./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P --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 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:11:18,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:11:18,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:11:18,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:11:18,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:11:18,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:11:18,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:11:18,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:11:18,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:11:18,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:11:18,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:11:18,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:11:18,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:11:18,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:11:18,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:11:18,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:11:18,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:11:18,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:11:18,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:11:18,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:11:18,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:11:18,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:11:18,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:11:18,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:11:18,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:11:18,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:11:18,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:11:18,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:11:18,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:11:18,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:11:18,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:11:18,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:11:18,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:11:18,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:11:18,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:11:18,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:11:18,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:11:18,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:11:18,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:11:18,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:11:18,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:11:18,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 00:11:18,998 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:11:19,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:11:19,003 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:11:19,003 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:11:19,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:11:19,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:11:19,006 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:11:19,006 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:11:19,007 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:11:19,007 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:11:19,008 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:11:19,009 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:11:19,009 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:11:19,009 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:11:19,010 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:11:19,010 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:11:19,010 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:11:19,011 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:11:19,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:11:19,012 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:11:19,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:11:19,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:11:19,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:11:19,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:11:19,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:11:19,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:11:19,016 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:11:19,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:11:19,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:11:19,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:11:19,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:11:19,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:11:19,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:11:19,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:11:19,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:11:19,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:11:19,020 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:11:19,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:11:19,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:11:19,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:11:19,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:11:19,021 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_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14558cb0aef5bf60b4a230892060936885d87372f6515d5d8ad78f7b805ad735 [2021-11-21 00:11:19,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:11:19,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:11:19,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:11:19,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:11:19,424 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:11:19,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-21 00:11:19,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/data/bcffd6068/fe7a4eaa699a4bee9e6adc288637793e/FLAG1afe9acf7 [2021-11-21 00:11:20,408 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:11:20,408 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i [2021-11-21 00:11:20,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/data/bcffd6068/fe7a4eaa699a4bee9e6adc288637793e/FLAG1afe9acf7 [2021-11-21 00:11:20,519 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/data/bcffd6068/fe7a4eaa699a4bee9e6adc288637793e [2021-11-21 00:11:20,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:11:20,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:11:20,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:11:20,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:11:20,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:11:20,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:11:20" (1/1) ... [2021-11-21 00:11:20,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff202ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:20, skipping insertion in model container [2021-11-21 00:11:20,550 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:11:20" (1/1) ... [2021-11-21 00:11:20,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:11:20,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:11:21,192 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_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2021-11-21 00:11:21,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:11:21,476 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:11:21,531 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_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-2.i[33022,33035] [2021-11-21 00:11:21,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:11:21,788 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:11:21,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21 WrapperNode [2021-11-21 00:11:21,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:11:21,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:11:21,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:11:21,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:11:21,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:21,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:21,988 INFO L137 Inliner]: procedures = 177, calls = 575, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2330 [2021-11-21 00:11:21,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:11:21,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:11:21,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:11:21,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:11:21,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:21,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:22,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:22,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:22,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:22,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:22,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:22,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:11:22,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:11:22,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:11:22,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:11:22,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (1/1) ... [2021-11-21 00:11:22,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:11:22,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:22,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:11:22,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:11:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-21 00:11:22,407 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-21 00:11:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:11:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:11:22,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:11:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:11:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:11:22,409 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:11:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:11:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:11:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:11:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:11:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:11:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:11:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:11:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:11:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:11:22,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:11:22,880 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:11:22,882 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:11:25,280 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:11:26,223 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:11:26,223 INFO L301 CfgBuilder]: Removed 160 assume(true) statements. [2021-11-21 00:11:26,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:11:26 BoogieIcfgContainer [2021-11-21 00:11:26,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:11:26,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:11:26,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:11:26,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:11:26,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:11:20" (1/3) ... [2021-11-21 00:11:26,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df002ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:11:26, skipping insertion in model container [2021-11-21 00:11:26,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:21" (2/3) ... [2021-11-21 00:11:26,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df002ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:11:26, skipping insertion in model container [2021-11-21 00:11:26,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:11:26" (3/3) ... [2021-11-21 00:11:26,241 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-2.i [2021-11-21 00:11:26,248 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:11:26,249 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:11:26,365 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:11:26,381 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 [2021-11-21 00:11:26,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:11:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 246 states have (on average 1.8252032520325203) internal successors, (449), 251 states have internal predecessors, (449), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-21 00:11:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-21 00:11:26,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:26,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:26,445 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1013260908, now seen corresponding path program 1 times [2021-11-21 00:11:26,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:26,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853495392] [2021-11-21 00:11:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:26,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:11:26,711 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:26,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853495392] [2021-11-21 00:11:26,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853495392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:26,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:26,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:11:26,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374934735] [2021-11-21 00:11:26,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:26,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:11:26,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:11:26,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:11:26,770 INFO L87 Difference]: Start difference. First operand has 265 states, 246 states have (on average 1.8252032520325203) internal successors, (449), 251 states have internal predecessors, (449), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:11:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:28,331 INFO L93 Difference]: Finished difference Result 529 states and 961 transitions. [2021-11-21 00:11:28,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:11:28,335 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-21 00:11:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:28,351 INFO L225 Difference]: With dead ends: 529 [2021-11-21 00:11:28,352 INFO L226 Difference]: Without dead ends: 249 [2021-11-21 00:11:28,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:11:28,363 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:28,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 288 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 00:11:28,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-11-21 00:11:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2021-11-21 00:11:28,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 231 states have (on average 1.199134199134199) internal successors, (277), 236 states have internal predecessors, (277), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:11:28,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 304 transitions. [2021-11-21 00:11:28,436 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 304 transitions. Word has length 12 [2021-11-21 00:11:28,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:28,437 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 304 transitions. [2021-11-21 00:11:28,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:11:28,437 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 304 transitions. [2021-11-21 00:11:28,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 00:11:28,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:28,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:28,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:11:28,442 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:28,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:28,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1808167895, now seen corresponding path program 1 times [2021-11-21 00:11:28,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:28,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378241745] [2021-11-21 00:11:28,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:28,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:11:28,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:28,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378241745] [2021-11-21 00:11:28,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378241745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:28,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:28,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:11:28,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080968320] [2021-11-21 00:11:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:28,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:11:28,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:28,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:11:28,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:11:28,539 INFO L87 Difference]: Start difference. First operand 249 states and 304 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:11:31,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:31,663 INFO L93 Difference]: Finished difference Result 425 states and 521 transitions. [2021-11-21 00:11:31,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:11:31,664 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-21 00:11:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:31,668 INFO L225 Difference]: With dead ends: 425 [2021-11-21 00:11:31,668 INFO L226 Difference]: Without dead ends: 276 [2021-11-21 00:11:31,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:31,672 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 27 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:31,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 770 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-21 00:11:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-21 00:11:31,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 251. [2021-11-21 00:11:31,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 233 states have (on average 1.1974248927038627) internal successors, (279), 238 states have internal predecessors, (279), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-21 00:11:31,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 306 transitions. [2021-11-21 00:11:31,696 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 306 transitions. Word has length 24 [2021-11-21 00:11:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:31,697 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 306 transitions. [2021-11-21 00:11:31,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:11:31,698 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 306 transitions. [2021-11-21 00:11:31,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-21 00:11:31,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:31,701 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:31,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:11:31,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:31,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:31,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1787107309, now seen corresponding path program 1 times [2021-11-21 00:11:31,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:31,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199714361] [2021-11-21 00:11:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:31,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:31,733 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:11:31,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226495836] [2021-11-21 00:11:31,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:31,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:31,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:31,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:11:31,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:11:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:32,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:11:32,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:11:32,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:11:32,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:11:32,506 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199714361] [2021-11-21 00:11:32,507 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:11:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226495836] [2021-11-21 00:11:32,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226495836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:32,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:32,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:11:32,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620342438] [2021-11-21 00:11:32,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:32,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:11:32,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:11:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:11:32,514 INFO L87 Difference]: Start difference. First operand 251 states and 306 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:11:35,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:11:35,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:35,912 INFO L93 Difference]: Finished difference Result 614 states and 746 transitions. [2021-11-21 00:11:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:11:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-21 00:11:35,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:35,917 INFO L225 Difference]: With dead ends: 614 [2021-11-21 00:11:35,917 INFO L226 Difference]: Without dead ends: 366 [2021-11-21 00:11:35,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:11:35,920 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 120 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:35,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 532 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-21 00:11:35,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-21 00:11:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 362. [2021-11-21 00:11:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 1.1799410029498525) internal successors, (400), 344 states have internal predecessors, (400), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-21 00:11:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 437 transitions. [2021-11-21 00:11:35,954 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 437 transitions. Word has length 49 [2021-11-21 00:11:35,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:35,955 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 437 transitions. [2021-11-21 00:11:35,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:11:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 437 transitions. [2021-11-21 00:11:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:11:35,960 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:35,960 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:36,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:11:36,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:36,187 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:36,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:36,188 INFO L85 PathProgramCache]: Analyzing trace with hash -338981431, now seen corresponding path program 1 times [2021-11-21 00:11:36,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:36,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117121897] [2021-11-21 00:11:36,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:36,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:36,230 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:11:36,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [689045044] [2021-11-21 00:11:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:36,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:36,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:36,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:11:36,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:11:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:36,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:11:36,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:11:36,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 00:11:36,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-21 00:11:37,045 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:11:37,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:11:37,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:37,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117121897] [2021-11-21 00:11:37,048 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:11:37,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689045044] [2021-11-21 00:11:37,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [689045044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:37,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:37,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:11:37,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542350983] [2021-11-21 00:11:37,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:37,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:11:37,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:37,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:11:37,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:11:37,055 INFO L87 Difference]: Start difference. First operand 362 states and 437 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:11:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:41,976 INFO L93 Difference]: Finished difference Result 674 states and 815 transitions. [2021-11-21 00:11:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:11:41,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2021-11-21 00:11:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:41,981 INFO L225 Difference]: With dead ends: 674 [2021-11-21 00:11:41,981 INFO L226 Difference]: Without dead ends: 362 [2021-11-21 00:11:41,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:41,984 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 12 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:41,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 772 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2021-11-21 00:11:41,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-21 00:11:42,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2021-11-21 00:11:42,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 1.176991150442478) internal successors, (399), 344 states have internal predecessors, (399), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 15 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-21 00:11:42,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 436 transitions. [2021-11-21 00:11:42,012 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 436 transitions. Word has length 62 [2021-11-21 00:11:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:42,012 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 436 transitions. [2021-11-21 00:11:42,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:11:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 436 transitions. [2021-11-21 00:11:42,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-21 00:11:42,018 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:42,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:42,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:11:42,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:42,255 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:42,256 INFO L85 PathProgramCache]: Analyzing trace with hash -334329145, now seen corresponding path program 1 times [2021-11-21 00:11:42,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:42,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570881608] [2021-11-21 00:11:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:42,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:42,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:11:42,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1483886789] [2021-11-21 00:11:42,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:42,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:42,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:42,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:11:42,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:11:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:42,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:11:42,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:11:43,051 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-21 00:11:43,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:11:43,052 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:43,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570881608] [2021-11-21 00:11:43,055 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:11:43,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483886789] [2021-11-21 00:11:43,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483886789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:43,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:43,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:11:43,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845267386] [2021-11-21 00:11:43,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:43,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:11:43,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:43,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:11:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:11:43,059 INFO L87 Difference]: Start difference. First operand 362 states and 436 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:11:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:45,733 INFO L93 Difference]: Finished difference Result 820 states and 988 transitions. [2021-11-21 00:11:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:11:45,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 83 [2021-11-21 00:11:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:45,745 INFO L225 Difference]: With dead ends: 820 [2021-11-21 00:11:45,745 INFO L226 Difference]: Without dead ends: 484 [2021-11-21 00:11:45,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:11:45,749 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 110 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:45,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 530 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-21 00:11:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-21 00:11:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 429. [2021-11-21 00:11:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 403 states have (on average 1.1687344913151365) internal successors, (471), 408 states have internal predecessors, (471), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-21 00:11:45,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 514 transitions. [2021-11-21 00:11:45,809 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 514 transitions. Word has length 83 [2021-11-21 00:11:45,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:45,809 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 514 transitions. [2021-11-21 00:11:45,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:11:45,809 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 514 transitions. [2021-11-21 00:11:45,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-21 00:11:45,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:45,813 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:45,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:11:46,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:46,023 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:46,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1903584894, now seen corresponding path program 1 times [2021-11-21 00:11:46,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:46,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912551099] [2021-11-21 00:11:46,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:46,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:46,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:11:46,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929444450] [2021-11-21 00:11:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:46,063 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:46,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:46,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:11:46,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:11:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:11:46,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:11:46,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:11:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 00:11:46,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:11:46,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:11:46,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912551099] [2021-11-21 00:11:46,887 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:11:46,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929444450] [2021-11-21 00:11:46,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929444450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:11:46,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:11:46,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:11:46,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91858851] [2021-11-21 00:11:46,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:11:46,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:11:46,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:11:46,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:11:46,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:11:46,891 INFO L87 Difference]: Start difference. First operand 429 states and 514 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:11:48,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:11:48,240 INFO L93 Difference]: Finished difference Result 719 states and 867 transitions. [2021-11-21 00:11:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:11:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2021-11-21 00:11:48,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:11:48,244 INFO L225 Difference]: With dead ends: 719 [2021-11-21 00:11:48,244 INFO L226 Difference]: Without dead ends: 351 [2021-11-21 00:11:48,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:11:48,247 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 438 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:11:48,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 334 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-21 00:11:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-21 00:11:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2021-11-21 00:11:48,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 330 states have (on average 1.1666666666666667) internal successors, (385), 335 states have internal predecessors, (385), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-21 00:11:48,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 418 transitions. [2021-11-21 00:11:48,272 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 418 transitions. Word has length 96 [2021-11-21 00:11:48,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:11:48,273 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 418 transitions. [2021-11-21 00:11:48,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:11:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 418 transitions. [2021-11-21 00:11:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-21 00:11:48,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:11:48,276 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:11:48,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:11:48,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:48,491 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:11:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:11:48,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1222209427, now seen corresponding path program 1 times [2021-11-21 00:11:48,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:11:48,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914319742] [2021-11-21 00:11:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:48,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:11:48,523 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:11:48,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351665600] [2021-11-21 00:11:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:11:48,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:11:48,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:11:48,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:11:48,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:19:32,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:33,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:19:33,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 00:19:33,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:19:33,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:33,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914319742] [2021-11-21 00:19:33,351 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:19:33,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351665600] [2021-11-21 00:19:33,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351665600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:33,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:33,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:33,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623466200] [2021-11-21 00:19:33,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:33,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:33,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:33,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:33,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:33,356 INFO L87 Difference]: Start difference. First operand 351 states and 418 transitions. Second operand has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:19:38,697 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-21 00:19:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:38,780 INFO L93 Difference]: Finished difference Result 684 states and 823 transitions. [2021-11-21 00:19:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:38,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 103 [2021-11-21 00:19:38,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:38,784 INFO L225 Difference]: With dead ends: 684 [2021-11-21 00:19:38,785 INFO L226 Difference]: Without dead ends: 353 [2021-11-21 00:19:38,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:38,787 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 1 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:38,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 806 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-21 00:19:38,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-11-21 00:19:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2021-11-21 00:19:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 331 states have (on average 1.1691842900302114) internal successors, (387), 337 states have internal predecessors, (387), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (19), 13 states have call predecessors, (19), 16 states have call successors, (19) [2021-11-21 00:19:38,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 423 transitions. [2021-11-21 00:19:38,816 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 423 transitions. Word has length 103 [2021-11-21 00:19:38,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:38,817 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 423 transitions. [2021-11-21 00:19:38,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-21 00:19:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 423 transitions. [2021-11-21 00:19:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-21 00:19:38,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:38,820 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:38,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:39,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:39,027 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:19:39,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 221127857, now seen corresponding path program 1 times [2021-11-21 00:19:39,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:39,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564477036] [2021-11-21 00:19:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:39,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:39,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:19:39,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766450853] [2021-11-21 00:19:39,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:39,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:39,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:39,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:39,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ae63d46-8c3d-4eb2-b324-c750e97a5aa6/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:23:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:23:14,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:23:14,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:23:15,066 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:23:15,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:23:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-21 00:23:15,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:23:15,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564477036] [2021-11-21 00:23:15,392 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:23:15,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766450853] [2021-11-21 00:23:15,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766450853] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:23:15,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [228032185] [2021-11-21 00:23:15,414 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2021-11-21 00:23:15,415 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:23:15,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:23:15,425 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:23:15,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:23:15,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:15,702 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 00:23:15,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2021-11-21 00:23:15,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:15,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 00:23:15,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:23:15,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-21 00:23:15,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:15,787 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 26 treesize of output 28 [2021-11-21 00:23:15,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:15,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 00:23:15,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,022 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 00:23:16,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 53 [2021-11-21 00:23:16,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,098 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-11-21 00:23:16,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-11-21 00:23:16,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 00:23:16,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:16,178 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:23:16,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 00:23:18,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 77 [2021-11-21 00:23:18,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 76 [2021-11-21 00:23:18,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 00:23:18,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2021-11-21 00:23:18,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 00:23:18,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2021-11-21 00:23:18,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 98 [2021-11-21 00:23:18,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 00:23:18,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2021-11-21 00:23:18,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,775 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:23:18,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 75 treesize of output 77 [2021-11-21 00:23:18,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 115 [2021-11-21 00:23:18,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:18,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:19,028 INFO L354 Elim1Store]: treesize reduction 194, result has 22.4 percent of original size [2021-11-21 00:23:19,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 127 treesize of output 163 [2021-11-21 00:23:19,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:19,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:19,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:19,106 INFO L354 Elim1Store]: treesize reduction 120, result has 14.9 percent of original size [2021-11-21 00:23:19,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 156 [2021-11-21 00:23:19,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:23:19,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 00:23:19,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-21 00:23:19,945 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-21 00:23:19,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 88 [2021-11-21 00:23:19,979 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-21 00:23:19,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 91 [2021-11-21 00:23:20,043 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-21 00:23:20,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 91 treesize of output 94 [2021-11-21 00:23:20,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 00:23:20,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 00:23:20,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-21 00:23:20,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 00:23:20,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 00:23:20,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 00:23:20,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-11-21 00:23:20,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 26 [2021-11-21 00:23:20,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:20,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-11-21 00:23:28,354 WARN L227 SmtUtils]: Spent 7.37s on a formula simplification. DAG size of input: 66 DAG size of output: 32 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:23:28,355 INFO L354 Elim1Store]: treesize reduction 348, result has 15.7 percent of original size [2021-11-21 00:23:28,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2847 treesize of output 2324 [2021-11-21 00:23:28,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:38,350 WARN L227 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 90 DAG size of output: 46 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:23:38,351 INFO L354 Elim1Store]: treesize reduction 262, result has 32.6 percent of original size [2021-11-21 00:23:38,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 2948 treesize of output 2666 [2021-11-21 00:23:52,259 WARN L227 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 252 DAG size of output: 143 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:23:52,260 INFO L354 Elim1Store]: treesize reduction 2662, result has 30.3 percent of original size [2021-11-21 00:23:52,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 2852 treesize of output 2682 [2021-11-21 00:23:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:52,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:52,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:54,259 INFO L354 Elim1Store]: treesize reduction 188, result has 20.0 percent of original size [2021-11-21 00:23:54,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 6 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 25950 treesize of output 25981 [2021-11-21 00:23:54,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:54,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:55,094 INFO L354 Elim1Store]: treesize reduction 126, result has 17.1 percent of original size [2021-11-21 00:23:55,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 25960 treesize of output 25974 [2021-11-21 00:23:56,554 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:23:56,695 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:23:57,158 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:23:57,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:57,411 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-11-21 00:23:57,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 36 treesize of output 20 [2021-11-21 00:23:57,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:58,147 INFO L354 Elim1Store]: treesize reduction 11, result has 56.0 percent of original size [2021-11-21 00:23:58,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 46 treesize of output 44 [2021-11-21 00:23:59,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:23:59,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:59,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:23:59,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:59,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:23:59,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:59,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:59,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:59,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:23:59,115 INFO L244 Elim1Store]: Index analysis took 102 ms [2021-11-21 00:23:59,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 817 treesize of output 369 [2021-11-21 00:24:00,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:00,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:00,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:00,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:00,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:00,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:00,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:00,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:00,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 815 treesize of output 365 [2021-11-21 00:24:00,454 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:24:01,227 INFO L244 Elim1Store]: Index analysis took 319 ms [2021-11-21 00:24:03,129 INFO L354 Elim1Store]: treesize reduction 520, result has 72.0 percent of original size [2021-11-21 00:24:03,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 826 treesize of output 1708 [2021-11-21 00:24:05,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:05,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:05,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:05,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:05,893 INFO L354 Elim1Store]: treesize reduction 360, result has 68.8 percent of original size [2021-11-21 00:24:05,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 805 treesize of output 1161 [2021-11-21 00:24:06,463 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:24:07,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:07,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:07,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:07,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:07,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:07,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:07,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:07,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:07,295 INFO L244 Elim1Store]: Index analysis took 159 ms [2021-11-21 00:24:07,519 INFO L354 Elim1Store]: treesize reduction 4, result has 98.2 percent of original size [2021-11-21 00:24:07,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 805 treesize of output 583 [2021-11-21 00:24:07,847 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:24:10,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:10,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:10,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:10,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:10,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:10,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:10,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:11,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:11,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:11,045 INFO L244 Elim1Store]: Index analysis took 176 ms [2021-11-21 00:24:11,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 817 treesize of output 369 [2021-11-21 00:24:11,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:11,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:11,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:11,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:11,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:11,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 796 treesize of output 366 [2021-11-21 00:24:12,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:12,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:12,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:12,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:12,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:12,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:12,921 INFO L244 Elim1Store]: Index analysis took 132 ms [2021-11-21 00:24:12,937 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-11-21 00:24:12,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 817 treesize of output 369 [2021-11-21 00:24:14,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:14,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:14,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:14,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:14,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:14,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:14,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:14,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:14,481 INFO L244 Elim1Store]: Index analysis took 128 ms [2021-11-21 00:24:14,611 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:24:14,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 749 treesize of output 559 [2021-11-21 00:24:14,939 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:24:15,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:15,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:15,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:24:15,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:15,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:15,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 728 treesize of output 366 [2021-11-21 00:24:15,803 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 00:24:17,866 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-11-21 00:24:17,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1660 treesize of output 1668 [2021-11-21 00:24:18,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:18,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 41 [2021-11-21 00:24:19,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:19,623 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:24:19,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 13 [2021-11-21 00:24:20,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:20,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:20,186 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-21 00:24:20,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 16 [2021-11-21 00:24:20,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:20,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:20,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:24:20,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 47 [2021-11-21 00:24:29,047 INFO L190 IndexEqualityManager]: detected not equals via solver