./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/mbpr5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/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_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/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_ca157b90-a61f-4dcc-8587-ce893ea6c476/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 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:29:49,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:29:49,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:29:49,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:29:49,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:29:49,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:29:49,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:29:49,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:29:49,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:29:49,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:29:49,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:29:49,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:29:49,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:29:49,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:29:49,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:29:49,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:29:49,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:29:49,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:29:49,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:29:49,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:29:49,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:29:49,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:29:49,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:29:49,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:29:49,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:29:49,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:29:49,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:29:49,792 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:29:49,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:29:49,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:29:49,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:29:49,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:29:49,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:29:49,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:29:49,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:29:49,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:29:49,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:29:49,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:29:49,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:29:49,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:29:49,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:29:49,799 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:29:49,821 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:29:49,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:29:49,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:29:49,822 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:29:49,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:29:49,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:29:49,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:29:49,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:29:49,824 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:29:49,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:29:49,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:29:49,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:29:49,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:29:49,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:29:49,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:29:49,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:29:49,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:29:49,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:29:49,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:29:49,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:29:49,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:29:49,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:29:49,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:29:49,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:29:49,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:29:49,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:29:49,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:29:49,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:29:49,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:29:49,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:29:49,827 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:29:49,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:29:49,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:29:49,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:29:49,828 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_ca157b90-a61f-4dcc-8587-ce893ea6c476/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5503daab190ef8b57bdc3b49ed300bfd661cba05f76774439c2c92cf1668f08b [2021-12-07 00:29:50,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:29:50,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:29:50,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:29:50,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:29:50,041 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:29:50,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-tiling/mbpr5.c [2021-12-07 00:29:50,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/data/680b0b5bc/2d3b293e548c4e3889e745b7506d5ea5/FLAGd9d55c78b [2021-12-07 00:29:50,479 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:29:50,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/sv-benchmarks/c/array-tiling/mbpr5.c [2021-12-07 00:29:50,484 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/data/680b0b5bc/2d3b293e548c4e3889e745b7506d5ea5/FLAGd9d55c78b [2021-12-07 00:29:50,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/data/680b0b5bc/2d3b293e548c4e3889e745b7506d5ea5 [2021-12-07 00:29:50,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:29:50,496 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:29:50,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:29:50,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:29:50,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:29:50,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623113ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50, skipping insertion in model container [2021-12-07 00:29:50,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:29:50,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:29:50,630 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_ca157b90-a61f-4dcc-8587-ce893ea6c476/sv-benchmarks/c/array-tiling/mbpr5.c[396,409] [2021-12-07 00:29:50,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:29:50,664 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:29:50,672 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_ca157b90-a61f-4dcc-8587-ce893ea6c476/sv-benchmarks/c/array-tiling/mbpr5.c[396,409] [2021-12-07 00:29:50,691 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:29:50,701 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:29:50,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50 WrapperNode [2021-12-07 00:29:50,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:29:50,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:29:50,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:29:50,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:29:50,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,738 INFO L137 Inliner]: procedures = 15, calls = 64, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 173 [2021-12-07 00:29:50,739 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:29:50,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:29:50,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:29:50,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:29:50,746 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:29:50,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:29:50,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:29:50,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:29:50,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (1/1) ... [2021-12-07 00:29:50,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:29:50,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:50,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:29:50,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:29:50,830 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:29:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:29:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:29:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:29:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:29:50,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:29:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:29:50,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:29:50,885 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:29:50,886 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:29:51,078 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:29:51,083 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:29:51,083 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-07 00:29:51,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:29:51 BoogieIcfgContainer [2021-12-07 00:29:51,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:29:51,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:29:51,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:29:51,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:29:51,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:29:50" (1/3) ... [2021-12-07 00:29:51,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557a2546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:29:51, skipping insertion in model container [2021-12-07 00:29:51,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:29:50" (2/3) ... [2021-12-07 00:29:51,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557a2546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:29:51, skipping insertion in model container [2021-12-07 00:29:51,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:29:51" (3/3) ... [2021-12-07 00:29:51,090 INFO L111 eAbstractionObserver]: Analyzing ICFG mbpr5.c [2021-12-07 00:29:51,094 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:29:51,094 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:29:51,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:29:51,134 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:29:51,134 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:29:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 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) [2021-12-07 00:29:51,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-07 00:29:51,149 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:51,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:51,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:51,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1087925893, now seen corresponding path program 1 times [2021-12-07 00:29:51,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116381273] [2021-12-07 00:29:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:51,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:51,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:29:51,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:51,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116381273] [2021-12-07 00:29:51,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116381273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:51,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:51,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:29:51,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758749677] [2021-12-07 00:29:51,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:51,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:29:51,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:29:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 00:29:51,304 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 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) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-12-07 00:29:51,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:51,317 INFO L93 Difference]: Finished difference Result 83 states and 122 transitions. [2021-12-07 00:29:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:29:51,319 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2021-12-07 00:29:51,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:51,325 INFO L225 Difference]: With dead ends: 83 [2021-12-07 00:29:51,325 INFO L226 Difference]: Without dead ends: 39 [2021-12-07 00:29:51,327 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 [2021-12-07 00:29:51,330 INFO L933 BasicCegarLoop]: 57 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, 57 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:51,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-07 00:29:51,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-07 00:29:51,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 38 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:51,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2021-12-07 00:29:51,355 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 21 [2021-12-07 00:29:51,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:51,355 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2021-12-07 00:29:51,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-12-07 00:29:51,356 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2021-12-07 00:29:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-07 00:29:51,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:51,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:51,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:29:51,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:51,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash -30028973, now seen corresponding path program 1 times [2021-12-07 00:29:51,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:51,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276092698] [2021-12-07 00:29:51,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:51,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:29:51,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:51,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276092698] [2021-12-07 00:29:51,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276092698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:51,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:51,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:29:51,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394341930] [2021-12-07 00:29:51,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:51,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:29:51,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:51,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:29:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:29:51,436 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-12-07 00:29:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:51,466 INFO L93 Difference]: Finished difference Result 48 states and 60 transitions. [2021-12-07 00:29:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:51,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2021-12-07 00:29:51,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:51,468 INFO L225 Difference]: With dead ends: 48 [2021-12-07 00:29:51,468 INFO L226 Difference]: Without dead ends: 46 [2021-12-07 00:29:51,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:51,471 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 9 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:51,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 140 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-07 00:29:51,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-12-07 00:29:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.3) internal successors, (52), 40 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) [2021-12-07 00:29:51,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-12-07 00:29:51,478 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 21 [2021-12-07 00:29:51,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:51,479 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-12-07 00:29:51,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2021-12-07 00:29:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2021-12-07 00:29:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-07 00:29:51,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:51,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:51,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:29:51,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:51,482 INFO L85 PathProgramCache]: Analyzing trace with hash -29969391, now seen corresponding path program 1 times [2021-12-07 00:29:51,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:51,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3184668] [2021-12-07 00:29:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:51,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:51,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:29:51,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:51,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3184668] [2021-12-07 00:29:51,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3184668] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:51,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:51,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:29:51,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621646282] [2021-12-07 00:29:51,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:51,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:29:51,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:51,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:29:51,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:51,649 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-12-07 00:29:51,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:51,751 INFO L93 Difference]: Finished difference Result 92 states and 122 transitions. [2021-12-07 00:29:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:29:51,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2021-12-07 00:29:51,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:51,753 INFO L225 Difference]: With dead ends: 92 [2021-12-07 00:29:51,753 INFO L226 Difference]: Without dead ends: 61 [2021-12-07 00:29:51,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:29:51,755 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:51,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 25 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:29:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-07 00:29:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2021-12-07 00:29:51,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 45 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2021-12-07 00:29:51,764 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 21 [2021-12-07 00:29:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:51,765 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2021-12-07 00:29:51,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2021-12-07 00:29:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2021-12-07 00:29:51,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-07 00:29:51,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:51,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:51,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:29:51,767 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:51,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:51,768 INFO L85 PathProgramCache]: Analyzing trace with hash -175217928, now seen corresponding path program 1 times [2021-12-07 00:29:51,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:51,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337788933] [2021-12-07 00:29:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:51,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:51,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:29:51,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:51,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337788933] [2021-12-07 00:29:51,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337788933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:51,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:51,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:29:51,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372513533] [2021-12-07 00:29:51,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:51,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:29:51,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:51,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:29:51,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:51,886 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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) [2021-12-07 00:29:51,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:51,903 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-12-07 00:29:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:29:51,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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) Word has length 41 [2021-12-07 00:29:51,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:51,904 INFO L225 Difference]: With dead ends: 61 [2021-12-07 00:29:51,904 INFO L226 Difference]: Without dead ends: 46 [2021-12-07 00:29:51,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:29:51,906 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:51,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:29:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-07 00:29:51,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-12-07 00:29:51,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 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) [2021-12-07 00:29:51,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2021-12-07 00:29:51,918 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 41 [2021-12-07 00:29:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:51,918 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2021-12-07 00:29:51,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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) [2021-12-07 00:29:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2021-12-07 00:29:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-07 00:29:51,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:51,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:51,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:29:51,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:51,921 INFO L85 PathProgramCache]: Analyzing trace with hash -568244938, now seen corresponding path program 1 times [2021-12-07 00:29:51,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:51,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498167233] [2021-12-07 00:29:51,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:51,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:29:52,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:52,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498167233] [2021-12-07 00:29:52,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498167233] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:52,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453921673] [2021-12-07 00:29:52,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:52,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:52,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:52,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:29:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 103 conjunts are in the unsatisfiable core [2021-12-07 00:29:52,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:52,567 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 16 treesize of output 12 [2021-12-07 00:29:52,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-07 00:29:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,680 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 28 [2021-12-07 00:29:52,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-12-07 00:29:52,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 38 [2021-12-07 00:29:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,770 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 28 [2021-12-07 00:29:52,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-12-07 00:29:52,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 38 [2021-12-07 00:29:52,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,844 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 29 treesize of output 28 [2021-12-07 00:29:52,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 40 [2021-12-07 00:29:52,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 38 [2021-12-07 00:29:52,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,909 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 28 [2021-12-07 00:29:52,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2021-12-07 00:29:52,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:52,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2021-12-07 00:29:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:29:53,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:29:53,473 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 31 treesize of output 27 [2021-12-07 00:29:53,476 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 55 treesize of output 51 [2021-12-07 00:29:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:29:53,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453921673] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:29:53,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:29:53,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 23 [2021-12-07 00:29:53,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528251118] [2021-12-07 00:29:53,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:29:53,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-07 00:29:53,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:53,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-07 00:29:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:29:53,575 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 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) [2021-12-07 00:29:54,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:54,093 INFO L93 Difference]: Finished difference Result 126 states and 153 transitions. [2021-12-07 00:29:54,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:29:54,093 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 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 41 [2021-12-07 00:29:54,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:54,094 INFO L225 Difference]: With dead ends: 126 [2021-12-07 00:29:54,094 INFO L226 Difference]: Without dead ends: 87 [2021-12-07 00:29:54,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 71 SyntacticMatches, 13 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=332, Invalid=1074, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 00:29:54,096 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 285 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:54,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 110 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:29:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-12-07 00:29:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 48. [2021-12-07 00:29:54,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 47 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:54,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-12-07 00:29:54,101 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 41 [2021-12-07 00:29:54,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:54,101 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-12-07 00:29:54,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.0) internal successors, (115), 23 states have internal predecessors, (115), 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) [2021-12-07 00:29:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-12-07 00:29:54,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-07 00:29:54,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:54,102 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:54,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:29:54,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:54,303 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:54,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:54,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1692770569, now seen corresponding path program 1 times [2021-12-07 00:29:54,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:54,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224110751] [2021-12-07 00:29:54,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:54,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:29:54,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:54,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224110751] [2021-12-07 00:29:54,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224110751] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:54,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707568907] [2021-12-07 00:29:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:54,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:54,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:54,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:54,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:29:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:54,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-07 00:29:54,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:54,692 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 16 treesize of output 12 [2021-12-07 00:29:54,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-07 00:29:54,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,769 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 28 [2021-12-07 00:29:54,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2021-12-07 00:29:54,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2021-12-07 00:29:54,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,825 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 28 [2021-12-07 00:29:54,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2021-12-07 00:29:54,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 38 [2021-12-07 00:29:54,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,879 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 28 [2021-12-07 00:29:54,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2021-12-07 00:29:54,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:54,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 50 [2021-12-07 00:29:55,057 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:29:55,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:29:55,373 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 35 treesize of output 31 [2021-12-07 00:29:55,376 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 67 treesize of output 59 [2021-12-07 00:29:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:29:55,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707568907] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:29:55,489 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:29:55,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2021-12-07 00:29:55,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830172546] [2021-12-07 00:29:55,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:29:55,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 00:29:55,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:55,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 00:29:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:29:55,492 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-12-07 00:29:56,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:56,073 INFO L93 Difference]: Finished difference Result 119 states and 143 transitions. [2021-12-07 00:29:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-07 00:29:56,073 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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 [2021-12-07 00:29:56,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:56,074 INFO L225 Difference]: With dead ends: 119 [2021-12-07 00:29:56,074 INFO L226 Difference]: Without dead ends: 84 [2021-12-07 00:29:56,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 82 SyntacticMatches, 12 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=367, Invalid=1273, Unknown=0, NotChecked=0, Total=1640 [2021-12-07 00:29:56,076 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 340 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:56,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 120 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:29:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-12-07 00:29:56,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2021-12-07 00:29:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.169811320754717) internal successors, (62), 53 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 00:29:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2021-12-07 00:29:56,081 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 47 [2021-12-07 00:29:56,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:56,081 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2021-12-07 00:29:56,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 24 states have internal predecessors, (133), 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) [2021-12-07 00:29:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2021-12-07 00:29:56,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-07 00:29:56,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:56,082 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:56,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:29:56,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 00:29:56,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:56,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 964465308, now seen corresponding path program 2 times [2021-12-07 00:29:56,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:56,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045771938] [2021-12-07 00:29:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:56,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:29:56,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:56,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045771938] [2021-12-07 00:29:56,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045771938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:56,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297137051] [2021-12-07 00:29:56,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:29:56,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:56,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:56,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:29:56,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:29:56,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:29:56,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-07 00:29:56,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:56,717 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 16 treesize of output 12 [2021-12-07 00:29:56,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 47 [2021-12-07 00:29:56,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,779 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 28 [2021-12-07 00:29:56,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2021-12-07 00:29:56,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2021-12-07 00:29:56,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,836 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 28 [2021-12-07 00:29:56,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2021-12-07 00:29:56,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:56,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2021-12-07 00:29:56,960 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 [2021-12-07 00:29:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:29:56,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:29:57,177 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 17 treesize of output 15 [2021-12-07 00:29:57,180 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 34 treesize of output 30 [2021-12-07 00:29:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:29:57,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297137051] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:29:57,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:29:57,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2021-12-07 00:29:57,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435271412] [2021-12-07 00:29:57,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:29:57,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 00:29:57,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:57,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 00:29:57,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:29:57,225 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 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) [2021-12-07 00:29:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:57,642 INFO L93 Difference]: Finished difference Result 156 states and 184 transitions. [2021-12-07 00:29:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:29:57,642 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 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 53 [2021-12-07 00:29:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:57,644 INFO L225 Difference]: With dead ends: 156 [2021-12-07 00:29:57,645 INFO L226 Difference]: Without dead ends: 121 [2021-12-07 00:29:57,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 94 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2021-12-07 00:29:57,646 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 248 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:57,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [248 Valid, 139 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:29:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-07 00:29:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 60. [2021-12-07 00:29:57,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 59 states have internal predecessors, (67), 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) [2021-12-07 00:29:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 67 transitions. [2021-12-07 00:29:57,656 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 67 transitions. Word has length 53 [2021-12-07 00:29:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:57,656 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 67 transitions. [2021-12-07 00:29:57,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.7272727272727275) internal successors, (148), 22 states have internal predecessors, (148), 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) [2021-12-07 00:29:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 67 transitions. [2021-12-07 00:29:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-07 00:29:57,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:57,658 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:57,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:29:57,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-07 00:29:57,859 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:57,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:57,860 INFO L85 PathProgramCache]: Analyzing trace with hash -477181457, now seen corresponding path program 3 times [2021-12-07 00:29:57,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:57,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534438023] [2021-12-07 00:29:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:57,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:58,090 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:29:58,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534438023] [2021-12-07 00:29:58,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534438023] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:58,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525980528] [2021-12-07 00:29:58,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:29:58,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:58,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:58,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:29:58,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-07 00:29:58,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:29:58,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-07 00:29:58,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:58,455 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 16 treesize of output 12 [2021-12-07 00:29:58,497 INFO L354 Elim1Store]: treesize reduction 296, result has 10.6 percent of original size [2021-12-07 00:29:58,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 47 [2021-12-07 00:29:58,533 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-12-07 00:29:58,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-12-07 00:29:58,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 64 [2021-12-07 00:29:58,564 INFO L354 Elim1Store]: treesize reduction 189, result has 12.1 percent of original size [2021-12-07 00:29:58,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 439 treesize of output 408 [2021-12-07 00:29:58,696 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 19 treesize of output 7 [2021-12-07 00:29:58,711 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:29:58,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:29:58,880 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 17 treesize of output 15 [2021-12-07 00:29:58,881 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 34 treesize of output 30 [2021-12-07 00:29:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:29:58,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525980528] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:29:58,930 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:29:58,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-12-07 00:29:58,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474539630] [2021-12-07 00:29:58,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:29:58,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-07 00:29:58,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:58,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-07 00:29:58,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-12-07 00:29:58,931 INFO L87 Difference]: Start difference. First operand 60 states and 67 transitions. Second operand has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 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) [2021-12-07 00:29:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:59,345 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2021-12-07 00:29:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:29:59,345 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 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 59 [2021-12-07 00:29:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:59,346 INFO L225 Difference]: With dead ends: 146 [2021-12-07 00:29:59,346 INFO L226 Difference]: Without dead ends: 111 [2021-12-07 00:29:59,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 103 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1147, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 00:29:59,347 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 206 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:59,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 205 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:29:59,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-07 00:29:59,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 66. [2021-12-07 00:29:59,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 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) [2021-12-07 00:29:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2021-12-07 00:29:59,353 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 59 [2021-12-07 00:29:59,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:59,353 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2021-12-07 00:29:59,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.64) internal successors, (166), 25 states have internal predecessors, (166), 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) [2021-12-07 00:29:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2021-12-07 00:29:59,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-07 00:29:59,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:59,354 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:29:59,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:29:59,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:59,556 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:59,557 INFO L85 PathProgramCache]: Analyzing trace with hash -712968446, now seen corresponding path program 4 times [2021-12-07 00:29:59,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:59,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974749568] [2021-12-07 00:29:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:59,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:29:59,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:59,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974749568] [2021-12-07 00:29:59,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974749568] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:29:59,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805454589] [2021-12-07 00:29:59,700 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:29:59,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:29:59,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:29:59,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:29:59,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:29:59,789 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:29:59,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:29:59,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-07 00:29:59,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:29:59,820 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 16 treesize of output 12 [2021-12-07 00:29:59,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2021-12-07 00:29:59,887 INFO L354 Elim1Store]: treesize reduction 584, result has 8.3 percent of original size [2021-12-07 00:29:59,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 78 treesize of output 94 [2021-12-07 00:29:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:29:59,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2021-12-07 00:30:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:30:00,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:30:00,093 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 17 treesize of output 15 [2021-12-07 00:30:00,094 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 30 treesize of output 26 [2021-12-07 00:30:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:30:00,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805454589] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:30:00,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:30:00,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 17 [2021-12-07 00:30:00,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132709275] [2021-12-07 00:30:00,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:30:00,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-07 00:30:00,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:00,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-07 00:30:00,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:30:00,113 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 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) [2021-12-07 00:30:00,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:00,420 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2021-12-07 00:30:00,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-07 00:30:00,420 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 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 65 [2021-12-07 00:30:00,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:00,421 INFO L225 Difference]: With dead ends: 116 [2021-12-07 00:30:00,421 INFO L226 Difference]: Without dead ends: 114 [2021-12-07 00:30:00,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 122 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2021-12-07 00:30:00,422 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 136 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:00,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 178 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:30:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-12-07 00:30:00,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 72. [2021-12-07 00:30:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 71 states have internal predecessors, (79), 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) [2021-12-07 00:30:00,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2021-12-07 00:30:00,430 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 65 [2021-12-07 00:30:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:00,431 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2021-12-07 00:30:00,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 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) [2021-12-07 00:30:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2021-12-07 00:30:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-07 00:30:00,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:00,432 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:30:00,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:30:00,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-07 00:30:00,634 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:00,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1869859285, now seen corresponding path program 5 times [2021-12-07 00:30:00,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:00,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362910287] [2021-12-07 00:30:00,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:00,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:30:00,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362910287] [2021-12-07 00:30:00,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362910287] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:30:00,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834245428] [2021-12-07 00:30:00,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:30:00,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:00,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:30:00,858 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:30:00,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:30:05,934 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-07 00:30:05,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:30:05,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:30:05,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:30:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:30:06,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:30:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 80 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:30:06,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834245428] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:30:06,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:30:06,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 33 [2021-12-07 00:30:06,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887161152] [2021-12-07 00:30:06,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:30:06,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-07 00:30:06,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-07 00:30:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=782, Unknown=0, NotChecked=0, Total=1056 [2021-12-07 00:30:06,467 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 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) [2021-12-07 00:30:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:06,777 INFO L93 Difference]: Finished difference Result 222 states and 245 transitions. [2021-12-07 00:30:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:30:06,777 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 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 [2021-12-07 00:30:06,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:06,778 INFO L225 Difference]: With dead ends: 222 [2021-12-07 00:30:06,778 INFO L226 Difference]: Without dead ends: 107 [2021-12-07 00:30:06,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2021-12-07 00:30:06,779 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 440 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:06,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 246 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:30:06,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-12-07 00:30:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 92. [2021-12-07 00:30:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 91 states have internal predecessors, (99), 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) [2021-12-07 00:30:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-12-07 00:30:06,786 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 71 [2021-12-07 00:30:06,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:06,786 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-12-07 00:30:06,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.0606060606060606) internal successors, (200), 33 states have internal predecessors, (200), 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) [2021-12-07 00:30:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-12-07 00:30:06,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-07 00:30:06,787 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:06,787 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:30:06,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:30:06,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:30:06,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:06,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:06,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2130271302, now seen corresponding path program 6 times [2021-12-07 00:30:06,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:06,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073274156] [2021-12-07 00:30:06,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:06,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:07,246 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-07 00:30:07,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:07,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073274156] [2021-12-07 00:30:07,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073274156] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:30:07,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529434481] [2021-12-07 00:30:07,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:30:07,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:07,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:30:07,248 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:30:07,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:30:08,842 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-07 00:30:08,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:30:08,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-07 00:30:08,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:30:08,957 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 16 treesize of output 12 [2021-12-07 00:30:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:08,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2021-12-07 00:30:09,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,004 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 26 treesize of output 25 [2021-12-07 00:30:09,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:30:09,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:30:09,216 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 [2021-12-07 00:30:09,232 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 50 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-07 00:30:09,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:30:11,401 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_154| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_154| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_1738 Int)) (< (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#volArray~0#1.base|) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_154| 20) (- 4)) v_ArrVal_1738) (+ |c_ULTIMATE.start_main_~#volArray~0#1.offset| 16)) |c_ULTIMATE.start_main_~MINVAL~0#1|)))) is different from false [2021-12-07 00:30:11,473 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 57 treesize of output 55 [2021-12-07 00:30:11,478 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 55400 treesize of output 55272 [2021-12-07 00:32:46,961 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-07 00:32:46,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:32:46,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-12-07 00:32:46,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696289673] [2021-12-07 00:32:46,962 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 00:32:46,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:32:46,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:32:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:32:46,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=800, Unknown=1, NotChecked=58, Total=992 [2021-12-07 00:32:46,963 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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) [2021-12-07 00:32:47,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:47,173 INFO L93 Difference]: Finished difference Result 119 states and 129 transitions. [2021-12-07 00:32:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:32:47,173 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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 91 [2021-12-07 00:32:47,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:32:47,174 INFO L225 Difference]: With dead ends: 119 [2021-12-07 00:32:47,174 INFO L226 Difference]: Without dead ends: 109 [2021-12-07 00:32:47,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=166, Invalid=1027, Unknown=1, NotChecked=66, Total=1260 [2021-12-07 00:32:47,175 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 113 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:32:47,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 200 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:32:47,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-07 00:32:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2021-12-07 00:32:47,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0769230769230769) internal successors, (98), 91 states have internal predecessors, (98), 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) [2021-12-07 00:32:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2021-12-07 00:32:47,180 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 91 [2021-12-07 00:32:47,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:32:47,181 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2021-12-07 00:32:47,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 13 states have internal predecessors, (78), 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) [2021-12-07 00:32:47,181 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2021-12-07 00:32:47,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-07 00:32:47,181 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:32:47,181 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:32:47,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:32:47,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:32:47,383 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:32:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1771668984, now seen corresponding path program 7 times [2021-12-07 00:32:47,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:47,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37680931] [2021-12-07 00:32:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:47,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 97 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:32:47,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:32:47,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37680931] [2021-12-07 00:32:47,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37680931] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:32:47,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623665759] [2021-12-07 00:32:47,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:32:47,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:32:47,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:32:47,838 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:32:47,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:32:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:47,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-07 00:32:47,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:48,066 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 16 treesize of output 12 [2021-12-07 00:32:48,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,092 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:32:48,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 49 [2021-12-07 00:32:48,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,139 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 26 treesize of output 25 [2021-12-07 00:32:48,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,157 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:32:48,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:32:48,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,184 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 29 treesize of output 28 [2021-12-07 00:32:48,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:32:48,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:32:48,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,222 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 26 treesize of output 25 [2021-12-07 00:32:48,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:32:48,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:32:48,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,268 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 28 [2021-12-07 00:32:48,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:32:48,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:32:48,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,303 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 26 treesize of output 25 [2021-12-07 00:32:48,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:32:48,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:32:48,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,348 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 28 [2021-12-07 00:32:48,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:32:48,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:32:48,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-12-07 00:32:48,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:32:48,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,432 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 28 [2021-12-07 00:32:48,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:32:48,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:48,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:32:48,678 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 [2021-12-07 00:32:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:32:48,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:32:51,494 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 17 treesize of output 15 [2021-12-07 00:32:51,495 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 34 treesize of output 30 [2021-12-07 00:32:51,564 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 80 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-07 00:32:51,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623665759] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:32:51,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:32:51,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 14] total 37 [2021-12-07 00:32:51,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801049979] [2021-12-07 00:32:51,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:32:51,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-07 00:32:51,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:32:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-07 00:32:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2021-12-07 00:32:51,566 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 37 states, 37 states have (on average 6.675675675675675) internal successors, (247), 37 states have internal predecessors, (247), 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) [2021-12-07 00:32:53,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:53,707 INFO L93 Difference]: Finished difference Result 306 states and 339 transitions. [2021-12-07 00:32:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-07 00:32:53,707 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.675675675675675) internal successors, (247), 37 states have internal predecessors, (247), 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 91 [2021-12-07 00:32:53,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:32:53,709 INFO L225 Difference]: With dead ends: 306 [2021-12-07 00:32:53,709 INFO L226 Difference]: Without dead ends: 296 [2021-12-07 00:32:53,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 165 SyntacticMatches, 35 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2351 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=986, Invalid=6670, Unknown=0, NotChecked=0, Total=7656 [2021-12-07 00:32:53,711 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 955 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 2113 mSolverCounterSat, 824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 2113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:32:53,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [955 Valid, 459 Invalid, 3075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 2113 Invalid, 0 Unknown, 138 Unchecked, 0.9s Time] [2021-12-07 00:32:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-12-07 00:32:53,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 98. [2021-12-07 00:32:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0721649484536082) internal successors, (104), 97 states have internal predecessors, (104), 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) [2021-12-07 00:32:53,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2021-12-07 00:32:53,718 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 91 [2021-12-07 00:32:53,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:32:53,718 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2021-12-07 00:32:53,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.675675675675675) internal successors, (247), 37 states have internal predecessors, (247), 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) [2021-12-07 00:32:53,719 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2021-12-07 00:32:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-07 00:32:53,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:32:53,719 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:32:53,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:32:53,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:32:53,921 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:32:53,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash 463915083, now seen corresponding path program 8 times [2021-12-07 00:32:53,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:53,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330404858] [2021-12-07 00:32:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:53,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 131 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:32:54,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:32:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330404858] [2021-12-07 00:32:54,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330404858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:32:54,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562499565] [2021-12-07 00:32:54,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:32:54,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:32:54,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:32:54,920 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:32:54,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:32:55,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:32:55,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:32:55,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 152 conjunts are in the unsatisfiable core [2021-12-07 00:32:55,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:55,271 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 16 treesize of output 12 [2021-12-07 00:32:55,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:32:55,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 49 [2021-12-07 00:32:55,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,375 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 26 treesize of output 25 [2021-12-07 00:32:55,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,392 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:32:55,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:32:55,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,433 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 29 treesize of output 28 [2021-12-07 00:32:55,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:32:55,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:32:55,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,473 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 26 treesize of output 25 [2021-12-07 00:32:55,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:32:55,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:32:55,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,524 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 28 [2021-12-07 00:32:55,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:32:55,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:32:55,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,566 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 26 treesize of output 25 [2021-12-07 00:32:55,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:32:55,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,620 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 28 [2021-12-07 00:32:55,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 57 [2021-12-07 00:32:55,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:32:55,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 52 [2021-12-07 00:32:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 126 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:32:56,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:01,046 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 35 treesize of output 31 [2021-12-07 00:33:01,047 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 67 treesize of output 59 [2021-12-07 00:33:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-07 00:33:01,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562499565] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:01,267 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:01,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17, 17] total 53 [2021-12-07 00:33:01,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589819781] [2021-12-07 00:33:01,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:01,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-12-07 00:33:01,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:01,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-12-07 00:33:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2546, Unknown=0, NotChecked=0, Total=2756 [2021-12-07 00:33:01,269 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 53 states, 53 states have (on average 5.0754716981132075) internal successors, (269), 53 states have internal predecessors, (269), 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) [2021-12-07 00:33:13,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:13,101 INFO L93 Difference]: Finished difference Result 562 states and 625 transitions. [2021-12-07 00:33:13,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2021-12-07 00:33:13,102 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.0754716981132075) internal successors, (269), 53 states have internal predecessors, (269), 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 97 [2021-12-07 00:33:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:13,104 INFO L225 Difference]: With dead ends: 562 [2021-12-07 00:33:13,104 INFO L226 Difference]: Without dead ends: 515 [2021-12-07 00:33:13,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 205 SyntacticMatches, 18 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20302 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=5596, Invalid=50810, Unknown=0, NotChecked=0, Total=56406 [2021-12-07 00:33:13,115 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 2683 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4689 mSolverCounterSat, 2013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 6964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2013 IncrementalHoareTripleChecker+Valid, 4689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:13,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 531 Invalid, 6964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2013 Valid, 4689 Invalid, 0 Unknown, 262 Unchecked, 2.6s Time] [2021-12-07 00:33:13,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-12-07 00:33:13,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 182. [2021-12-07 00:33:13,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.1049723756906078) internal successors, (200), 181 states have internal predecessors, (200), 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) [2021-12-07 00:33:13,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 200 transitions. [2021-12-07 00:33:13,128 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 200 transitions. Word has length 97 [2021-12-07 00:33:13,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:13,128 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 200 transitions. [2021-12-07 00:33:13,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.0754716981132075) internal successors, (269), 53 states have internal predecessors, (269), 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) [2021-12-07 00:33:13,129 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 200 transitions. [2021-12-07 00:33:13,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 00:33:13,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:13,130 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:13,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:33:13,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:13,331 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:33:13,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:13,332 INFO L85 PathProgramCache]: Analyzing trace with hash -773865378, now seen corresponding path program 9 times [2021-12-07 00:33:13,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:13,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291701323] [2021-12-07 00:33:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:13,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:13,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 14 proven. 169 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:14,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:14,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291701323] [2021-12-07 00:33:14,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291701323] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:14,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296231486] [2021-12-07 00:33:14,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:33:14,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:14,306 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:14,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:33:18,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-12-07 00:33:18,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:18,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-07 00:33:18,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:19,046 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 16 treesize of output 12 [2021-12-07 00:33:19,119 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-07 00:33:19,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2021-12-07 00:33:19,217 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-07 00:33:19,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-07 00:33:19,279 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-07 00:33:19,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:33:19,335 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-07 00:33:19,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-07 00:33:19,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 81 [2021-12-07 00:33:19,448 INFO L354 Elim1Store]: treesize reduction 751, result has 9.0 percent of original size [2021-12-07 00:33:19,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 164 treesize of output 194 [2021-12-07 00:33:19,741 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-12-07 00:33:19,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-12-07 00:33:19,808 INFO L354 Elim1Store]: treesize reduction 734, result has 7.3 percent of original size [2021-12-07 00:33:19,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 76 [2021-12-07 00:33:19,916 INFO L354 Elim1Store]: treesize reduction 88, result has 20.0 percent of original size [2021-12-07 00:33:19,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 40 [2021-12-07 00:33:19,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 129 [2021-12-07 00:33:20,001 INFO L354 Elim1Store]: treesize reduction 905, result has 4.2 percent of original size [2021-12-07 00:33:20,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 17 case distinctions, treesize of input 419 treesize of output 394 [2021-12-07 00:33:20,673 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-07 00:33:20,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2021-12-07 00:33:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 15 proven. 163 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-07 00:33:20,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:22,581 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 35 treesize of output 33 [2021-12-07 00:33:22,585 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 21498 treesize of output 21370 [2021-12-07 00:33:22,925 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-07 00:33:22,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:33:22,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2021-12-07 00:33:22,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126244090] [2021-12-07 00:33:22,925 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:22,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-07 00:33:22,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:22,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-07 00:33:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=4219, Unknown=0, NotChecked=0, Total=4692 [2021-12-07 00:33:22,926 INFO L87 Difference]: Start difference. First operand 182 states and 200 transitions. Second operand has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 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) [2021-12-07 00:33:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:26,733 INFO L93 Difference]: Finished difference Result 389 states and 433 transitions. [2021-12-07 00:33:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-07 00:33:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 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 103 [2021-12-07 00:33:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:26,735 INFO L225 Difference]: With dead ends: 389 [2021-12-07 00:33:26,735 INFO L226 Difference]: Without dead ends: 365 [2021-12-07 00:33:26,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 137 SyntacticMatches, 8 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5130 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1909, Invalid=14603, Unknown=0, NotChecked=0, Total=16512 [2021-12-07 00:33:26,737 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 707 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 2936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:26,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 486 Invalid, 2936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:33:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-12-07 00:33:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 180. [2021-12-07 00:33:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.094972067039106) internal successors, (196), 179 states have internal predecessors, (196), 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) [2021-12-07 00:33:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2021-12-07 00:33:26,750 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 103 [2021-12-07 00:33:26,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:26,750 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2021-12-07 00:33:26,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 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) [2021-12-07 00:33:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2021-12-07 00:33:26,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:33:26,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:26,751 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:26,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-07 00:33:26,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:26,953 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:33:26,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:26,954 INFO L85 PathProgramCache]: Analyzing trace with hash -191553999, now seen corresponding path program 10 times [2021-12-07 00:33:26,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:26,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020160724] [2021-12-07 00:33:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:26,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 202 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:33:27,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020160724] [2021-12-07 00:33:27,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020160724] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852216373] [2021-12-07 00:33:27,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-07 00:33:27,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:27,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:27,609 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:27,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 00:33:27,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-07 00:33:27,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:33:27,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-07 00:33:27,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:28,037 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-07 00:33:28,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 49 [2021-12-07 00:33:28,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,137 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 26 treesize of output 25 [2021-12-07 00:33:28,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,154 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:33:28,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:33:28,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,189 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 28 [2021-12-07 00:33:28,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 63 [2021-12-07 00:33:28,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:33:28,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2021-12-07 00:33:28,660 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 [2021-12-07 00:33:28,671 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 196 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:33:28,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:33:33,416 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 17 treesize of output 15 [2021-12-07 00:33:33,417 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 34 treesize of output 30 [2021-12-07 00:33:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 16 proven. 194 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-07 00:33:33,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852216373] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:33:33,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:33:33,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 16, 17] total 52 [2021-12-07 00:33:33,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822030613] [2021-12-07 00:33:33,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:33:33,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-07 00:33:33,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:33,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-07 00:33:33,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=2464, Unknown=0, NotChecked=0, Total=2652 [2021-12-07 00:33:33,539 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 52 states, 52 states have (on average 5.423076923076923) internal successors, (282), 52 states have internal predecessors, (282), 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) [2021-12-07 00:33:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:33:42,133 INFO L93 Difference]: Finished difference Result 620 states and 667 transitions. [2021-12-07 00:33:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-12-07 00:33:42,133 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.423076923076923) internal successors, (282), 52 states have internal predecessors, (282), 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 109 [2021-12-07 00:33:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:33:42,136 INFO L225 Difference]: With dead ends: 620 [2021-12-07 00:33:42,136 INFO L226 Difference]: Without dead ends: 517 [2021-12-07 00:33:42,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 223 SyntacticMatches, 7 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10564 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=3459, Invalid=30951, Unknown=0, NotChecked=0, Total=34410 [2021-12-07 00:33:42,139 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1480 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 7083 mSolverCounterSat, 916 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 8252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 916 IncrementalHoareTripleChecker+Valid, 7083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:33:42,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 1815 Invalid, 8252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [916 Valid, 7083 Invalid, 0 Unknown, 253 Unchecked, 2.8s Time] [2021-12-07 00:33:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-12-07 00:33:42,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 192. [2021-12-07 00:33:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0732984293193717) internal successors, (205), 191 states have internal predecessors, (205), 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) [2021-12-07 00:33:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 205 transitions. [2021-12-07 00:33:42,155 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 205 transitions. Word has length 109 [2021-12-07 00:33:42,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:42,155 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 205 transitions. [2021-12-07 00:33:42,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.423076923076923) internal successors, (282), 52 states have internal predecessors, (282), 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) [2021-12-07 00:33:42,156 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 205 transitions. [2021-12-07 00:33:42,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-07 00:33:42,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:42,156 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:33:42,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 00:33:42,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-07 00:33:42,358 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:33:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1553741033, now seen corresponding path program 11 times [2021-12-07 00:33:42,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:42,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433334396] [2021-12-07 00:33:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:42,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 255 proven. 61 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:33:42,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433334396] [2021-12-07 00:33:42,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433334396] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:42,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578348602] [2021-12-07 00:33:42,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-07 00:33:42,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:42,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:42,779 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:42,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 00:34:33,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-07 00:34:33,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:34:33,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-07 00:34:33,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:33,644 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-12-07 00:34:33,703 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-07 00:34:33,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2021-12-07 00:34:34,091 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 19 treesize of output 7 [2021-12-07 00:34:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 74 proven. 240 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-07 00:34:34,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:34,423 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 17 treesize of output 15 [2021-12-07 00:34:34,425 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 34 treesize of output 30 [2021-12-07 00:34:34,552 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 74 proven. 240 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-07 00:34:34,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578348602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:34:34,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:34:34,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 48 [2021-12-07 00:34:34,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269447584] [2021-12-07 00:34:34,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:34,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-07 00:34:34,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:34,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-07 00:34:34,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2031, Unknown=0, NotChecked=0, Total=2256 [2021-12-07 00:34:34,554 INFO L87 Difference]: Start difference. First operand 192 states and 205 transitions. Second operand has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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) [2021-12-07 00:34:36,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:36,974 INFO L93 Difference]: Finished difference Result 434 states and 457 transitions. [2021-12-07 00:34:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-07 00:34:36,975 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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 121 [2021-12-07 00:34:36,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:36,976 INFO L225 Difference]: With dead ends: 434 [2021-12-07 00:34:36,976 INFO L226 Difference]: Without dead ends: 221 [2021-12-07 00:34:36,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1086, Invalid=8034, Unknown=0, NotChecked=0, Total=9120 [2021-12-07 00:34:36,978 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 1532 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 3200 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 3773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 3200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:36,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 1073 Invalid, 3773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 3200 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:34:36,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-07 00:34:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 142. [2021-12-07 00:34:36,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.049645390070922) internal successors, (148), 141 states have internal predecessors, (148), 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) [2021-12-07 00:34:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 148 transitions. [2021-12-07 00:34:36,988 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 148 transitions. Word has length 121 [2021-12-07 00:34:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:36,988 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 148 transitions. [2021-12-07 00:34:36,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 6.166666666666667) internal successors, (296), 48 states have internal predecessors, (296), 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) [2021-12-07 00:34:36,989 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 148 transitions. [2021-12-07 00:34:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-07 00:34:36,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:36,989 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:34:37,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 00:34:37,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 00:34:37,190 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1399382022, now seen corresponding path program 12 times [2021-12-07 00:34:37,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:37,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045089484] [2021-12-07 00:34:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:37,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 20 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:34:39,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:39,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045089484] [2021-12-07 00:34:39,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045089484] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:39,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295964208] [2021-12-07 00:34:39,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-07 00:34:39,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:39,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:39,008 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:39,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 00:34:53,691 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-12-07 00:34:53,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:34:53,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 239 conjunts are in the unsatisfiable core [2021-12-07 00:34:53,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:53,817 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 16 treesize of output 12 [2021-12-07 00:34:53,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 77 [2021-12-07 00:34:53,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 64 [2021-12-07 00:34:53,935 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-12-07 00:34:53,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 29 [2021-12-07 00:34:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:53,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 65 [2021-12-07 00:34:54,142 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-12-07 00:34:54,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2021-12-07 00:34:54,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:54,255 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-07 00:34:54,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 82 [2021-12-07 00:34:55,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,155 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-07 00:34:55,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2021-12-07 00:34:55,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 65 [2021-12-07 00:34:55,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,303 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-12-07 00:34:55,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 60 treesize of output 73 [2021-12-07 00:34:55,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,499 INFO L354 Elim1Store]: treesize reduction 106, result has 24.8 percent of original size [2021-12-07 00:34:55,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 64 [2021-12-07 00:34:55,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:55,721 INFO L354 Elim1Store]: treesize reduction 857, result has 9.4 percent of original size [2021-12-07 00:34:55,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 124 [2021-12-07 00:34:56,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,380 INFO L354 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2021-12-07 00:34:56,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 68 treesize of output 79 [2021-12-07 00:34:56,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:56,548 INFO L354 Elim1Store]: treesize reduction 111, result has 15.3 percent of original size [2021-12-07 00:34:56,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 18 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 106 treesize of output 114 [2021-12-07 00:34:57,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,190 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-07 00:34:57,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-12-07 00:34:57,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 99 [2021-12-07 00:34:57,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:34:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:34:57,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,258 INFO L354 Elim1Store]: treesize reduction 60, result has 16.7 percent of original size [2021-12-07 00:34:57,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 80 [2021-12-07 00:34:57,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,524 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-07 00:34:57,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2021-12-07 00:34:57,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,596 INFO L354 Elim1Store]: treesize reduction 47, result has 29.9 percent of original size [2021-12-07 00:34:57,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 79 treesize of output 104 [2021-12-07 00:34:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:57,972 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-07 00:34:57,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2021-12-07 00:34:58,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 105 [2021-12-07 00:34:58,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,082 INFO L354 Elim1Store]: treesize reduction 73, result has 14.1 percent of original size [2021-12-07 00:34:58,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 19 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 102 [2021-12-07 00:34:58,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,813 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-07 00:34:58,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2021-12-07 00:34:58,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 105 [2021-12-07 00:34:58,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:34:58,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:34:58,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:58,917 INFO L354 Elim1Store]: treesize reduction 60, result has 16.7 percent of original size [2021-12-07 00:34:58,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 86 [2021-12-07 00:34:59,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,272 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-12-07 00:34:59,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 66 [2021-12-07 00:34:59,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,363 INFO L354 Elim1Store]: treesize reduction 47, result has 29.9 percent of original size [2021-12-07 00:34:59,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 85 treesize of output 110 [2021-12-07 00:34:59,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,859 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:34:59,859 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 3 case distinctions, treesize of input 45 treesize of output 50 [2021-12-07 00:34:59,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:34:59,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:34:59,944 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:34:59,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 89 [2021-12-07 00:35:00,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,196 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-12-07 00:35:00,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 65 [2021-12-07 00:35:00,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,307 INFO L354 Elim1Store]: treesize reduction 4, result has 42.9 percent of original size [2021-12-07 00:35:00,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 104 [2021-12-07 00:35:00,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,544 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-12-07 00:35:00,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 53 [2021-12-07 00:35:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,591 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-12-07 00:35:00,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 15 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 72 treesize of output 89 [2021-12-07 00:35:00,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,850 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-12-07 00:35:00,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 53 [2021-12-07 00:35:00,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 92 [2021-12-07 00:35:00,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:00,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 62 [2021-12-07 00:35:02,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:35:02,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:35:02,468 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:35:02,468 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 22 [2021-12-07 00:35:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 22 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:35:02,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:14,187 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 99 treesize of output 95 [2021-12-07 00:35:14,221 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-07 00:35:14,223 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 4667917 treesize of output 4663805 [2021-12-07 00:35:31,648 WARN L227 SmtUtils]: Spent 17.42s on a formula simplification that was a NOOP. DAG size: 1457 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-07 00:36:48,687 WARN L227 SmtUtils]: Spent 1.00m on a formula simplification. DAG size of input: 1270 DAG size of output: 1270 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-07 00:36:48,844 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-07 00:36:48,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:36:48,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2021-12-07 00:36:48,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386858893] [2021-12-07 00:36:48,844 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-07 00:36:48,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-07 00:36:48,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:48,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-07 00:36:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1758, Invalid=13246, Unknown=2, NotChecked=0, Total=15006 [2021-12-07 00:36:48,847 INFO L87 Difference]: Start difference. First operand 142 states and 148 transitions. Second operand has 35 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 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) [2021-12-07 00:37:31,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:31,320 INFO L93 Difference]: Finished difference Result 1652 states and 1748 transitions. [2021-12-07 00:37:31,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 349 states. [2021-12-07 00:37:31,320 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 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 141 [2021-12-07 00:37:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:31,324 INFO L225 Difference]: With dead ends: 1652 [2021-12-07 00:37:31,324 INFO L226 Difference]: Without dead ends: 1008 [2021-12-07 00:37:31,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 187 SyntacticMatches, 31 SemanticMatches, 466 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82704 ImplicationChecksByTransitivity, 51.5s TimeCoverageRelationStatistics Valid=24200, Invalid=194354, Unknown=2, NotChecked=0, Total=218556 [2021-12-07 00:37:31,337 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 1515 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 9141 mSolverCounterSat, 1585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 10726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1585 IncrementalHoareTripleChecker+Valid, 9141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:31,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 1959 Invalid, 10726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1585 Valid, 9141 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-07 00:37:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-12-07 00:37:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 220. [2021-12-07 00:37:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0639269406392695) internal successors, (233), 219 states have internal predecessors, (233), 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) [2021-12-07 00:37:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 233 transitions. [2021-12-07 00:37:31,359 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 233 transitions. Word has length 141 [2021-12-07 00:37:31,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:31,359 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 233 transitions. [2021-12-07 00:37:31,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 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) [2021-12-07 00:37:31,359 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 233 transitions. [2021-12-07 00:37:31,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-07 00:37:31,360 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:31,360 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:31,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 00:37:31,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 00:37:31,562 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1448433869, now seen corresponding path program 13 times [2021-12-07 00:37:31,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:31,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686883745] [2021-12-07 00:37:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:31,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:32,636 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 24 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:37:32,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686883745] [2021-12-07 00:37:32,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686883745] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:32,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530248077] [2021-12-07 00:37:32,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-07 00:37:32,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:32,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:32,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:32,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 00:37:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:32,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 251 conjunts are in the unsatisfiable core [2021-12-07 00:37:32,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:33,107 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 16 treesize of output 12 [2021-12-07 00:37:33,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,148 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:37:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 49 [2021-12-07 00:37:33,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,223 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 26 treesize of output 25 [2021-12-07 00:37:33,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:37:33,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:37:33,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,282 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 26 treesize of output 25 [2021-12-07 00:37:33,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:37:33,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:37:33,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,360 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 28 [2021-12-07 00:37:33,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2021-12-07 00:37:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 43 [2021-12-07 00:37:33,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,400 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 26 treesize of output 25 [2021-12-07 00:37:33,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:37:33,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:37:33,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,439 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 26 treesize of output 25 [2021-12-07 00:37:33,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:37:33,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:37:33,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,496 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 28 [2021-12-07 00:37:33,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:37:33,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:37:33,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,534 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 26 treesize of output 25 [2021-12-07 00:37:33,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:37:33,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:37:33,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,567 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 26 treesize of output 25 [2021-12-07 00:37:33,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 74 [2021-12-07 00:37:33,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 61 [2021-12-07 00:37:33,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,634 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 28 [2021-12-07 00:37:33,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-07 00:37:33,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:37:33,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2021-12-07 00:37:34,287 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 [2021-12-07 00:37:34,296 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 22 proven. 412 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:37:34,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:37:35,895 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 17 treesize of output 15 [2021-12-07 00:37:35,897 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 34 treesize of output 30 [2021-12-07 00:37:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 22 proven. 367 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-07 00:37:36,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530248077] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:37:36,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:37:36,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 20, 20] total 70 [2021-12-07 00:37:36,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775379790] [2021-12-07 00:37:36,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:37:36,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-12-07 00:37:36,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:36,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-12-07 00:37:36,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=4544, Unknown=0, NotChecked=0, Total=4830 [2021-12-07 00:37:36,060 INFO L87 Difference]: Start difference. First operand 220 states and 233 transitions. Second operand has 70 states, 70 states have (on average 5.557142857142857) internal successors, (389), 70 states have internal predecessors, (389), 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) [2021-12-07 00:37:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:59,561 INFO L93 Difference]: Finished difference Result 1341 states and 1449 transitions. [2021-12-07 00:37:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 331 states. [2021-12-07 00:37:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 5.557142857142857) internal successors, (389), 70 states have internal predecessors, (389), 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 147 [2021-12-07 00:37:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:59,567 INFO L225 Difference]: With dead ends: 1341 [2021-12-07 00:37:59,567 INFO L226 Difference]: Without dead ends: 1222 [2021-12-07 00:37:59,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 262 SyntacticMatches, 23 SemanticMatches, 397 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57626 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=10859, Invalid=147943, Unknown=0, NotChecked=0, Total=158802 [2021-12-07 00:37:59,573 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 5281 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 12040 mSolverCounterSat, 5081 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5281 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 17121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5081 IncrementalHoareTripleChecker+Valid, 12040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:59,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5281 Valid, 1509 Invalid, 17121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5081 Valid, 12040 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-07 00:37:59,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-12-07 00:37:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 226. [2021-12-07 00:37:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 1.048888888888889) internal successors, (236), 225 states have internal predecessors, (236), 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) [2021-12-07 00:37:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 236 transitions. [2021-12-07 00:37:59,600 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 236 transitions. Word has length 147 [2021-12-07 00:37:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:59,600 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 236 transitions. [2021-12-07 00:37:59,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 5.557142857142857) internal successors, (389), 70 states have internal predecessors, (389), 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) [2021-12-07 00:37:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 236 transitions. [2021-12-07 00:37:59,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-07 00:37:59,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:59,601 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:37:59,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 00:37:59,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 00:37:59,803 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 810313568, now seen corresponding path program 14 times [2021-12-07 00:37:59,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:59,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543561224] [2021-12-07 00:37:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:59,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:01,440 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 24 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:38:01,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:01,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543561224] [2021-12-07 00:38:01,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543561224] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:01,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941054512] [2021-12-07 00:38:01,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:38:01,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:01,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:01,442 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:01,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 00:38:01,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:38:01,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:01,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 94 conjunts are in the unsatisfiable core [2021-12-07 00:38:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:01,938 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 16 treesize of output 12 [2021-12-07 00:38:01,992 INFO L354 Elim1Store]: treesize reduction 324, result has 10.2 percent of original size [2021-12-07 00:38:01,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 49 [2021-12-07 00:38:02,054 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-07 00:38:02,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-07 00:38:02,091 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-07 00:38:02,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:38:02,140 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-07 00:38:02,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-07 00:38:02,187 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-07 00:38:02,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:38:02,234 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-12-07 00:38:02,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-12-07 00:38:02,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-12-07 00:38:02,268 INFO L354 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2021-12-07 00:38:02,268 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 6 case distinctions, treesize of input 199 treesize of output 190 [2021-12-07 00:38:02,308 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-07 00:38:02,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-07 00:38:02,352 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-07 00:38:02,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:38:02,378 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-12-07 00:38:02,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-12-07 00:38:02,423 INFO L354 Elim1Store]: treesize reduction 480, result has 8.7 percent of original size [2021-12-07 00:38:02,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 50 treesize of output 61 [2021-12-07 00:38:02,468 INFO L354 Elim1Store]: treesize reduction 42, result has 22.2 percent of original size [2021-12-07 00:38:02,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 28 [2021-12-07 00:38:02,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-12-07 00:38:02,503 INFO L354 Elim1Store]: treesize reduction 193, result has 12.7 percent of original size [2021-12-07 00:38:02,503 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 6 case distinctions, treesize of input 107 treesize of output 106 [2021-12-07 00:38:03,145 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 19 treesize of output 7 [2021-12-07 00:38:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 24 proven. 465 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:38:03,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:08,932 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 17 treesize of output 15 [2021-12-07 00:38:08,934 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 34 treesize of output 30 [2021-12-07 00:38:09,121 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 24 proven. 461 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-07 00:38:09,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941054512] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:38:09,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:38:09,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 21, 24] total 74 [2021-12-07 00:38:09,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452222922] [2021-12-07 00:38:09,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:38:09,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-12-07 00:38:09,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-12-07 00:38:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=4994, Unknown=0, NotChecked=0, Total=5402 [2021-12-07 00:38:09,124 INFO L87 Difference]: Start difference. First operand 226 states and 236 transitions. Second operand has 74 states, 74 states have (on average 5.594594594594595) internal successors, (414), 74 states have internal predecessors, (414), 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) [2021-12-07 00:38:15,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:15,776 INFO L93 Difference]: Finished difference Result 501 states and 523 transitions. [2021-12-07 00:38:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-12-07 00:38:15,777 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 5.594594594594595) internal successors, (414), 74 states have internal predecessors, (414), 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 153 [2021-12-07 00:38:15,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:15,779 INFO L225 Difference]: With dead ends: 501 [2021-12-07 00:38:15,779 INFO L226 Difference]: Without dead ends: 491 [2021-12-07 00:38:15,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 278 SyntacticMatches, 43 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9779 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=2301, Invalid=24431, Unknown=0, NotChecked=0, Total=26732 [2021-12-07 00:38:15,781 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 1031 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 3817 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 4786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 3817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:15,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1229 Invalid, 4786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 3817 Invalid, 0 Unknown, 243 Unchecked, 1.6s Time] [2021-12-07 00:38:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-12-07 00:38:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 303. [2021-12-07 00:38:15,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.0364238410596027) internal successors, (313), 302 states have internal predecessors, (313), 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) [2021-12-07 00:38:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 313 transitions. [2021-12-07 00:38:15,824 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 313 transitions. Word has length 153 [2021-12-07 00:38:15,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:15,824 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 313 transitions. [2021-12-07 00:38:15,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 5.594594594594595) internal successors, (414), 74 states have internal predecessors, (414), 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) [2021-12-07 00:38:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 313 transitions. [2021-12-07 00:38:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-07 00:38:15,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:15,826 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:38:15,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-07 00:38:16,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:16,028 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:38:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:16,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1819605939, now seen corresponding path program 15 times [2021-12-07 00:38:16,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:16,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629246789] [2021-12-07 00:38:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:16,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 26 proven. 554 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:38:16,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629246789] [2021-12-07 00:38:16,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629246789] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:16,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356470364] [2021-12-07 00:38:16,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:38:16,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:16,884 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:16,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca157b90-a61f-4dcc-8587-ce893ea6c476/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 00:38:28,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2021-12-07 00:38:28,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:38:28,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 105 conjunts are in the unsatisfiable core [2021-12-07 00:38:28,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:29,509 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 16 treesize of output 12 [2021-12-07 00:38:29,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 64 [2021-12-07 00:38:29,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,765 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 28 [2021-12-07 00:38:29,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,794 INFO L354 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2021-12-07 00:38:29,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 72 [2021-12-07 00:38:29,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:29,998 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 35 treesize of output 34 [2021-12-07 00:38:30,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,122 INFO L354 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2021-12-07 00:38:30,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 93 [2021-12-07 00:38:30,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,420 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:38:30,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2021-12-07 00:38:30,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 125 [2021-12-07 00:38:30,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-07 00:38:30,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-07 00:38:30,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 67 [2021-12-07 00:38:31,997 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-07 00:38:31,997 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 3 case distinctions, treesize of input 29 treesize of output 13 [2021-12-07 00:38:32,004 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 46 proven. 531 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-07 00:38:32,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:38:40,447 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 185 treesize of output 181