internal successors, (187), 43 states have internal predecessors, (187), 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) [2021-12-06 22:35:31,616 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 190 transitions. [2021-12-06 22:35:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:35:31,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:31,616 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:31,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-06 22:35:31,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 22:35:31,818 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:35:31,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:31,819 INFO L85 PathProgramCache]: Analyzing trace with hash 2088496673, now seen corresponding path program 9 times [2021-12-06 22:35:31,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:31,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572442823] [2021-12-06 22:35:31,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:31,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:32,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:32,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572442823] [2021-12-06 22:35:32,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572442823] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:32,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818928709] [2021-12-06 22:35:32,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:35:32,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:32,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:32,781 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:32,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 22:35:33,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 22:35:33,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:35:33,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-06 22:35:33,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:33,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:35:33,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:35:33,868 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 [2021-12-06 22:35:33,871 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 [2021-12-06 22:35:33,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:35:33,882 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:35:33,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:35:33,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:33,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:33,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:35:33,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:35:33,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,993 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:35:33,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:35:33,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:33,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:35:34,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:34,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:34,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,139 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:35:34,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:35:34,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:35:34,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:35:34,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,161 INFO L354 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2021-12-06 22:35:34,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2021-12-06 22:35:34,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:34,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:34,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,370 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:35:34,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 117 [2021-12-06 22:35:34,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,379 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 52 treesize of output 60 [2021-12-06 22:35:34,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,383 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 56 treesize of output 40 [2021-12-06 22:35:34,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:34,394 INFO L354 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2021-12-06 22:35:34,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 36 [2021-12-06 22:35:36,916 INFO L354 Elim1Store]: treesize reduction 182, result has 15.7 percent of original size [2021-12-06 22:35:36,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 325 treesize of output 151 [2021-12-06 22:35:36,932 INFO L354 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2021-12-06 22:35:36,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 34 [2021-12-06 22:35:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:37,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:35:37,350 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:37,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 271 [2021-12-06 22:35:37,353 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:37,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 229 [2021-12-06 22:35:37,391 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_207| Int) (v_arrayElimArr_282 (Array Int Int)) (v_arrayElimArr_283 (Array Int Int)) (v_ArrVal_4975 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_283)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_282))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse7 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select (select .cse5 .cse6) .cse7)) (.cse4 (select (select .cse2 .cse6) .cse7))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_207| v_ArrVal_4975) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_207|) 0)) (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_282 0))) (not (= (select v_arrayElimArr_283 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select .cse0 (+ .cse1 4)) 0)))))))) is different from false [2021-12-06 22:35:37,570 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:37,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 489 treesize of output 453 [2021-12-06 22:35:37,574 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:37,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 447 treesize of output 411 [2021-12-06 22:35:37,676 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_282 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_207| Int) (v_arrayElimArr_285 (Array Int Int)) (v_arrayElimArr_284 (Array Int Int)) (v_arrayElimArr_283 (Array Int Int)) (v_ArrVal_4963 (Array Int Int)) (v_ArrVal_4975 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_282 0))) (let ((.cse3 (store (store |c_#memory_$Pointer$.offset| .cse0 v_arrayElimArr_284) |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_283)) (.cse6 (store (store |c_#memory_$Pointer$.base| .cse0 v_arrayElimArr_285) |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_282))) (let ((.cse7 (select (select .cse6 .cse0) 0)) (.cse8 (select (select .cse3 .cse0) 0))) (let ((.cse4 (select (select .cse6 .cse7) .cse8)) (.cse5 (select (select .cse3 .cse7) .cse8))) (let ((.cse1 (select (store (store |c_#memory_int| .cse0 v_ArrVal_4963) |v_ULTIMATE.start_main_~l~0#1.base_207| v_ArrVal_4975) (select (select .cse6 .cse4) .cse5))) (.cse2 (select (select .cse3 .cse4) .cse5))) (or (not (= (select v_arrayElimArr_283 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_284 0))) (not (= (select (store |c_#valid| .cse0 1) |v_ULTIMATE.start_main_~l~0#1.base_207|) 0)) (not (= (select |c_#valid| .cse0) 0)) (not (= (select .cse1 (+ .cse2 4)) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_285 0))) (not (= (select .cse1 (+ .cse2 8)) 2))))))))) is different from false [2021-12-06 22:35:38,171 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:38,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 639 treesize of output 603 [2021-12-06 22:35:38,178 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:38,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 597 treesize of output 561 [2021-12-06 22:35:38,413 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_282 (Array Int Int)) (|v_ULTIMATE.start_main_~l~0#1.base_207| Int) (v_arrayElimArr_286 (Array Int Int)) (v_arrayElimArr_285 (Array Int Int)) (v_arrayElimArr_284 (Array Int Int)) (v_ArrVal_4950 (Array Int Int)) (v_arrayElimArr_283 (Array Int Int)) (v_ArrVal_4963 (Array Int Int)) (v_ArrVal_4975 (Array Int Int)) (v_arrayElimArr_287 (Array Int Int))) (let ((.cse4 (select v_arrayElimArr_285 0)) (.cse1 (select v_arrayElimArr_282 0))) (let ((.cse5 (store (store (store |c_#memory_$Pointer$.offset| .cse4 v_arrayElimArr_286) .cse1 v_arrayElimArr_284) |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_283)) (.cse8 (store (store (store |c_#memory_$Pointer$.base| .cse4 v_arrayElimArr_287) .cse1 v_arrayElimArr_285) |v_ULTIMATE.start_main_~l~0#1.base_207| v_arrayElimArr_282))) (let ((.cse9 (select (select .cse8 .cse1) 0)) (.cse10 (select (select .cse5 .cse1) 0))) (let ((.cse6 (select (select .cse8 .cse9) .cse10)) (.cse7 (select (select .cse5 .cse9) .cse10))) (let ((.cse2 (select (store (store (store |c_#memory_int| .cse4 v_ArrVal_4950) .cse1 v_ArrVal_4963) |v_ULTIMATE.start_main_~l~0#1.base_207| v_ArrVal_4975) (select (select .cse8 .cse6) .cse7))) (.cse3 (select (select .cse5 .cse6) .cse7)) (.cse0 (store |c_#valid| .cse4 1))) (or (not (= (select .cse0 .cse1) 0)) (not (= 0 (select .cse2 (+ .cse3 4)))) (not (= (select |c_#valid| .cse4) 0)) (not (= 2 (select .cse2 (+ .cse3 8)))) (not (= (select v_arrayElimArr_283 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_287 0))) (not (= (select v_arrayElimArr_284 0) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_286 0))) (not (= (select (store .cse0 .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_207|) 0))))))))) is different from false [2021-12-06 22:35:39,638 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:39,638 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 901 treesize of output 743 [2021-12-06 22:35:39,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:39,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:39,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:39,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:39,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:39,738 INFO L354 Elim1Store]: treesize reduction 765, result has 3.2 percent of original size [2021-12-06 22:35:39,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 569307 treesize of output 532593 [2021-12-06 22:35:40,165 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:40,165 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 532561 treesize of output 363659 [2021-12-06 22:35:40,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:40,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:40,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:40,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:40,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:40,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:35:40,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:40,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:40,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:40,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:40,432 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 67151 treesize of output 54857 [2021-12-06 22:35:40,579 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 54913 treesize of output 45177 [2021-12-06 22:35:40,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45171 treesize of output 42357 [2021-12-06 22:35:40,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42348 treesize of output 38152 [2021-12-06 22:35:40,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:40,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:40,874 INFO L354 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2021-12-06 22:35:40,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38131 treesize of output 36601 [2021-12-06 22:35:41,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:41,055 INFO L354 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2021-12-06 22:35:41,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36351 treesize of output 33281 [2021-12-06 22:35:41,215 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-06 22:35:41,215 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 32243 treesize of output 31489 [2021-12-06 22:35:48,849 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-12-06 22:35:48,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 1 [2021-12-06 22:35:48,854 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 39 not checked. [2021-12-06 22:35:48,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818928709] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:35:48,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:35:48,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 15] total 43 [2021-12-06 22:35:48,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045104656] [2021-12-06 22:35:48,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:35:48,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-12-06 22:35:48,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-12-06 22:35:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1445, Unknown=6, NotChecked=234, Total=1806 [2021-12-06 22:35:48,855 INFO L87 Difference]: Start difference. First operand 149 states and 190 transitions. Second operand has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 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) [2021-12-06 22:35:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:53,978 INFO L93 Difference]: Finished difference Result 223 states and 274 transitions. [2021-12-06 22:35:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-06 22:35:53,979 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 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 71 [2021-12-06 22:35:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:53,980 INFO L225 Difference]: With dead ends: 223 [2021-12-06 22:35:53,980 INFO L226 Difference]: Without dead ends: 221 [2021-12-06 22:35:53,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 131 SyntacticMatches, 15 SemanticMatches, 79 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=880, Invalid=5132, Unknown=6, NotChecked=462, Total=6480 [2021-12-06 22:35:53,980 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 244 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1484 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 507 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:53,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1484 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 541 Invalid, 0 Unknown, 507 Unchecked, 0.7s Time] [2021-12-06 22:35:53,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-06 22:35:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 149. [2021-12-06 22:35:54,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.2837837837837838) internal successors, (190), 148 states have internal predecessors, (190), 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) [2021-12-06 22:35:54,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 190 transitions. [2021-12-06 22:35:54,015 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 190 transitions. Word has length 71 [2021-12-06 22:35:54,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:54,015 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 190 transitions. [2021-12-06 22:35:54,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 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) [2021-12-06 22:35:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 190 transitions. [2021-12-06 22:35:54,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:35:54,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:54,015 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:54,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-06 22:35:54,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 22:35:54,217 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:35:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1656231391, now seen corresponding path program 10 times [2021-12-06 22:35:54,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:54,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993411161] [2021-12-06 22:35:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:54,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:54,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993411161] [2021-12-06 22:35:54,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993411161] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929933180] [2021-12-06 22:35:54,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:35:54,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:54,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:54,775 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:54,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 22:35:54,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:35:54,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:35:54,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 136 conjunts are in the unsatisfiable core [2021-12-06 22:35:54,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:54,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:54,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:54,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:54,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:35:54,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:35:55,026 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 [2021-12-06 22:35:55,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:35:55,037 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:35:55,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:35:55,044 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 [2021-12-06 22:35:55,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:55,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:55,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 18 [2021-12-06 22:35:55,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:35:55,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,153 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:35:55,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:35:55,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:35:55,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:55,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:55,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,306 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:35:55,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:35:55,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:35:55,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:35:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,329 INFO L354 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2021-12-06 22:35:55,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2021-12-06 22:35:55,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:55,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:35:55,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,535 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:35:55,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 117 [2021-12-06 22:35:55,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,549 INFO L354 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2021-12-06 22:35:55,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 36 [2021-12-06 22:35:55,555 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 56 treesize of output 40 [2021-12-06 22:35:55,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:35:55,562 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 52 treesize of output 60 [2021-12-06 22:35:57,996 INFO L354 Elim1Store]: treesize reduction 182, result has 15.7 percent of original size [2021-12-06 22:35:57,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 325 treesize of output 151 [2021-12-06 22:35:58,010 INFO L354 Elim1Store]: treesize reduction 15, result has 40.0 percent of original size [2021-12-06 22:35:58,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 34 [2021-12-06 22:35:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:35:58,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:35:58,409 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:58,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 307 treesize of output 271 [2021-12-06 22:35:58,412 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:58,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 265 treesize of output 229 [2021-12-06 22:35:58,455 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_216| Int) (v_arrayElimArr_297 (Array Int Int)) (v_ArrVal_5192 (Array Int Int)) (v_arrayElimArr_298 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_216| v_arrayElimArr_298)) (.cse5 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_216| v_arrayElimArr_297))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse7 (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse3 (select (select .cse5 .cse6) .cse7)) (.cse4 (select (select .cse2 .cse6) .cse7))) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_216| v_ArrVal_5192) (select (select .cse5 .cse3) .cse4))) (.cse1 (select (select .cse2 .cse3) .cse4))) (or (not (= (select .cse0 (+ 8 .cse1)) 2)) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= (select v_arrayElimArr_298 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_297 0))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_216|) 0)))))))) is different from false [2021-12-06 22:35:58,646 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:58,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 521 treesize of output 485 [2021-12-06 22:35:58,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:58,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 479 treesize of output 443 [2021-12-06 22:35:58,752 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_216| Int) (v_arrayElimArr_297 (Array Int Int)) (v_arrayElimArr_300 (Array Int Int)) (v_arrayElimArr_299 (Array Int Int)) (v_ArrVal_5192 (Array Int Int)) (v_arrayElimArr_298 (Array Int Int)) (v_ArrVal_5183 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_297 0))) (let ((.cse4 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_300) |v_ULTIMATE.start_main_~l~0#1.base_216| v_arrayElimArr_298)) (.cse7 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_299) |v_ULTIMATE.start_main_~l~0#1.base_216| v_arrayElimArr_297)) (.cse3 (select v_arrayElimArr_298 0))) (let ((.cse8 (select (select .cse7 .cse2) .cse3)) (.cse9 (select (select .cse4 .cse2) .cse3))) (let ((.cse5 (select (select .cse7 .cse8) .cse9)) (.cse6 (select (select .cse4 .cse8) .cse9))) (let ((.cse0 (select (store (store |c_#memory_int| .cse2 v_ArrVal_5183) |v_ULTIMATE.start_main_~l~0#1.base_216| v_ArrVal_5192) (select (select .cse7 .cse5) .cse6))) (.cse1 (select (select .cse4 .cse5) .cse6))) (or (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= 2 (select .cse0 (+ 8 .cse1)))) (not (= (select v_arrayElimArr_300 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_216|) 0)) (not (= .cse3 0)) (not (= (select |c_#valid| .cse2) 0)) (not (= (select v_arrayElimArr_299 0) |c_ULTIMATE.start_main_~l~0#1.base|))))))))) is different from false [2021-12-06 22:35:59,210 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:59,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 671 treesize of output 635 [2021-12-06 22:35:59,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:35:59,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 629 treesize of output 593 [2021-12-06 22:35:59,471 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_216| Int) (v_arrayElimArr_297 (Array Int Int)) (v_arrayElimArr_301 (Array Int Int)) (v_arrayElimArr_300 (Array Int Int)) (v_arrayElimArr_299 (Array Int Int)) (v_ArrVal_5170 (Array Int Int)) (v_ArrVal_5192 (Array Int Int)) (v_arrayElimArr_298 (Array Int Int)) (v_ArrVal_5183 (Array Int Int)) (v_arrayElimArr_302 (Array Int Int))) (let ((.cse4 (select v_arrayElimArr_299 0)) (.cse1 (select v_arrayElimArr_297 0))) (let ((.cse6 (store (store (store |c_#memory_$Pointer$.offset| .cse4 v_arrayElimArr_301) .cse1 v_arrayElimArr_300) |v_ULTIMATE.start_main_~l~0#1.base_216| v_arrayElimArr_298)) (.cse9 (store (store (store |c_#memory_$Pointer$.base| .cse4 v_arrayElimArr_302) .cse1 v_arrayElimArr_299) |v_ULTIMATE.start_main_~l~0#1.base_216| v_arrayElimArr_297)) (.cse5 (select v_arrayElimArr_298 0))) (let ((.cse10 (select (select .cse9 .cse1) .cse5)) (.cse11 (select (select .cse6 .cse1) .cse5))) (let ((.cse7 (select (select .cse9 .cse10) .cse11)) (.cse8 (select (select .cse6 .cse10) .cse11))) (let ((.cse0 (store |c_#valid| .cse4 1)) (.cse2 (select (store (store (store |c_#memory_int| .cse4 v_ArrVal_5170) .cse1 v_ArrVal_5183) |v_ULTIMATE.start_main_~l~0#1.base_216| v_ArrVal_5192) (select (select .cse9 .cse7) .cse8))) (.cse3 (select (select .cse6 .cse7) .cse8))) (or (not (= (select (store .cse0 .cse1 1) |v_ULTIMATE.start_main_~l~0#1.base_216|) 0)) (not (= (select v_arrayElimArr_300 0) 0)) (not (= (select .cse0 .cse1) 0)) (not (= (select .cse2 (+ .cse3 4)) 0)) (not (= (select .cse2 (+ .cse3 8)) 2)) (not (= (select v_arrayElimArr_301 0) |c_ULTIMATE.start_main_~l~0#1.offset|)) (not (= (select |c_#valid| .cse4) 0)) (not (= .cse5 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_302 0)))))))))) is different from false [2021-12-06 22:36:00,523 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:00,523 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 989 treesize of output 805 [2021-12-06 22:36:00,531 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:00,531 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 793 treesize of output 609 [2021-12-06 22:36:00,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 191 [2021-12-06 22:36:00,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:00,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,581 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:00,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 69369 treesize of output 64383 [2021-12-06 22:36:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:00,946 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 64407 treesize of output 62609 [2021-12-06 22:36:01,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:01,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:01,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62609 treesize of output 18381 [2021-12-06 22:36:01,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:01,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:01,553 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18090 treesize of output 12792 [2021-12-06 22:36:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 39 not checked. [2021-12-06 22:36:04,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929933180] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:04,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:36:04,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 38 [2021-12-06 22:36:04,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957944055] [2021-12-06 22:36:04,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:04,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 22:36:04,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:04,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 22:36:04,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1093, Unknown=6, NotChecked=204, Total=1406 [2021-12-06 22:36:04,006 INFO L87 Difference]: Start difference. First operand 149 states and 190 transitions. Second operand has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 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) [2021-12-06 22:36:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:08,618 INFO L93 Difference]: Finished difference Result 254 states and 308 transitions. [2021-12-06 22:36:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-12-06 22:36:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 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 71 [2021-12-06 22:36:08,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:08,619 INFO L225 Difference]: With dead ends: 254 [2021-12-06 22:36:08,620 INFO L226 Difference]: Without dead ends: 252 [2021-12-06 22:36:08,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 91 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 2198 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=904, Invalid=7112, Unknown=6, NotChecked=534, Total=8556 [2021-12-06 22:36:08,620 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 175 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:08,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1217 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1172 Invalid, 0 Unknown, 700 Unchecked, 0.9s Time] [2021-12-06 22:36:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-12-06 22:36:08,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 163. [2021-12-06 22:36:08,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.2777777777777777) internal successors, (207), 162 states have internal predecessors, (207), 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) [2021-12-06 22:36:08,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 207 transitions. [2021-12-06 22:36:08,656 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 207 transitions. Word has length 71 [2021-12-06 22:36:08,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:08,656 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 207 transitions. [2021-12-06 22:36:08,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.631578947368421) internal successors, (176), 38 states have internal predecessors, (176), 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) [2021-12-06 22:36:08,656 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 207 transitions. [2021-12-06 22:36:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:36:08,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:08,656 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:08,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-06 22:36:08,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 22:36:08,858 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:08,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:08,859 INFO L85 PathProgramCache]: Analyzing trace with hash 542631457, now seen corresponding path program 11 times [2021-12-06 22:36:08,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:08,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508000114] [2021-12-06 22:36:08,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:08,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:09,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:09,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508000114] [2021-12-06 22:36:09,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508000114] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:36:09,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804179217] [2021-12-06 22:36:09,817 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:36:09,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:09,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:09,818 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:36:09,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 22:36:11,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 22:36:11,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:36:11,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 155 conjunts are in the unsatisfiable core [2021-12-06 22:36:11,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:11,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:36:11,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:11,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:11,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:11,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:36:11,993 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 [2021-12-06 22:36:11,996 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 [2021-12-06 22:36:12,016 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:36:12,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:36:12,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:36:12,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:36:12,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:36:12,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:36:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:36:12,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,135 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:36:12,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:36:12,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:36:12,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:36:12,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:36:12,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 34 [2021-12-06 22:36:12,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,295 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:36:12,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:36:12,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2021-12-06 22:36:12,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,312 INFO L354 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2021-12-06 22:36:12,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2021-12-06 22:36:12,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:36:12,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:36:12,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,527 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:36:12,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 117 [2021-12-06 22:36:12,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,540 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 52 treesize of output 60 [2021-12-06 22:36:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:12,551 INFO L354 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2021-12-06 22:36:12,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 36 [2021-12-06 22:36:12,555 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 56 treesize of output 40 [2021-12-06 22:36:16,688 INFO L354 Elim1Store]: treesize reduction 190, result has 12.0 percent of original size [2021-12-06 22:36:16,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 425 treesize of output 191 [2021-12-06 22:36:16,712 INFO L354 Elim1Store]: treesize reduction 79, result has 11.2 percent of original size [2021-12-06 22:36:16,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 9 case distinctions, treesize of input 96 treesize of output 62 [2021-12-06 22:36:17,046 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:36:17,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:36:18,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:18,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 380 treesize of output 335 [2021-12-06 22:36:18,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:18,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 329 treesize of output 284 [2021-12-06 22:36:18,072 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_225| Int) (v_arrayElimArr_312 (Array Int Int)) (v_arrayElimArr_311 (Array Int Int)) (v_ArrVal_5414 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_225| v_arrayElimArr_312)) (.cse7 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_225| v_arrayElimArr_311))) (let ((.cse8 (select (select .cse7 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse9 (select (select .cse6 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse4 (select (select .cse7 .cse8) .cse9)) (.cse5 (select (select .cse6 .cse8) .cse9)) (.cse3 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_225| v_ArrVal_5414))) (let ((.cse0 (select .cse3 |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse1 (select .cse3 (select (select .cse7 .cse4) .cse5))) (.cse2 (select (select .cse6 .cse4) .cse5))) (or (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)) 2) (not (= (select v_arrayElimArr_311 0) |c_ULTIMATE.start_main_~l~0#1.base|)) (not (= (select .cse0 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_312 0))) (not (= (select .cse1 (+ 4 .cse2)) 0)) (not (= (select v_ArrVal_5414 4) 1)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_225|) 0)) (not (= (select .cse1 (+ 8 .cse2)) 2)) (not (= (select (select .cse3 .cse4) (+ .cse5 4)) 1)))))))) is different from false [2021-12-06 22:36:18,379 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:18,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 713 treesize of output 636 [2021-12-06 22:36:18,385 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:18,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 628 treesize of output 551 [2021-12-06 22:36:18,652 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_225| Int) (v_ArrVal_5399 (Array Int Int)) (v_arrayElimArr_312 (Array Int Int)) (v_arrayElimArr_311 (Array Int Int)) (v_ArrVal_5414 (Array Int Int)) (v_arrayElimArr_314 (Array Int Int)) (v_arrayElimArr_313 (Array Int Int))) (let ((.cse2 (select v_arrayElimArr_311 0))) (let ((.cse8 (store (store |c_#memory_$Pointer$.offset| .cse2 v_arrayElimArr_314) |v_ULTIMATE.start_main_~l~0#1.base_225| v_arrayElimArr_312)) (.cse9 (store (store |c_#memory_$Pointer$.base| .cse2 v_arrayElimArr_313) |v_ULTIMATE.start_main_~l~0#1.base_225| v_arrayElimArr_311)) (.cse6 (select v_arrayElimArr_312 0))) (let ((.cse10 (select (select .cse9 .cse2) .cse6)) (.cse11 (select (select .cse8 .cse2) .cse6))) (let ((.cse3 (store (store |c_#memory_int| .cse2 v_ArrVal_5399) |v_ULTIMATE.start_main_~l~0#1.base_225| v_ArrVal_5414)) (.cse4 (select (select .cse9 .cse10) .cse11)) (.cse5 (select (select .cse8 .cse10) .cse11))) (let ((.cse0 (select .cse3 (select (select .cse9 .cse4) .cse5))) (.cse1 (select (select .cse8 .cse4) .cse5)) (.cse7 (select .cse3 .cse2))) (or (not (= (select .cse0 (+ .cse1 8)) 2)) (not (= (select .cse0 (+ .cse1 4)) 0)) (not (= 0 (select (store |c_#valid| .cse2 1) |v_ULTIMATE.start_main_~l~0#1.base_225|))) (not (= (select (select .cse3 .cse4) (+ .cse5 4)) 1)) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_313 .cse6))) (not (= (select .cse7 (+ .cse6 4)) 0)) (= 2 (select .cse7 (+ 8 .cse6))) (not (= .cse6 0)) (not (= (select v_ArrVal_5414 4) 1)) (not (= (select |c_#valid| .cse2) 0)) (not (= (select v_arrayElimArr_314 .cse6) |c_ULTIMATE.start_main_~l~0#1.offset|))))))))) is different from false [2021-12-06 22:36:20,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:20,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 904 treesize of output 859 [2021-12-06 22:36:20,246 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:20,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 853 treesize of output 808 [2021-12-06 22:36:27,189 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:27,190 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1225 treesize of output 1031 [2021-12-06 22:36:27,203 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:36:27,203 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1021 treesize of output 827 [2021-12-06 22:36:27,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 407 treesize of output 289 [2021-12-06 22:36:27,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 424 treesize of output 366 [2021-12-06 22:36:27,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:36:27,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28373 treesize of output 27599 [2021-12-06 22:36:27,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,433 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 27710 treesize of output 26230 [2021-12-06 22:36:27,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:27,527 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26224 treesize of output 19382 [2021-12-06 22:36:28,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:36:28,194 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18797 treesize of output 13581 [2021-12-06 22:36:28,621 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2021-12-06 22:36:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 31 not checked. [2021-12-06 22:36:35,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804179217] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:36:35,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:36:35,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 61 [2021-12-06 22:36:35,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155837684] [2021-12-06 22:36:35,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:36:35,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-12-06 22:36:35,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-12-06 22:36:35,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3124, Unknown=8, NotChecked=230, Total=3660 [2021-12-06 22:36:35,287 INFO L87 Difference]: Start difference. First operand 163 states and 207 transitions. Second operand has 61 states, 61 states have (on average 3.1147540983606556) internal successors, (190), 61 states have internal predecessors, (190), 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) [2021-12-06 22:37:11,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:37:11,217 INFO L93 Difference]: Finished difference Result 616 states and 738 transitions. [2021-12-06 22:37:11,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 232 states. [2021-12-06 22:37:11,218 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.1147540983606556) internal successors, (190), 61 states have internal predecessors, (190), 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 71 [2021-12-06 22:37:11,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:37:11,220 INFO L225 Difference]: With dead ends: 616 [2021-12-06 22:37:11,220 INFO L226 Difference]: Without dead ends: 614 [2021-12-06 22:37:11,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 128 SyntacticMatches, 13 SemanticMatches, 273 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 27520 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=7006, Invalid=67249, Unknown=9, NotChecked=1086, Total=75350 [2021-12-06 22:37:11,223 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 798 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1045 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:37:11,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [798 Valid, 1447 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1545 Invalid, 0 Unknown, 1045 Unchecked, 1.9s Time] [2021-12-06 22:37:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-06 22:37:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 192. [2021-12-06 22:37:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.2722513089005236) internal successors, (243), 191 states have internal predecessors, (243), 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) [2021-12-06 22:37:11,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 243 transitions. [2021-12-06 22:37:11,269 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 243 transitions. Word has length 71 [2021-12-06 22:37:11,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:37:11,269 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 243 transitions. [2021-12-06 22:37:11,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.1147540983606556) internal successors, (190), 61 states have internal predecessors, (190), 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) [2021-12-06 22:37:11,270 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 243 transitions. [2021-12-06 22:37:11,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:37:11,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:37:11,270 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 22:37:11,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-06 22:37:11,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 22:37:11,471 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:37:11,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:37:11,472 INFO L85 PathProgramCache]: Analyzing trace with hash -995397659, now seen corresponding path program 12 times [2021-12-06 22:37:11,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:37:11,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431914211] [2021-12-06 22:37:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:37:11,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:37:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 19 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:37:12,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:37:12,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431914211] [2021-12-06 22:37:12,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431914211] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:37:12,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674623972] [2021-12-06 22:37:12,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 22:37:12,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:37:12,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:37:12,877 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:37:12,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bca76964-c618-4263-bd34-db0600017a7a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 22:37:14,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 22:37:14,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:37:14,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 156 conjunts are in the unsatisfiable core [2021-12-06 22:37:14,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:37:14,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 22:37:14,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 26 [2021-12-06 22:37:14,170 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 [2021-12-06 22:37:14,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 28 [2021-12-06 22:37:14,179 INFO L354 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2021-12-06 22:37:14,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2021-12-06 22:37:14,186 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 [2021-12-06 22:37:14,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:37:14,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:37:14,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 59 treesize of output 49 [2021-12-06 22:37:14,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2021-12-06 22:37:14,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 20 [2021-12-06 22:37:14,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,295 INFO L354 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2021-12-06 22:37:14,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 49 [2021-12-06 22:37:14,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2021-12-06 22:37:14,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:37:14,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:37:14,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,511 INFO L354 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2021-12-06 22:37:14,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 119 treesize of output 83 [2021-12-06 22:37:14,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,525 INFO L354 Elim1Store]: treesize reduction 54, result has 38.6 percent of original size [2021-12-06 22:37:14,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 73 [2021-12-06 22:37:14,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-12-06 22:37:14,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:37:14,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2021-12-06 22:37:14,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,771 INFO L354 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2021-12-06 22:37:14,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 199 treesize of output 117 [2021-12-06 22:37:14,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,780 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 52 treesize of output 60 [2021-12-06 22:37:14,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,790 INFO L354 Elim1Store]: treesize reduction 4, result has 83.3 percent of original size [2021-12-06 22:37:14,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 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 66 treesize of output 36 [2021-12-06 22:37:14,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:14,796 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 67 treesize of output 54 [2021-12-06 22:37:18,790 INFO L354 Elim1Store]: treesize reduction 190, result has 12.0 percent of original size [2021-12-06 22:37:18,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 14 new quantified variables, introduced 21 case distinctions, treesize of input 376 treesize of output 174 [2021-12-06 22:37:18,812 INFO L354 Elim1Store]: treesize reduction 79, result has 11.2 percent of original size [2021-12-06 22:37:18,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 9 case distinctions, treesize of input 79 treesize of output 53 [2021-12-06 22:37:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:37:19,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:37:20,093 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:20,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 339 treesize of output 300 [2021-12-06 22:37:20,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:20,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 294 treesize of output 255 [2021-12-06 22:37:20,162 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~l~0#1.base_234| Int) (v_ArrVal_5637 (Array Int Int)) (v_arrayElimArr_326 (Array Int Int)) (v_arrayElimArr_325 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~l~0#1.base_234| v_arrayElimArr_326)) (.cse8 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~l~0#1.base_234| v_arrayElimArr_325))) (let ((.cse3 (select (select .cse8 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|)) (.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~l~0#1.base|) |c_ULTIMATE.start_main_~l~0#1.offset|))) (let ((.cse2 (store |c_#memory_int| |v_ULTIMATE.start_main_~l~0#1.base_234| v_ArrVal_5637)) (.cse6 (select (select .cse8 .cse3) .cse4)) (.cse7 (select (select .cse5 .cse3) .cse4))) (let ((.cse0 (select .cse2 (select (select .cse8 .cse6) .cse7))) (.cse1 (select (select .cse5 .cse6) .cse7))) (or (not (= (select v_ArrVal_5637 4) 1)) (not (= 2 (select .cse0 (+ .cse1 8)))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~l~0#1.base_234|) 0)) (not (= |c_ULTIMATE.start_main_~l~0#1.offset| (select v_arrayElimArr_326 0))) (= (select (select .cse2 .cse3) (+ .cse4 4)) 0) (not (= |c_ULTIMATE.start_main_~l~0#1.base| (select v_arrayElimArr_325 0))) (not (= (select (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|) (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0)) (not (= (select .cse0 (+ .cse1 4)) 0)))))))) is different from false [2021-12-06 22:37:20,454 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:20,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 579 treesize of output 540 [2021-12-06 22:37:20,463 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:20,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 534 treesize of output 495 [2021-12-06 22:37:23,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:23,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 759 treesize of output 720 [2021-12-06 22:37:23,491 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:23,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 714 treesize of output 675 [2021-12-06 22:37:26,841 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:26,841 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 1059 treesize of output 889 [2021-12-06 22:37:26,854 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:37:26,854 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 879 treesize of output 709 [2021-12-06 22:37:26,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:26,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:26,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 330 [2021-12-06 22:37:26,884 INFO L354 Elim1Store]: treesize reduction 23, result has 14.8 percent of original size [2021-12-06 22:37:26,885 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 447 treesize of output 383 [2021-12-06 22:37:26,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 365 treesize of output 323 [2021-12-06 22:37:26,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 314 treesize of output 272 [2021-12-06 22:37:26,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:37:26,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:37:26,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 123 [2021-12-06 22:37:26,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-12-06 22:37:27,466 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5618 Int) (v_arrayElimCell_1127 Int) (v_arrayElimCell_1126 Int) (|v_ULTIMATE.start_main_~l~0#1.base_234| Int) (v_arrayElimCell_1124 Int) (|ULTIMATE.start_main_~ev1~0#1| Int) (v_ArrVal_5620 Int) (v_ArrVal_5637 (Array Int Int)) (v_ArrVal_5603 (Array Int Int)) (v_ArrVal_5614 (Array Int Int))) (let ((.cse3 (store |c_#valid| v_arrayElimCell_1124 1)) (.cse2 (store (let ((.cse4 (store (store |c_#memory_int| v_arrayElimCell_1124 v_ArrVal_5603) v_arrayElimCell_1126 v_ArrVal_5614))) (store .cse4 v_arrayElimCell_1127 (store (store (store (select .cse4 v_arrayElimCell_1127) 4 |ULTIMATE.start_main_~ev1~0#1|) 8 v_ArrVal_5620) 0 v_ArrVal_5618))) |v_ULTIMATE.start_main_~l~0#1.base_234| v_ArrVal_5637))) (let ((.cse1 (select .cse2 |c_ULTIMATE.start_main_~l~0#1.base|)) (.cse0 (store .cse3 v_arrayElimCell_1126 1))) (or (not (= (select v_ArrVal_5637 4) 1)) (not (= (select .cse0 v_arrayElimCell_1127) 0)) (not (= 2 (select .cse1 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 8)))) (not (= (select .cse1 (+ |c_ULTIMATE.start_main_~l~0#1.offset| 4)) 0)) (not (= (select (select .cse2 v_arrayElimCell_1127) 4) 0)) (= (select (select .cse2 v_arrayElimCell_1126) 4) 0) (not (= (select |c_#valid| v_arrayElimCell_1124) 0)) (not (= 0 (select .cse3 v_arrayElimCell_1126))) (not (= (select (store .cse0 v_arrayElimCell_1127 1) |v_ULTIMATE.start_main_~l~0#1.base_234|) 0)))))) is different from false [2021-12-06 22:37:30,790 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 23 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 31 not checked. [2021-12-06 22:37:30,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674623972] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:37:30,791 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:37:30,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 23] total 66 [2021-12-06 22:37:30,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135026898] [2021-12-06 22:37:30,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:37:30,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-06 22:37:30,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:37:30,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-06 22:37:30,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=3764, Unknown=10, NotChecked=250, Total=4290 [2021-12-06 22:37:30,792 INFO L87 Difference]: Start difference. First operand 192 states and 243 transitions. Second operand has 66 states, 66 states have (on average 2.9242424242424243) internal successors, (193), 66 states have internal predecessors, (193), 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)