./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V --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 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:46:52,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:46:52,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:46:52,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:46:52,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:46:52,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:46:52,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:46:52,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:46:52,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:46:52,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:46:52,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:46:52,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:46:52,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:46:52,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:46:52,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:46:52,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:46:52,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:46:52,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:46:52,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:46:52,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:46:52,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:46:52,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:46:52,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:46:52,818 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:46:52,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:46:52,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:46:52,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:46:52,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:46:52,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:46:52,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:46:52,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:46:52,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:46:52,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:46:52,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:46:52,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:46:52,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:46:52,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:46:52,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:46:52,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:46:52,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:46:52,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:46:52,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:46:52,877 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:46:52,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:46:52,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:46:52,878 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:46:52,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:46:52,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:46:52,885 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:46:52,885 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:46:52,886 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:46:52,886 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:46:52,887 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:46:52,888 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:46:52,888 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:46:52,888 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:46:52,888 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:46:52,888 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:46:52,889 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:46:52,889 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:46:52,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:46:52,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:46:52,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:46:52,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:46:52,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:46:52,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:46:52,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:46:52,895 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:46:52,897 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:46:52,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:46:52,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:46:52,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:46:52,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:46:52,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:46:52,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:46:52,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:46:52,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:46:52,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:46:52,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:46:52,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:46:52,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:46:52,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:46:52,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:46:52,900 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_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5446997f7b2d7b76d63a39784df785fb06bbab562e365ba547eeee8a855e283e [2021-11-23 03:46:53,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:46:53,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:46:53,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:46:53,172 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:46:53,173 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:46:53,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2021-11-23 03:46:53,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/data/bac5d44a0/d329052f7c604f24bfc2e07a949128c6/FLAGcfb529dba [2021-11-23 03:46:53,694 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:46:53,694 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c [2021-11-23 03:46:53,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/data/bac5d44a0/d329052f7c604f24bfc2e07a949128c6/FLAGcfb529dba [2021-11-23 03:46:54,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/data/bac5d44a0/d329052f7c604f24bfc2e07a949128c6 [2021-11-23 03:46:54,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:46:54,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:46:54,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:46:54,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:46:54,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:46:54,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e52257e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54, skipping insertion in model container [2021-11-23 03:46:54,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:46:54,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:46:54,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2021-11-23 03:46:54,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:46:54,304 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:46:54,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/sv-benchmarks/c/array-cav19/array_tiling_tcpy.c[408,421] [2021-11-23 03:46:54,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:46:54,337 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:46:54,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54 WrapperNode [2021-11-23 03:46:54,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:46:54,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:46:54,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:46:54,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:46:54,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,370 INFO L137 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 60 [2021-11-23 03:46:54,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:46:54,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:46:54,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:46:54,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:46:54,380 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,388 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:46:54,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:46:54,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:46:54,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:46:54,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (1/1) ... [2021-11-23 03:46:54,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:46:54,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:46:54,433 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:46:54,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:46:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:46:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:46:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:46:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:46:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:46:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:46:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:46:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:46:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:46:54,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:46:54,566 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:46:54,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:46:54,751 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:46:54,778 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:46:54,789 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:46:54,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:54 BoogieIcfgContainer [2021-11-23 03:46:54,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:46:54,807 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:46:54,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:46:54,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:46:54,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:46:54" (1/3) ... [2021-11-23 03:46:54,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46571fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:54, skipping insertion in model container [2021-11-23 03:46:54,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:46:54" (2/3) ... [2021-11-23 03:46:54,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46571fb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:46:54, skipping insertion in model container [2021-11-23 03:46:54,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:46:54" (3/3) ... [2021-11-23 03:46:54,814 INFO L111 eAbstractionObserver]: Analyzing ICFG array_tiling_tcpy.c [2021-11-23 03:46:54,819 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:46:54,829 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:46:54,875 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:46:54,883 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 [2021-11-23 03:46:54,883 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:46:54,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:46:54,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:46:54,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:54,914 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:54,915 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:54,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1517292925, now seen corresponding path program 1 times [2021-11-23 03:46:54,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:54,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677056461] [2021-11-23 03:46:54,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:54,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:46:55,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677056461] [2021-11-23 03:46:55,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677056461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:46:55,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:46:55,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:46:55,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028014401] [2021-11-23 03:46:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:46:55,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:46:55,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:46:55,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:46:55,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:46:55,166 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:46:55,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:46:55,217 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2021-11-23 03:46:55,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:46:55,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 12 [2021-11-23 03:46:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:46:55,232 INFO L225 Difference]: With dead ends: 27 [2021-11-23 03:46:55,233 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 03:46:55,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:46:55,240 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 7 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:46:55,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 18 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:46:55,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 03:46:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 13. [2021-11-23 03:46:55,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:46:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-23 03:46:55,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 12 [2021-11-23 03:46:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:46:55,277 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-23 03:46:55,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:46:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-23 03:46:55,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:46:55,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:46:55,279 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:46:55,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:46:55,279 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:46:55,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:46:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash -213805710, now seen corresponding path program 1 times [2021-11-23 03:46:55,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:46:55,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029662591] [2021-11-23 03:46:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:55,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:46:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:46:55,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:46:55,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029662591] [2021-11-23 03:46:55,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029662591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:46:55,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221734709] [2021-11-23 03:46:55,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:46:55,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:46:55,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:46:55,420 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:46:55,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:46:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:46:55,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:46:55,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:46:55,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:46:55,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:46:55,719 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-11-23 03:46:55,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2021-11-23 03:46:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:46:55,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:46:56,044 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:46:56,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 662 treesize of output 606 [2021-11-23 03:47:03,045 INFO L354 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2021-11-23 03:47:03,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 365 treesize of output 261 [2021-11-23 03:47:03,070 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 493 treesize of output 483 [2021-11-23 03:47:03,752 INFO L354 Elim1Store]: treesize reduction 33, result has 61.2 percent of original size [2021-11-23 03:47:03,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 621 treesize of output 520 [2021-11-23 03:47:04,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:04,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221734709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:47:04,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [584603594] [2021-11-23 03:47:04,613 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 03:47:04,613 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:47:04,617 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:47:04,622 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:47:04,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:47:04,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,854 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:47:04,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:47:04,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-11-23 03:47:04,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:04,921 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 61 treesize of output 73 [2021-11-23 03:47:05,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:05,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:05,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:05,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:05,104 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-23 03:47:05,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 360 treesize of output 376 [2021-11-23 03:47:05,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:05,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:05,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:05,209 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:47:05,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:47:05,262 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:47:05,294 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:47:05,940 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '160#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem10#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| (* 2 |ULTIMATE.start_main_~S~0#1|)) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#acopy~0#1.base|) (+ |ULTIMATE.start_main_~#acopy~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem10#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:47:05,940 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:47:05,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:47:05,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-23 03:47:05,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66639971] [2021-11-23 03:47:05,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:47:05,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:47:05,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:47:05,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:47:05,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:47:05,943 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:47:06,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:06,056 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-11-23 03:47:06,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:47:06,057 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 13 [2021-11-23 03:47:06,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:06,058 INFO L225 Difference]: With dead ends: 24 [2021-11-23 03:47:06,058 INFO L226 Difference]: Without dead ends: 19 [2021-11-23 03:47:06,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:47:06,061 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:06,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 34 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 1 Unchecked, 0.1s Time] [2021-11-23 03:47:06,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-23 03:47:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2021-11-23 03:47:06,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:47:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-23 03:47:06,066 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 13 [2021-11-23 03:47:06,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:06,067 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-23 03:47:06,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:47:06,067 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-23 03:47:06,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:47:06,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:06,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:06,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:06,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:06,290 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:47:06,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:06,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1956711453, now seen corresponding path program 2 times [2021-11-23 03:47:06,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:47:06,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23918639] [2021-11-23 03:47:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:06,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:47:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:06,517 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:47:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23918639] [2021-11-23 03:47:06,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23918639] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118773458] [2021-11-23 03:47:06,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:47:06,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:06,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:47:06,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:47:06,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:47:06,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-23 03:47:06,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:47:06,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 03:47:06,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:06,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:47:06,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:06,656 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-11-23 03:47:06,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2021-11-23 03:47:06,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:06,741 INFO L354 Elim1Store]: treesize reduction 319, result has 9.9 percent of original size [2021-11-23 03:47:06,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 103 [2021-11-23 03:47:06,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:06,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:07,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:47:07,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1732118 treesize of output 1584670 [2021-11-23 03:47:09,169 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:47:09,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178170300] [2021-11-23 03:47:09,172 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2021-11-23 03:47:09,172 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:47:09,173 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:47:09,173 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:47:09,173 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:47:09,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,325 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:47:09,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:47:09,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,401 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:47:09,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:47:09,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,451 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 61 treesize of output 73 [2021-11-23 03:47:09,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:09,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:09,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:09,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:09,650 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-23 03:47:09,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 360 treesize of output 376 [2021-11-23 03:47:09,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:09,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:09,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:09,741 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:47:09,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:47:09,782 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:47:09,805 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:47:10,338 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '297#(and (= |ULTIMATE.start_main_~i~0#1| 0) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (= (ite (= |ULTIMATE.start_main_#t~mem9#1| |ULTIMATE.start_main_#t~mem10#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| (* 2 |ULTIMATE.start_main_~S~0#1|)) (= |ULTIMATE.start_main_#t~mem9#1| (select (select |#memory_int| |ULTIMATE.start_main_~#acopy~0#1.base|) (+ |ULTIMATE.start_main_~#acopy~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4)))) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ |ULTIMATE.start_main_~#a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) |ULTIMATE.start_main_#t~mem10#1|) (= |#NULL.base| 0))' at error location [2021-11-23 03:47:10,338 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:47:10,338 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:47:10,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-23 03:47:10,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945332985] [2021-11-23 03:47:10,338 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:47:10,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:47:10,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:47:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:47:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-11-23 03:47:10,340 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:47:10,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:10,401 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-23 03:47:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:47:10,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-23 03:47:10,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:10,404 INFO L225 Difference]: With dead ends: 19 [2021-11-23 03:47:10,404 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 03:47:10,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=495, Unknown=0, NotChecked=0, Total=600 [2021-11-23 03:47:10,406 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:10,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:47:10,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 03:47:10,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-23 03:47:10,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:47:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-23 03:47:10,412 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 14 [2021-11-23 03:47:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:10,412 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-23 03:47:10,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:47:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-23 03:47:10,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:47:10,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:10,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:10,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 03:47:10,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:10,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:47:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1100203882, now seen corresponding path program 1 times [2021-11-23 03:47:10,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:47:10,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163044424] [2021-11-23 03:47:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:10,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:47:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:47:10,968 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:47:10,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163044424] [2021-11-23 03:47:10,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163044424] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:10,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330750573] [2021-11-23 03:47:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:10,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:47:10,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:47:10,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:47:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:11,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:47:11,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:11,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:47:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:11,064 INFO L354 Elim1Store]: treesize reduction 51, result has 19.0 percent of original size [2021-11-23 03:47:11,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 43 [2021-11-23 03:47:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:11,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:11,340 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:47:11,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1514 treesize of output 1394 [2021-11-23 03:47:47,607 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-11-23 03:47:47,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 305 treesize of output 244 [2021-11-23 03:47:47,934 INFO L354 Elim1Store]: treesize reduction 38, result has 28.3 percent of original size [2021-11-23 03:47:47,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 40 [2021-11-23 03:47:47,942 INFO L354 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2021-11-23 03:47:47,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 128 treesize of output 1 [2021-11-23 03:47:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330750573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:47:47,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1462366447] [2021-11-23 03:47:47,991 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:47:47,991 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:47:47,992 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:47:47,992 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:47:47,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:47:48,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,137 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:47:48,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:47:48,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,223 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:47:48,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:47:48,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,254 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 47 treesize of output 59 [2021-11-23 03:47:48,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:48,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:48,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:48,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:48,453 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-23 03:47:48,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 347 treesize of output 375 [2021-11-23 03:47:48,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:48,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:48,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:48,628 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:47:48,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:47:48,819 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:47:48,844 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:47:49,621 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '477#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:47:49,622 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:47:49,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:47:49,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2021-11-23 03:47:49,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076546151] [2021-11-23 03:47:49,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:47:49,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 03:47:49,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:47:49,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 03:47:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:47:49,625 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:47:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:49,840 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-23 03:47:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:47:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-11-23 03:47:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:49,841 INFO L225 Difference]: With dead ends: 25 [2021-11-23 03:47:49,842 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 03:47:49,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 03:47:49,843 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:49,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 64 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 5 Unchecked, 0.1s Time] [2021-11-23 03:47:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 03:47:49,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-11-23 03:47:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:47:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-23 03:47:49,850 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2021-11-23 03:47:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:49,850 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-23 03:47:49,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:47:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-23 03:47:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 03:47:49,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:49,851 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:49,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:50,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:50,055 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:47:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:50,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2085490539, now seen corresponding path program 2 times [2021-11-23 03:47:50,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:47:50,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070277188] [2021-11-23 03:47:50,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:50,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:47:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:50,284 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:50,284 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:47:50,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070277188] [2021-11-23 03:47:50,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070277188] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:50,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766671939] [2021-11-23 03:47:50,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:47:50,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:47:50,286 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:47:50,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:47:50,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 03:47:50,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:47:50,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 03:47:50,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:50,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:47:50,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:50,392 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-23 03:47:50,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 64 [2021-11-23 03:47:50,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:50,478 INFO L354 Elim1Store]: treesize reduction 396, result has 9.6 percent of original size [2021-11-23 03:47:50,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 125 [2021-11-23 03:47:51,003 INFO L354 Elim1Store]: treesize reduction 722, result has 1.0 percent of original size [2021-11-23 03:47:51,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 134 treesize of output 56 [2021-11-23 03:47:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:51,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:51,282 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:47:51,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3480814 treesize of output 3169782 [2021-11-23 03:47:54,943 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:47:54,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1654548162] [2021-11-23 03:47:54,947 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:47:54,947 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:47:54,947 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:47:54,948 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:47:54,948 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:47:55,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,103 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:47:55,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:47:55,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 39 [2021-11-23 03:47:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,163 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 47 treesize of output 59 [2021-11-23 03:47:55,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:55,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:55,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:55,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:55,370 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-23 03:47:55,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 347 treesize of output 375 [2021-11-23 03:47:55,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:55,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:55,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:55,492 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:47:55,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:47:55,646 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:47:55,672 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:47:56,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '658#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:47:56,342 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:47:56,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:47:56,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-23 03:47:56,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684806357] [2021-11-23 03:47:56,342 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:47:56,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:47:56,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:47:56,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:47:56,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:47:56,344 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:47:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:47:56,466 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-11-23 03:47:56,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:47:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-23 03:47:56,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:47:56,468 INFO L225 Difference]: With dead ends: 28 [2021-11-23 03:47:56,468 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 03:47:56,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-11-23 03:47:56,470 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:47:56,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 44 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:47:56,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 03:47:56,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2021-11-23 03:47:56,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:47:56,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-23 03:47:56,475 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 18 [2021-11-23 03:47:56,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:47:56,475 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-23 03:47:56,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:47:56,476 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-23 03:47:56,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:47:56,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:47:56,477 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:47:56,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:47:56,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:56,687 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:47:56,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:47:56,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1283861757, now seen corresponding path program 3 times [2021-11-23 03:47:56,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:47:56,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597686220] [2021-11-23 03:47:56,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:47:56,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:47:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:47:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:56,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:47:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597686220] [2021-11-23 03:47:56,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597686220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:47:56,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548697163] [2021-11-23 03:47:56,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:47:56,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:47:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:47:56,924 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:47:56,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:47:56,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:47:56,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:47:56,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-23 03:47:56,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:47:56,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:47:57,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:47:57,012 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-23 03:47:57,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 67 [2021-11-23 03:47:57,439 INFO L354 Elim1Store]: treesize reduction 210, result has 3.2 percent of original size [2021-11-23 03:47:57,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 50 [2021-11-23 03:47:57,458 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:47:57,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:47:57,595 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:47:57,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 742 treesize of output 686 [2021-11-23 03:47:57,638 INFO L354 Elim1Store]: treesize reduction 38, result has 28.3 percent of original size [2021-11-23 03:47:57,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 298 treesize of output 216 [2021-11-23 03:47:57,644 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 435 treesize of output 419 [2021-11-23 03:47:57,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:57,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:57,774 INFO L354 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2021-11-23 03:47:57,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 465 treesize of output 365 [2021-11-23 03:47:58,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,015 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 1 [2021-11-23 03:47:58,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,039 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:47:58,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,070 INFO L354 Elim1Store]: treesize reduction 52, result has 32.5 percent of original size [2021-11-23 03:47:58,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 413 [2021-11-23 03:47:58,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,178 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 193 treesize of output 1 [2021-11-23 03:47:58,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,211 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:58,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 501 treesize of output 1 [2021-11-23 03:47:58,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,243 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 1 [2021-11-23 03:47:58,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,295 INFO L354 Elim1Store]: treesize reduction 52, result has 32.5 percent of original size [2021-11-23 03:47:58,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 398 treesize of output 284 [2021-11-23 03:47:58,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,402 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 1 [2021-11-23 03:47:58,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,474 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 1 [2021-11-23 03:47:58,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,496 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:47:58,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 255 treesize of output 1 [2021-11-23 03:47:58,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,536 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:58,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:47:58,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,551 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:47:58,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,572 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 163 treesize of output 1 [2021-11-23 03:47:58,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,596 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 1 [2021-11-23 03:47:58,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,618 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:58,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 424 treesize of output 1 [2021-11-23 03:47:58,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,638 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 1 [2021-11-23 03:47:58,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,653 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 1 [2021-11-23 03:47:58,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,685 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:47:58,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 331 treesize of output 1 [2021-11-23 03:47:58,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,748 INFO L354 Elim1Store]: treesize reduction 53, result has 18.5 percent of original size [2021-11-23 03:47:58,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 608 treesize of output 474 [2021-11-23 03:47:58,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,876 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 03:47:58,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 317 treesize of output 1 [2021-11-23 03:47:58,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,912 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-23 03:47:58,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 554 treesize of output 1 [2021-11-23 03:47:58,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,964 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:58,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 201 treesize of output 1 [2021-11-23 03:47:58,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:58,986 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:58,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 464 treesize of output 1 [2021-11-23 03:47:59,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,021 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:47:59,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,043 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:59,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:47:59,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,069 INFO L354 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2021-11-23 03:47:59,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 464 treesize of output 1 [2021-11-23 03:47:59,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,092 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 201 treesize of output 1 [2021-11-23 03:47:59,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,113 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 1 [2021-11-23 03:47:59,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,146 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 1 [2021-11-23 03:47:59,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,175 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:47:59,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 321 treesize of output 1 [2021-11-23 03:47:59,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,192 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 152 treesize of output 1 [2021-11-23 03:47:59,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,224 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 199 treesize of output 1 [2021-11-23 03:47:59,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,241 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:59,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 424 treesize of output 1 [2021-11-23 03:47:59,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,289 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 1 [2021-11-23 03:47:59,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,359 INFO L354 Elim1Store]: treesize reduction 55, result has 6.8 percent of original size [2021-11-23 03:47:59,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 528 treesize of output 400 [2021-11-23 03:47:59,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,634 INFO L354 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2021-11-23 03:47:59,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 374 treesize of output 272 [2021-11-23 03:47:59,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,658 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 1 [2021-11-23 03:47:59,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,685 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 161 treesize of output 1 [2021-11-23 03:47:59,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,712 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:47:59,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,730 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:59,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 440 treesize of output 1 [2021-11-23 03:47:59,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,744 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-23 03:47:59,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 1 [2021-11-23 03:47:59,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,771 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 1 [2021-11-23 03:47:59,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,813 INFO L354 Elim1Store]: treesize reduction 55, result has 28.6 percent of original size [2021-11-23 03:47:59,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 271 treesize of output 200 [2021-11-23 03:47:59,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,844 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 1 [2021-11-23 03:47:59,884 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,889 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:47:59,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,932 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:47:59,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 1 [2021-11-23 03:47:59,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,948 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:47:59,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,963 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:47:59,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:47:59,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:47:59,998 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:47:59,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 297 treesize of output 1 [2021-11-23 03:48:00,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,016 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:00,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 148 treesize of output 1 [2021-11-23 03:48:00,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,046 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:00,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:00,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,063 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:00,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 231 treesize of output 1 [2021-11-23 03:48:00,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,081 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:00,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 1 [2021-11-23 03:48:00,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 1 [2021-11-23 03:48:00,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:00,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548697163] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:48:00,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [754216503] [2021-11-23 03:48:00,390 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:48:00,390 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:48:00,390 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:48:00,390 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:48:00,391 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:48:00,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,547 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:48:00,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:48:00,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,632 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:48:00,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:48:00,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,673 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 47 treesize of output 59 [2021-11-23 03:48:00,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:00,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:00,882 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-23 03:48:00,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 347 treesize of output 375 [2021-11-23 03:48:01,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:01,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:01,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:01,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:01,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:01,130 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:48:01,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:48:01,331 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:48:01,358 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:02,253 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '876#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:48:02,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:48:02,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:48:02,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-11-23 03:48:02,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657864359] [2021-11-23 03:48:02,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:48:02,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 03:48:02,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:02,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 03:48:02,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:48:02,255 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:02,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:02,512 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2021-11-23 03:48:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:48:02,514 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-11-23 03:48:02,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:02,515 INFO L225 Difference]: With dead ends: 40 [2021-11-23 03:48:02,515 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 03:48:02,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 03:48:02,517 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:02,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2021-11-23 03:48:02,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 03:48:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 24. [2021-11-23 03:48:02,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:48:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2021-11-23 03:48:02,529 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 20 [2021-11-23 03:48:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:02,530 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2021-11-23 03:48:02,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2021-11-23 03:48:02,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:48:02,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:02,531 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:02,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:02,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:02,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:02,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:02,747 INFO L85 PathProgramCache]: Analyzing trace with hash -945910883, now seen corresponding path program 4 times [2021-11-23 03:48:02,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:02,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385189961] [2021-11-23 03:48:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:02,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:03,077 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:03,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:03,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385189961] [2021-11-23 03:48:03,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385189961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:03,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408176372] [2021-11-23 03:48:03,078 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 03:48:03,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:03,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:03,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:03,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 03:48:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:03,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 03:48:03,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:03,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:48:03,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:03,219 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-23 03:48:03,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 58 treesize of output 64 [2021-11-23 03:48:03,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:03,332 INFO L354 Elim1Store]: treesize reduction 396, result has 9.6 percent of original size [2021-11-23 03:48:03,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 107 treesize of output 125 [2021-11-23 03:48:04,413 INFO L354 Elim1Store]: treesize reduction 722, result has 1.0 percent of original size [2021-11-23 03:48:04,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 134 treesize of output 56 [2021-11-23 03:48:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:04,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:04,744 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:48:04,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1831710 treesize of output 1668902 [2021-11-23 03:48:06,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:48:06,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [943256156] [2021-11-23 03:48:06,505 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:48:06,506 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:48:06,506 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:48:06,506 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:48:06,506 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:48:06,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,652 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:48:06,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:48:06,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,736 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:48:06,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:48:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,780 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 61 treesize of output 73 [2021-11-23 03:48:06,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:06,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:06,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:06,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:06,943 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-23 03:48:06,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 360 treesize of output 376 [2021-11-23 03:48:06,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:06,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:06,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:07,006 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:48:07,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:48:07,171 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:48:07,197 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:08,007 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1110#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:48:08,008 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:48:08,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:48:08,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-23 03:48:08,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023945657] [2021-11-23 03:48:08,008 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:48:08,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:48:08,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:08,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:48:08,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:48:08,009 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:08,313 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-11-23 03:48:08,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:48:08,314 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-11-23 03:48:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:08,315 INFO L225 Difference]: With dead ends: 49 [2021-11-23 03:48:08,315 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 03:48:08,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=189, Invalid=1371, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:48:08,316 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:08,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:48:08,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 03:48:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 22. [2021-11-23 03:48:08,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:48:08,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-23 03:48:08,323 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 22 [2021-11-23 03:48:08,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:08,324 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-23 03:48:08,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:08,324 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-23 03:48:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 03:48:08,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:08,325 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:08,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:08,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 03:48:08,539 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash 847280778, now seen corresponding path program 5 times [2021-11-23 03:48:08,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:08,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883694177] [2021-11-23 03:48:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:08,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:08,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883694177] [2021-11-23 03:48:08,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883694177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613332546] [2021-11-23 03:48:08,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:48:08,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:08,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:08,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:08,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 03:48:09,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 03:48:09,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:48:09,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 03:48:09,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:09,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:48:09,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:09,110 INFO L354 Elim1Store]: treesize reduction 45, result has 21.1 percent of original size [2021-11-23 03:48:09,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 39 [2021-11-23 03:48:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:09,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:09,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:09,200 INFO L354 Elim1Store]: treesize reduction 233, result has 12.1 percent of original size [2021-11-23 03:48:09,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 69 treesize of output 87 [2021-11-23 03:48:09,738 INFO L354 Elim1Store]: treesize reduction 554, result has 1.2 percent of original size [2021-11-23 03:48:09,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 119 treesize of output 53 [2021-11-23 03:48:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:09,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:14,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:48:14,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13336003 treesize of output 12217803 [2021-11-23 03:48:25,096 WARN L227 SmtUtils]: Spent 11.06s on a formula simplification that was a NOOP. DAG size: 1856 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 03:48:25,431 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:48:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1137398121] [2021-11-23 03:48:25,434 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:48:25,434 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:48:25,434 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:48:25,434 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:48:25,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:48:25,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,575 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:48:25,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:48:25,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,664 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:48:25,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:48:25,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,707 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 61 treesize of output 73 [2021-11-23 03:48:25,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:25,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:25,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:25,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:25,868 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-23 03:48:25,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 360 treesize of output 376 [2021-11-23 03:48:25,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:25,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:25,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:25,951 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:48:25,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:48:26,106 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:48:26,132 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:27,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1371#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:48:27,015 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:48:27,015 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:48:27,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-23 03:48:27,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096839104] [2021-11-23 03:48:27,015 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:48:27,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:48:27,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:27,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:48:27,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1045, Unknown=2, NotChecked=0, Total=1190 [2021-11-23 03:48:27,017 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:27,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:27,394 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-11-23 03:48:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 03:48:27,394 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-23 03:48:27,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:27,395 INFO L225 Difference]: With dead ends: 42 [2021-11-23 03:48:27,395 INFO L226 Difference]: Without dead ends: 40 [2021-11-23 03:48:27,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=198, Invalid=1440, Unknown=2, NotChecked=0, Total=1640 [2021-11-23 03:48:27,397 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:27,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 59 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:48:27,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-23 03:48:27,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 26. [2021-11-23 03:48:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:48:27,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-23 03:48:27,404 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 23 [2021-11-23 03:48:27,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:27,404 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-23 03:48:27,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:27,405 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-23 03:48:27,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:48:27,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:27,406 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:27,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:27,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:27,631 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:27,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1471686795, now seen corresponding path program 6 times [2021-11-23 03:48:27,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:27,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263060263] [2021-11-23 03:48:27,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:27,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:28,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:28,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263060263] [2021-11-23 03:48:28,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263060263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:28,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028538088] [2021-11-23 03:48:28,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:48:28,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:28,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:28,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:28,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 03:48:28,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:48:28,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:48:28,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 03:48:28,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:28,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:48:28,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:28,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:28,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 43 [2021-11-23 03:48:28,602 INFO L354 Elim1Store]: treesize reduction 130, result has 5.1 percent of original size [2021-11-23 03:48:28,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 76 treesize of output 42 [2021-11-23 03:48:28,623 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:28,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:28,763 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:48:28,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1088 treesize of output 1000 [2021-11-23 03:48:28,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:28,817 INFO L354 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2021-11-23 03:48:28,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 444 treesize of output 378 [2021-11-23 03:48:28,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,006 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-23 03:48:29,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1095 treesize of output 837 [2021-11-23 03:48:29,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,164 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:29,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1401 treesize of output 1071 [2021-11-23 03:48:29,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,478 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-11-23 03:48:29,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 202 treesize of output 142 [2021-11-23 03:48:29,487 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 311 treesize of output 299 [2021-11-23 03:48:29,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,584 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-23 03:48:29,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 938 treesize of output 1 [2021-11-23 03:48:29,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,625 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:29,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 202 treesize of output 1 [2021-11-23 03:48:29,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,650 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:29,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 249 treesize of output 1 [2021-11-23 03:48:29,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,690 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:29,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 1 [2021-11-23 03:48:29,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,708 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:29,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 193 treesize of output 1 [2021-11-23 03:48:29,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,747 INFO L354 Elim1Store]: treesize reduction 52, result has 32.5 percent of original size [2021-11-23 03:48:29,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 584 treesize of output 430 [2021-11-23 03:48:29,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,890 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:29,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 142 treesize of output 1 [2021-11-23 03:48:29,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,924 INFO L354 Elim1Store]: treesize reduction 51, result has 33.8 percent of original size [2021-11-23 03:48:29,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 374 treesize of output 281 [2021-11-23 03:48:29,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:29,976 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:29,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 424 treesize of output 1 [2021-11-23 03:48:30,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,033 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:30,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1219 treesize of output 1 [2021-11-23 03:48:30,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,064 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-23 03:48:30,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 438 treesize of output 1 [2021-11-23 03:48:30,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,136 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:30,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,165 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:30,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,194 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:48:30,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,208 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,233 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:48:30,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,248 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,265 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,287 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:30,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,306 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:30,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,323 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 440 treesize of output 1 [2021-11-23 03:48:30,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,346 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:30,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,369 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 440 treesize of output 1 [2021-11-23 03:48:30,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,395 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:30,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,413 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 440 treesize of output 1 [2021-11-23 03:48:30,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,433 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:30,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,465 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:48:30,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,480 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,512 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:48:30,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,527 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,552 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:48:30,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,567 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,587 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,604 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,627 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:30,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 956 treesize of output 1 [2021-11-23 03:48:30,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,678 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 202 treesize of output 1 [2021-11-23 03:48:30,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,742 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 1 [2021-11-23 03:48:30,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,772 INFO L354 Elim1Store]: treesize reduction 69, result has 10.4 percent of original size [2021-11-23 03:48:30,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 337 treesize of output 238 [2021-11-23 03:48:30,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,813 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 1 [2021-11-23 03:48:30,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,839 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 216 treesize of output 1 [2021-11-23 03:48:30,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,882 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:48:30,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,899 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,926 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:30,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 567 treesize of output 1 [2021-11-23 03:48:30,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,943 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:30,963 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:30,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 248 treesize of output 1 [2021-11-23 03:48:30,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,002 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:31,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,027 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:31,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,047 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:31,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 440 treesize of output 1 [2021-11-23 03:48:31,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,083 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 197 treesize of output 1 [2021-11-23 03:48:31,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,110 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:31,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 440 treesize of output 1 [2021-11-23 03:48:31,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,173 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-23 03:48:31,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 575 treesize of output 1 [2021-11-23 03:48:31,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,241 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:31,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 354 treesize of output 1 [2021-11-23 03:48:31,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,261 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 1 [2021-11-23 03:48:31,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,364 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:31,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 481 treesize of output 1 [2021-11-23 03:48:31,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,409 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 1 [2021-11-23 03:48:31,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,423 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 1 [2021-11-23 03:48:31,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,450 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:31,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 271 treesize of output 1 [2021-11-23 03:48:31,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,462 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 1 [2021-11-23 03:48:31,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,480 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:31,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 321 treesize of output 1 [2021-11-23 03:48:31,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,547 INFO L354 Elim1Store]: treesize reduction 58, result has 1.7 percent of original size [2021-11-23 03:48:31,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 954 treesize of output 1 [2021-11-23 03:48:31,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,591 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 614 treesize of output 1 [2021-11-23 03:48:31,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,639 INFO L354 Elim1Store]: treesize reduction 55, result has 6.8 percent of original size [2021-11-23 03:48:31,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 525 treesize of output 409 [2021-11-23 03:48:31,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,854 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:48:31,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,869 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:31,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 1 [2021-11-23 03:48:31,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,887 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 97 treesize of output 1 [2021-11-23 03:48:31,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,905 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:31,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 255 treesize of output 1 [2021-11-23 03:48:31,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,918 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:48:31,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:31,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:31,997 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:31,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 112 treesize of output 1 [2021-11-23 03:48:32,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,025 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,046 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 1 [2021-11-23 03:48:32,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,060 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,083 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:32,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 231 treesize of output 1 [2021-11-23 03:48:32,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,097 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,130 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,166 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,188 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:48:32,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,215 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,237 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:32,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:48:32,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,264 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:48:32,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,288 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:48:32,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,305 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 128 treesize of output 1 [2021-11-23 03:48:32,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,325 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:48:32,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,349 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,376 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,417 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,445 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 1 [2021-11-23 03:48:32,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,461 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,488 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:32,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 231 treesize of output 1 [2021-11-23 03:48:32,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,504 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,523 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,544 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,565 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,583 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:48:32,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,610 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,629 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:32,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:48:32,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,659 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 231 treesize of output 1 [2021-11-23 03:48:32,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,676 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 1 [2021-11-23 03:48:32,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,706 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,728 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,750 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,769 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:48:32,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,794 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,813 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-23 03:48:32,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:48:32,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,839 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 144 treesize of output 1 [2021-11-23 03:48:32,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,857 INFO L354 Elim1Store]: treesize reduction 62, result has 1.6 percent of original size [2021-11-23 03:48:32,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 358 treesize of output 1 [2021-11-23 03:48:32,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,886 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-23 03:48:32,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 1 [2021-11-23 03:48:32,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:32,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:32,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:33,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028538088] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:48:33,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1185056138] [2021-11-23 03:48:33,352 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:48:33,352 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:48:33,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:48:33,353 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:48:33,353 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:48:33,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,495 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:48:33,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:48:33,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,578 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:48:33,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:48:33,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,608 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 47 treesize of output 59 [2021-11-23 03:48:33,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:33,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:33,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:33,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:33,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:33,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:33,800 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-23 03:48:33,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 347 treesize of output 375 [2021-11-23 03:48:34,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:34,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:34,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:34,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:34,049 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:48:34,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:48:34,231 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:48:34,257 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:35,228 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1656#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:48:35,228 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:48:35,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:48:35,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 29 [2021-11-23 03:48:35,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701685124] [2021-11-23 03:48:35,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:48:35,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 03:48:35,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:35,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 03:48:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1254, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 03:48:35,231 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:48:36,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:36,311 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2021-11-23 03:48:36,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-23 03:48:36,311 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2021-11-23 03:48:36,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:36,312 INFO L225 Difference]: With dead ends: 64 [2021-11-23 03:48:36,312 INFO L226 Difference]: Without dead ends: 62 [2021-11-23 03:48:36,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=363, Invalid=2829, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 03:48:36,315 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 23 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:36,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 148 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 383 Invalid, 0 Unknown, 93 Unchecked, 0.3s Time] [2021-11-23 03:48:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-23 03:48:36,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 28. [2021-11-23 03:48:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:48:36,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2021-11-23 03:48:36,325 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 24 [2021-11-23 03:48:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:36,325 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2021-11-23 03:48:36,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 29 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:48:36,326 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2021-11-23 03:48:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:48:36,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:36,327 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:36,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:36,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:36,531 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:36,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:36,531 INFO L85 PathProgramCache]: Analyzing trace with hash -175692323, now seen corresponding path program 7 times [2021-11-23 03:48:36,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:36,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974160884] [2021-11-23 03:48:36,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:36,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:36,598 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:36,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974160884] [2021-11-23 03:48:36,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974160884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:36,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990846410] [2021-11-23 03:48:36,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 03:48:36,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:36,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:36,600 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:36,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 03:48:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:36,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:48:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:36,774 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:36,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:36,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990846410] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:48:36,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2110372098] [2021-11-23 03:48:36,855 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:48:36,855 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:48:36,855 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:48:36,855 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:48:36,855 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:48:36,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:36,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:36,977 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:48:36,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:48:36,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:36,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,043 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:48:37,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:48:37,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,075 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 47 treesize of output 59 [2021-11-23 03:48:37,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:37,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:37,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:37,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:37,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:37,233 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-23 03:48:37,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 347 treesize of output 375 [2021-11-23 03:48:37,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:37,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:37,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:37,401 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:48:37,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:48:37,546 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:48:37,567 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:38,180 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2006#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:48:38,180 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:48:38,180 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:48:38,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2021-11-23 03:48:38,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025559935] [2021-11-23 03:48:38,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:48:38,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:48:38,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:38,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:48:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-11-23 03:48:38,182 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:38,271 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-11-23 03:48:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:48:38,272 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-23 03:48:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:38,272 INFO L225 Difference]: With dead ends: 55 [2021-11-23 03:48:38,273 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 03:48:38,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=686, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:48:38,274 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:38,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 64 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:48:38,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 03:48:38,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-11-23 03:48:38,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:48:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-11-23 03:48:38,283 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 26 [2021-11-23 03:48:38,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:38,284 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-11-23 03:48:38,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 17 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-11-23 03:48:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:48:38,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:38,285 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:38,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:38,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 03:48:38,499 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:38,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:38,499 INFO L85 PathProgramCache]: Analyzing trace with hash 214951445, now seen corresponding path program 8 times [2021-11-23 03:48:38,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:38,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679992371] [2021-11-23 03:48:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:38,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:39,039 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:39,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679992371] [2021-11-23 03:48:39,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679992371] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:39,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139254023] [2021-11-23 03:48:39,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:48:39,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:39,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:39,041 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:39,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 03:48:39,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 03:48:39,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:48:39,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 03:48:39,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:39,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:48:39,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:39,299 INFO L354 Elim1Store]: treesize reduction 51, result has 19.0 percent of original size [2021-11-23 03:48:39,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 43 [2021-11-23 03:48:39,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:39,395 INFO L354 Elim1Store]: treesize reduction 341, result has 9.8 percent of original size [2021-11-23 03:48:39,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 107 [2021-11-23 03:48:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:40,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:40,397 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:48:40,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 9281682 treesize of output 8495258 [2021-11-23 03:48:48,547 WARN L227 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 693 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 03:48:48,701 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:48:48,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [507060245] [2021-11-23 03:48:48,704 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:48:48,704 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:48:48,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:48:48,704 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:48:48,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:48:48,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,847 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:48:48,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:48:48,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,930 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:48:48,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:48:48,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:48,973 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 47 treesize of output 59 [2021-11-23 03:48:49,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:49,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:49,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:49,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:49,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:49,176 INFO L354 Elim1Store]: treesize reduction 347, result has 19.5 percent of original size [2021-11-23 03:48:49,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 347 treesize of output 375 [2021-11-23 03:48:49,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:49,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:49,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:48:49,373 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:48:49,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:48:49,515 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:48:49,536 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:48:50,469 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2290#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:48:50,469 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:48:50,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:48:50,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-23 03:48:50,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434304087] [2021-11-23 03:48:50,470 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:48:50,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:48:50,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:48:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:48:50,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1391, Unknown=0, NotChecked=0, Total=1560 [2021-11-23 03:48:50,472 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:48:51,102 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-11-23 03:48:51,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 03:48:51,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-11-23 03:48:51,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:48:51,103 INFO L225 Difference]: With dead ends: 73 [2021-11-23 03:48:51,103 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 03:48:51,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=271, Invalid=2279, Unknown=0, NotChecked=0, Total=2550 [2021-11-23 03:48:51,105 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:48:51,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 108 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:48:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 03:48:51,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 29. [2021-11-23 03:48:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:48:51,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-11-23 03:48:51,115 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 26 [2021-11-23 03:48:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:48:51,116 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-11-23 03:48:51,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:48:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-11-23 03:48:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:48:51,117 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:48:51,117 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:48:51,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:48:51,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 03:48:51,319 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:48:51,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:48:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash 10296594, now seen corresponding path program 9 times [2021-11-23 03:48:51,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:48:51,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550799182] [2021-11-23 03:48:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:48:51,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:48:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:48:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:48:51,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:48:51,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550799182] [2021-11-23 03:48:51,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550799182] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:48:51,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523683695] [2021-11-23 03:48:51,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 03:48:51,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:48:51,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:48:51,713 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:48:51,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 03:48:51,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 03:48:51,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 03:48:51,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 03:48:51,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:48:51,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:48:51,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,843 INFO L354 Elim1Store]: treesize reduction 68, result has 17.1 percent of original size [2021-11-23 03:48:51,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:48:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:48:51,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 91 [2021-11-23 03:48:52,572 INFO L354 Elim1Store]: treesize reduction 442, result has 1.6 percent of original size [2021-11-23 03:48:52,573 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 106 treesize of output 48 [2021-11-23 03:48:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:48:52,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:48:52,919 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:48:52,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37521882 treesize of output 34376162 [2021-11-23 03:49:24,298 WARN L227 SmtUtils]: Spent 31.38s on a formula simplification that was a NOOP. DAG size: 857 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-23 03:49:24,531 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-23 03:49:24,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [979131521] [2021-11-23 03:49:24,534 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-23 03:49:24,534 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:49:24,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:49:24,534 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:49:24,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:49:24,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,649 INFO L354 Elim1Store]: treesize reduction 70, result has 31.4 percent of original size [2021-11-23 03:49:24,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 53 [2021-11-23 03:49:24,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,716 INFO L354 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2021-11-23 03:49:24,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2021-11-23 03:49:24,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,741 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 61 treesize of output 73 [2021-11-23 03:49:24,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:49:24,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:49:24,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:49:24,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:49:24,881 INFO L354 Elim1Store]: treesize reduction 145, result has 19.0 percent of original size [2021-11-23 03:49:24,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 23 case distinctions, treesize of input 360 treesize of output 376 [2021-11-23 03:49:24,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:24,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:49:24,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 03:49:24,944 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-11-23 03:49:24,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 53 [2021-11-23 03:49:25,128 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2021-11-23 03:49:25,155 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:49:26,284 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2627#(and (<= 0 (+ |ULTIMATE.start_main_~S~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~S~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#acopy~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start_main_~#acopy~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:49:26,285 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:49:26,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:49:26,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-11-23 03:49:26,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136109931] [2021-11-23 03:49:26,285 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 03:49:26,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 03:49:26,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:49:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 03:49:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 03:49:26,287 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:49:26,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:49:26,860 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-11-23 03:49:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:49:26,860 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-11-23 03:49:26,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:49:26,861 INFO L225 Difference]: With dead ends: 47 [2021-11-23 03:49:26,861 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 03:49:26,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=214, Invalid=1948, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 03:49:26,862 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:49:26,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 79 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:49:26,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 03:49:26,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2021-11-23 03:49:26,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:49:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2021-11-23 03:49:26,873 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 27 [2021-11-23 03:49:26,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:49:26,874 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2021-11-23 03:49:26,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:49:26,874 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2021-11-23 03:49:26,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:49:26,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:49:26,875 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:49:26,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:49:27,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:49:27,095 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:49:27,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:49:27,095 INFO L85 PathProgramCache]: Analyzing trace with hash 400940362, now seen corresponding path program 10 times [2021-11-23 03:49:27,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:49:27,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723464784] [2021-11-23 03:49:27,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:49:27,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:49:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:27,603 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:49:27,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:49:27,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723464784] [2021-11-23 03:49:27,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723464784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:49:27,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935321246] [2021-11-23 03:49:27,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 03:49:27,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:49:27,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:49:27,607 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:49:27,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3db2747a-9641-4122-88c0-216f74eb3518/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 03:49:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:49:27,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 03:49:27,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:49:27,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-23 03:49:27,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:27,794 INFO L354 Elim1Store]: treesize reduction 69, result has 17.9 percent of original size [2021-11-23 03:49:27,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 68 [2021-11-23 03:49:27,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:27,917 INFO L354 Elim1Store]: treesize reduction 396, result has 9.6 percent of original size [2021-11-23 03:49:27,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 113 treesize of output 131 [2021-11-23 03:49:28,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 03:49:28,109 INFO L354 Elim1Store]: treesize reduction 884, result has 7.1 percent of original size [2021-11-23 03:49:28,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 26 case distinctions, treesize of input 162 treesize of output 192 [2021-11-23 03:49:30,316 INFO L354 Elim1Store]: treesize reduction 1538, result has 0.5 percent of original size [2021-11-23 03:49:30,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 181 treesize of output 69 [2021-11-23 03:49:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 35 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:49:30,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:49:33,817 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 03:49:33,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3206435363103119 treesize of output 2924960386392471