./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array6_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array6_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:41:14,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:41:14,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:41:14,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:41:14,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:41:14,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:41:14,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:41:14,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:41:14,694 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:41:14,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:41:14,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:41:14,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:41:14,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:41:14,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:41:14,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:41:14,703 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:41:14,704 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:41:14,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:41:14,708 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:41:14,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:41:14,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:41:14,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:41:14,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:41:14,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:41:14,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:41:14,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:41:14,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:41:14,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:41:14,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:41:14,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:41:14,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:41:14,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:41:14,742 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:41:14,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:41:14,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:41:14,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:41:14,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:41:14,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:41:14,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:41:14,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:41:14,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:41:14,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 04:41:14,799 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:41:14,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:41:14,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:41:14,801 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:41:14,801 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:41:14,801 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:41:14,802 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:41:14,802 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:41:14,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:41:14,808 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:41:14,809 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:41:14,810 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:41:14,810 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:41:14,810 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:41:14,810 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:41:14,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:41:14,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 04:41:14,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:41:14,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 04:41:14,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:41:14,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:41:14,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:41:14,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:41:14,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 04:41:14,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 04:41:14,813 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:41:14,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:41:14,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:41:14,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:41:14,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:41:14,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:41:14,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:41:14,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:41:14,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:41:14,816 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:41:14,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:41:14,817 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:41:14,817 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:41:14,817 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:41:14,817 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2021-11-03 04:41:15,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:41:15,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:41:15,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:41:15,156 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:41:15,160 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:41:15,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/array-patterns/array6_pattern.c [2021-11-03 04:41:15,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/data/687dfd51f/202c608fa850448dbec32868ba0a5d06/FLAG3ddd9d974 [2021-11-03 04:41:15,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:41:15,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/sv-benchmarks/c/array-patterns/array6_pattern.c [2021-11-03 04:41:15,796 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/data/687dfd51f/202c608fa850448dbec32868ba0a5d06/FLAG3ddd9d974 [2021-11-03 04:41:16,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/data/687dfd51f/202c608fa850448dbec32868ba0a5d06 [2021-11-03 04:41:16,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:41:16,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:41:16,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:41:16,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:41:16,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:41:16,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@781df590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16, skipping insertion in model container [2021-11-03 04:41:16,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:41:16,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:41:16,364 WARN L228 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_cbc0908d-bc0a-42f4-8944-abe344438336/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2021-11-03 04:41:16,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:41:16,391 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:41:16,403 WARN L228 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_cbc0908d-bc0a-42f4-8944-abe344438336/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2021-11-03 04:41:16,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:41:16,427 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:41:16,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16 WrapperNode [2021-11-03 04:41:16,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:41:16,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:41:16,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:41:16,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:41:16,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:41:16,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:41:16,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:41:16,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:41:16,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:41:16,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:41:16,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:41:16,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:41:16,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (1/1) ... [2021-11-03 04:41:16,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:41:16,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:16,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:41:16,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:41:16,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 04:41:16,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:41:16,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:41:16,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:41:16,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:41:16,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:41:16,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:41:17,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:41:17,176 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-03 04:41:17,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:41:17 BoogieIcfgContainer [2021-11-03 04:41:17,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:41:17,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:41:17,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:41:17,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:41:17,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:41:16" (1/3) ... [2021-11-03 04:41:17,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc065b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:41:17, skipping insertion in model container [2021-11-03 04:41:17,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:41:16" (2/3) ... [2021-11-03 04:41:17,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc065b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:41:17, skipping insertion in model container [2021-11-03 04:41:17,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:41:17" (3/3) ... [2021-11-03 04:41:17,191 INFO L111 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2021-11-03 04:41:17,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:41:17,197 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:41:17,260 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:41:17,268 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:41:17,269 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:41:17,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:41:17,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:17,297 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:17,298 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:41:17,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:17,308 INFO L85 PathProgramCache]: Analyzing trace with hash -448716444, now seen corresponding path program 1 times [2021-11-03 04:41:17,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:41:17,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830053] [2021-11-03 04:41:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:17,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:41:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:17,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:41:17,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830053] [2021-11-03 04:41:17,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:17,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:17,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:41:17,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95876726] [2021-11-03 04:41:17,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:41:17,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:41:17,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:41:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:41:17,546 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:17,559 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2021-11-03 04:41:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:41:17,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-11-03 04:41:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:17,568 INFO L225 Difference]: With dead ends: 18 [2021-11-03 04:41:17,568 INFO L226 Difference]: Without dead ends: 9 [2021-11-03 04:41:17,571 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:41:17,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-03 04:41:17,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-03 04:41:17,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-03 04:41:17,600 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-11-03 04:41:17,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:17,600 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-03 04:41:17,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,601 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-03 04:41:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:41:17,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:17,602 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:17,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:41:17,603 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:41:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1060705347, now seen corresponding path program 1 times [2021-11-03 04:41:17,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:41:17,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633440899] [2021-11-03 04:41:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:17,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:41:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:17,767 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:41:17,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633440899] [2021-11-03 04:41:17,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633440899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:17,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:17,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:41:17,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948594088] [2021-11-03 04:41:17,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:41:17,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:41:17,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:41:17,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:41:17,770 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:17,790 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-03 04:41:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:41:17,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2021-11-03 04:41:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:17,791 INFO L225 Difference]: With dead ends: 13 [2021-11-03 04:41:17,791 INFO L226 Difference]: Without dead ends: 10 [2021-11-03 04:41:17,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:41:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-03 04:41:17,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-03 04:41:17,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2021-11-03 04:41:17,809 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 8 [2021-11-03 04:41:17,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:17,809 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2021-11-03 04:41:17,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,810 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2021-11-03 04:41:17,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:41:17,810 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:17,811 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:17,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:41:17,811 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:41:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:17,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1477509356, now seen corresponding path program 1 times [2021-11-03 04:41:17,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:41:17,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48825312] [2021-11-03 04:41:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:17,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:41:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:17,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:41:17,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48825312] [2021-11-03 04:41:17,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48825312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:41:17,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:41:17,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 04:41:17,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029727777] [2021-11-03 04:41:17,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 04:41:17,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:41:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 04:41:17,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:41:17,895 INFO L87 Difference]: Start difference. First operand 10 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:17,923 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-11-03 04:41:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:41:17,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2021-11-03 04:41:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:17,924 INFO L225 Difference]: With dead ends: 20 [2021-11-03 04:41:17,924 INFO L226 Difference]: Without dead ends: 11 [2021-11-03 04:41:17,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:41:17,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-03 04:41:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-03 04:41:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-03 04:41:17,928 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2021-11-03 04:41:17,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:17,928 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-03 04:41:17,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:17,928 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-03 04:41:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-03 04:41:17,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:17,929 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:17,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 04:41:17,929 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:41:17,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:17,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1777400204, now seen corresponding path program 1 times [2021-11-03 04:41:17,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:41:17,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282425359] [2021-11-03 04:41:17,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:17,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:41:17,946 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 04:41:17,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748089598] [2021-11-03 04:41:17,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:17,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:17,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:17,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:41:18,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:41:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:41:18,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:41:18,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:41:18,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:41:18,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:41:18,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282425359] [2021-11-03 04:41:18,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:41:18,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748089598] [2021-11-03 04:41:18,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748089598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:18,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [251461586] [2021-11-03 04:41:18,306 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:41:18,306 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:41:18,311 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:41:18,317 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:41:18,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:41:18,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,359 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:18,360 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,360 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:41:18,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:18,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:41:18,366 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:18,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-03 04:41:18,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-03 04:41:18,410 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1, |v_#length_22|], 55=[|v_#valid_34|]} [2021-11-03 04:41:18,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 20 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2021-11-03 04:41:18,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 04:41:18,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 04:41:18,493 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,508 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:18,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:18,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:18,510 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:18,582 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,596 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:18,596 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:18,597 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:18,598 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,612 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:18,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:18,614 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:18,615 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:18,628 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,759 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 04:41:18,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 58 [2021-11-03 04:41:18,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 04:41:18,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 04:41:18,775 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:18,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,819 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-03 04:41:18,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 04:41:18,827 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,828 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:925, output treesize:183 [2021-11-03 04:41:18,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,849 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:18,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:41:18,866 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-03 04:41:18,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:18,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:18,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-03 04:41:18,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:18,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:18,948 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:18,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:18,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-03 04:41:18,976 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:18,977 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:248, output treesize:224 [2021-11-03 04:41:18,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,166 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:19,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,184 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:19,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-03 04:41:19,190 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:19,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,191 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:41:19,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 529 [2021-11-03 04:41:19,206 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:19,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 468 [2021-11-03 04:41:19,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 572 [2021-11-03 04:41:19,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2021-11-03 04:41:19,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,347 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:41:19,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:41:19,351 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-03 04:41:19,391 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:19,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:19,397 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,567 INFO L180 QuantifierPusher]: treesize reduction 161, result has 76.4 percent of original size [2021-11-03 04:41:19,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 520 [2021-11-03 04:41:19,592 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 04:41:19,592 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:729, output treesize:520 [2021-11-03 04:41:19,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,720 INFO L180 QuantifierPusher]: treesize reduction 54, result has 70.5 percent of original size [2021-11-03 04:41:19,724 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:19,724 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,725 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 04:41:19,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-03 04:41:19,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,756 INFO L354 Elim1Store]: treesize reduction 21, result has 52.3 percent of original size [2021-11-03 04:41:19,757 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 1 case distinctions, treesize of input 58 treesize of output 40 [2021-11-03 04:41:19,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 04:41:19,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 04:41:19,765 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,770 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,772 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-03 04:41:19,775 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,775 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:134, output treesize:115 [2021-11-03 04:41:19,793 INFO L180 QuantifierPusher]: treesize reduction 55, result has 84.3 percent of original size [2021-11-03 04:41:19,799 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:19,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:41:19,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-11-03 04:41:19,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,822 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:19,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:19,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,827 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:19,827 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,838 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:19,839 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,842 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:19,842 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,843 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:19,843 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:19,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:19,887 INFO L354 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2021-11-03 04:41:19,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2021-11-03 04:41:19,890 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:41:19,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-03 04:41:19,894 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,909 INFO L180 QuantifierPusher]: treesize reduction 7, result has 95.7 percent of original size [2021-11-03 04:41:19,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-11-03 04:41:19,912 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:19,912 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:781, output treesize:156 [2021-11-03 04:41:19,922 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-03 04:41:19,926 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-03 04:41:19,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:19,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-03 04:41:19,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:19,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:20,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 437 [2021-11-03 04:41:20,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:20,118 INFO L180 QuantifierPusher]: treesize reduction 54, result has 66.7 percent of original size [2021-11-03 04:41:20,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 04:41:20,130 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:41:21,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:41:21,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:41:21,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-11-03 04:41:21,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592692665] [2021-11-03 04:41:21,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 04:41:21,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:41:21,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 04:41:21,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:41:21,590 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:21,645 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-03 04:41:21,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:41:21,646 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-03 04:41:21,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:21,647 INFO L225 Difference]: With dead ends: 31 [2021-11-03 04:41:21,647 INFO L226 Difference]: Without dead ends: 21 [2021-11-03 04:41:21,648 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:41:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-03 04:41:21,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 13. [2021-11-03 04:41:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-03 04:41:21,656 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2021-11-03 04:41:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:21,656 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-03 04:41:21,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-03 04:41:21,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-03 04:41:21,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:21,657 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:21,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:21,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-03 04:41:21,858 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:41:21,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash -832277132, now seen corresponding path program 2 times [2021-11-03 04:41:21,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:41:21,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748791176] [2021-11-03 04:41:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:21,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:41:21,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 04:41:21,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677147037] [2021-11-03 04:41:21,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-03 04:41:21,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:21,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:21,872 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:41:21,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:41:21,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-03 04:41:21,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:41:21,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 04:41:21,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:22,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:41:22,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:41:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-03 04:41:22,103 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:41:22,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748791176] [2021-11-03 04:41:22,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:41:22,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677147037] [2021-11-03 04:41:22,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677147037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:41:22,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1712957946] [2021-11-03 04:41:22,111 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-03 04:41:22,111 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:41:22,112 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:41:22,112 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:41:22,112 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:41:22,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,126 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-11-03 04:41:22,128 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-03 04:41:22,130 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-03 04:41:22,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 281 [2021-11-03 04:41:22,144 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_23|, v_prenex_2], 55=[|v_#valid_35|]} [2021-11-03 04:41:22,159 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:22,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,161 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:22,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,162 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:22,162 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,172 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:22,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:22,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,173 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:22,173 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,201 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 20 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 34 [2021-11-03 04:41:22,259 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 04:41:22,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,263 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-03 04:41:22,263 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,272 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:22,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,274 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:22,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:22,275 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,283 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,374 INFO L354 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2021-11-03 04:41:22,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 58 [2021-11-03 04:41:22,376 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,379 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 04:41:22,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,383 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-11-03 04:41:22,383 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,396 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-11-03 04:41:22,402 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 183 [2021-11-03 04:41:22,403 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,403 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:925, output treesize:183 [2021-11-03 04:41:22,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,417 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:41:22,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 250 [2021-11-03 04:41:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:22,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-03 04:41:22,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:22,449 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:22,450 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,460 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,464 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-03 04:41:22,470 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,470 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:248, output treesize:224 [2021-11-03 04:41:22,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,626 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,632 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,633 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,634 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-11-03 04:41:22,637 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 114 [2021-11-03 04:41:22,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 529 [2021-11-03 04:41:22,647 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,653 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 468 [2021-11-03 04:41:22,669 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 572 [2021-11-03 04:41:22,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:22,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-03 04:41:22,713 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:22,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,717 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 51 [2021-11-03 04:41:22,717 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:22,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 102 [2021-11-03 04:41:22,760 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,765 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:41:22,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 90 [2021-11-03 04:41:22,767 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,826 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,852 INFO L180 QuantifierPusher]: treesize reduction 161, result has 76.4 percent of original size [2021-11-03 04:41:22,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 520 [2021-11-03 04:41:22,862 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 04:41:22,862 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:729, output treesize:520 [2021-11-03 04:41:22,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,956 INFO L180 QuantifierPusher]: treesize reduction 54, result has 70.5 percent of original size [2021-11-03 04:41:22,960 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:22,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-03 04:41:22,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-03 04:41:22,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:22,989 INFO L354 Elim1Store]: treesize reduction 21, result has 52.3 percent of original size [2021-11-03 04:41:22,992 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 1 case distinctions, treesize of input 58 treesize of output 40 [2021-11-03 04:41:22,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,993 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 04:41:22,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:22,994 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 04:41:22,995 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:22,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:22,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,001 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,002 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-11-03 04:41:23,003 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:23,003 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:134, output treesize:115 [2021-11-03 04:41:23,014 INFO L180 QuantifierPusher]: treesize reduction 55, result has 84.3 percent of original size [2021-11-03 04:41:23,016 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:41:23,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 163 [2021-11-03 04:41:23,021 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-11-03 04:41:23,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,037 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:23,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:23,039 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,039 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:23,039 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:23,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:23,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,097 INFO L354 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2021-11-03 04:41:23,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2021-11-03 04:41:23,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,099 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:41:23,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-03 04:41:23,101 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:23,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:23,110 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:41:23,110 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:23,111 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:41:23,112 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:41:23,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,116 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,119 INFO L180 QuantifierPusher]: treesize reduction 9, result has 94.5 percent of original size [2021-11-03 04:41:23,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 156 [2021-11-03 04:41:23,122 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:41:23,122 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:781, output treesize:156 [2021-11-03 04:41:23,132 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-11-03 04:41:23,135 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 148 [2021-11-03 04:41:23,138 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-11-03 04:41:23,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:41:23,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 437 [2021-11-03 04:41:23,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:41:23,277 INFO L180 QuantifierPusher]: treesize reduction 54, result has 66.7 percent of original size [2021-11-03 04:41:23,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-11-03 04:41:23,294 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:41:24,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:41:24,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-03 04:41:24,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-03 04:41:24,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830069497] [2021-11-03 04:41:24,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 04:41:24,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:41:24,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 04:41:24,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-03 04:41:24,668 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:24,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:41:24,713 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-11-03 04:41:24,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:41:24,713 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-03 04:41:24,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:41:24,714 INFO L225 Difference]: With dead ends: 19 [2021-11-03 04:41:24,714 INFO L226 Difference]: Without dead ends: 16 [2021-11-03 04:41:24,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:41:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-03 04:41:24,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-11-03 04:41:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-03 04:41:24,717 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2021-11-03 04:41:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:41:24,717 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-03 04:41:24,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:41:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-03 04:41:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-03 04:41:24,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:41:24,718 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:41:24,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:41:24,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:24,928 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:41:24,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:41:24,929 INFO L85 PathProgramCache]: Analyzing trace with hash -966030956, now seen corresponding path program 3 times [2021-11-03 04:41:24,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:41:24,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724839249] [2021-11-03 04:41:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:41:24,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:41:24,939 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 04:41:24,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273085730] [2021-11-03 04:41:24,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-03 04:41:24,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:41:24,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:41:24,941 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:41:24,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbc0908d-bc0a-42f4-8944-abe344438336/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 04:41:25,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-03 04:41:25,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 04:41:25,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-03 04:41:25,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:41:25,120 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 75 treesize of output 71 [2021-11-03 04:41:25,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:25,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 35 [2021-11-03 04:41:25,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2021-11-03 04:41:25,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:25,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:25,368 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 04:41:25,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 68 treesize of output 65 [2021-11-03 04:41:25,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:25,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:25,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:26,713 INFO L354 Elim1Store]: treesize reduction 4494, result has 5.2 percent of original size [2021-11-03 04:41:26,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 89 case distinctions, treesize of input 589 treesize of output 451 [2021-11-03 04:41:26,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:26,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 275 treesize of output 183 [2021-11-03 04:41:26,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:26,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 210 treesize of output 147 [2021-11-03 04:41:26,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:26,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:41:27,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:27,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:41:27,006 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-03 04:41:27,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 210 treesize of output 95 [2021-11-03 04:41:27,632 INFO L354 Elim1Store]: treesize reduction 422, result has 3.9 percent of original size [2021-11-03 04:41:27,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 3 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 122 treesize of output 54 [2021-11-03 04:41:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:41:27,678 INFO L328 TraceCheckSpWp]: Computing backward predicates...