./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test27-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test27-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7 --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 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:59:29,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:59:29,385 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:59:29,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:59:29,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:59:29,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:59:29,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:59:29,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:59:29,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:59:29,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:59:29,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:59:29,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:59:29,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:59:29,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:59:29,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:59:29,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:59:29,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:59:29,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:59:29,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:59:29,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:59:29,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:59:29,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:59:29,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:59:29,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:59:29,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:59:29,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:59:29,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:59:29,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:59:29,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:59:29,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:59:29,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:59:29,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:59:29,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:59:29,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:59:29,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:59:29,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:59:29,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:59:29,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:59:29,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:59:29,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:59:29,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:59:29,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 18:59:29,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:59:29,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:59:29,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:59:29,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:59:29,509 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:59:29,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:59:29,510 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:59:29,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:59:29,510 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:59:29,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:59:29,511 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:59:29,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:59:29,511 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:59:29,511 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:59:29,512 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:59:29,512 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:59:29,512 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:59:29,512 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:59:29,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:59:29,513 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 18:59:29,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:59:29,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 18:59:29,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:59:29,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:59:29,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:59:29,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:59:29,515 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 18:59:29,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:59:29,515 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:59:29,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:59:29,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:59:29,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:59:29,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:59:29,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:59:29,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:59:29,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:59:29,517 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:59:29,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:59:29,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:59:29,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:59:29,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:59:29,518 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_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78863f43fa37191b47f0d738bb1bc2018c82b38cb68dad85c455cdbd7fd69aa4 [2021-11-25 18:59:29,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:59:29,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:59:29,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:59:29,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:59:29,801 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:59:29,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/ldv-regression/test27-1.c [2021-11-25 18:59:29,874 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/data/a5c79a73e/679a01358f7f40c09de9253c89bb6cda/FLAGf263ffa2e [2021-11-25 18:59:30,367 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:59:30,368 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/sv-benchmarks/c/ldv-regression/test27-1.c [2021-11-25 18:59:30,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/data/a5c79a73e/679a01358f7f40c09de9253c89bb6cda/FLAGf263ffa2e [2021-11-25 18:59:30,728 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/data/a5c79a73e/679a01358f7f40c09de9253c89bb6cda [2021-11-25 18:59:30,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:59:30,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:59:30,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:30,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:59:30,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:59:30,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:30,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c92cf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30, skipping insertion in model container [2021-11-25 18:59:30,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:30,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:59:30,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:59:30,934 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_2c053588-7d94-4549-a3ca-db32b77c5a15/sv-benchmarks/c/ldv-regression/test27-1.c[1154,1167] [2021-11-25 18:59:30,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:30,944 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:59:30,965 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_2c053588-7d94-4549-a3ca-db32b77c5a15/sv-benchmarks/c/ldv-regression/test27-1.c[1154,1167] [2021-11-25 18:59:30,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:59:30,980 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:59:30,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30 WrapperNode [2021-11-25 18:59:30,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:59:30,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:30,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:59:30,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:59:30,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:30,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,020 INFO L137 Inliner]: procedures = 16, calls = 42, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 113 [2021-11-25 18:59:31,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:59:31,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:59:31,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:59:31,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:59:31,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:59:31,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:59:31,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:59:31,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:59:31,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (1/1) ... [2021-11-25 18:59:31,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:59:31,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:31,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:59:31,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:59:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:59:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:59:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:59:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:59:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:59:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:59:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:59:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:59:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:59:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:59:31,203 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:59:31,205 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:59:31,455 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:59:31,487 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:59:31,488 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 18:59:31,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:59:31 BoogieIcfgContainer [2021-11-25 18:59:31,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:59:31,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:59:31,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:59:31,499 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:59:31,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:59:30" (1/3) ... [2021-11-25 18:59:31,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f84f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:59:31, skipping insertion in model container [2021-11-25 18:59:31,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:59:30" (2/3) ... [2021-11-25 18:59:31,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f84f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:59:31, skipping insertion in model container [2021-11-25 18:59:31,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:59:31" (3/3) ... [2021-11-25 18:59:31,503 INFO L111 eAbstractionObserver]: Analyzing ICFG test27-1.c [2021-11-25 18:59:31,513 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:59:31,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 18:59:31,563 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:59:31,571 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 [2021-11-25 18:59:31,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 18:59:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 18:59:31,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:31,592 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:31,592 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:31,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:31,598 INFO L85 PathProgramCache]: Analyzing trace with hash 994857001, now seen corresponding path program 1 times [2021-11-25 18:59:31,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:31,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241800105] [2021-11-25 18:59:31,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:31,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:31,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:31,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:31,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241800105] [2021-11-25 18:59:31,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241800105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:31,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:59:31,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:59:31,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516207560] [2021-11-25 18:59:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:31,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 18:59:31,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:31,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 18:59:31,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:31,970 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:32,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:32,020 INFO L93 Difference]: Finished difference Result 25 states and 35 transitions. [2021-11-25 18:59:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 18:59:32,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 18:59:32,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:32,030 INFO L225 Difference]: With dead ends: 25 [2021-11-25 18:59:32,030 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 18:59:32,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 18:59:32,039 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:32,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:59:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 18:59:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-25 18:59:32,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:32,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-11-25 18:59:32,078 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2021-11-25 18:59:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:32,079 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-11-25 18:59:32,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2021-11-25 18:59:32,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 18:59:32,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:32,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:32,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 18:59:32,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:32,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1531794660, now seen corresponding path program 1 times [2021-11-25 18:59:32,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:32,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183897449] [2021-11-25 18:59:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:32,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:32,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:32,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183897449] [2021-11-25 18:59:32,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183897449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:32,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888892406] [2021-11-25 18:59:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:32,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:32,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:32,192 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:32,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:59:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:32,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:59:32,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:32,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:59:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 18:59:32,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888892406] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:59:32,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1073884903] [2021-11-25 18:59:32,505 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:59:32,505 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:59:32,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:59:32,518 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:59:32,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:59:32,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:32,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:32,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:32,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:32,958 INFO L354 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2021-11-25 18:59:32,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2021-11-25 18:59:33,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 26 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 45 [2021-11-25 18:59:33,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 18:59:33,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 18:59:33,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-25 18:59:33,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:33,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:33,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:33,713 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-25 18:59:33,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 479 treesize of output 443 [2021-11-25 18:59:33,783 INFO L354 Elim1Store]: treesize reduction 44, result has 13.7 percent of original size [2021-11-25 18:59:33,785 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 445 treesize of output 423 [2021-11-25 18:59:33,839 INFO L354 Elim1Store]: treesize reduction 44, result has 13.7 percent of original size [2021-11-25 18:59:33,840 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 445 treesize of output 423 [2021-11-25 18:59:33,901 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:59:33,902 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 436 treesize of output 441 [2021-11-25 18:59:33,944 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:59:33,944 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 432 treesize of output 437 [2021-11-25 18:59:34,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:34,924 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:34,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:34,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:34,958 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:34,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:34,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:34,989 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:34,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:35,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,066 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-25 18:59:35,070 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 1 case distinctions, treesize of input 187 treesize of output 50 [2021-11-25 18:59:35,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,124 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:59:35,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 42 [2021-11-25 18:59:35,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 11 [2021-11-25 18:59:35,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:35,181 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 53 treesize of output 27 [2021-11-25 18:59:35,346 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:59:35,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1073884903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:59:35,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:59:35,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 3, 3] total 11 [2021-11-25 18:59:35,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575399022] [2021-11-25 18:59:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:59:35,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:59:35,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:35,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:59:35,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:35,728 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:35,775 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-25 18:59:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:59:35,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 18:59:35,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:35,777 INFO L225 Difference]: With dead ends: 17 [2021-11-25 18:59:35,777 INFO L226 Difference]: Without dead ends: 13 [2021-11-25 18:59:35,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:59:35,780 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:35,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2021-11-25 18:59:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-25 18:59:35,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-25 18:59:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:35,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-25 18:59:35,793 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2021-11-25 18:59:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:35,793 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-25 18:59:35,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-25 18:59:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-25 18:59:35,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:35,794 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:35,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:35,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:35,995 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:35,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1089883201, now seen corresponding path program 1 times [2021-11-25 18:59:35,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:35,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669794180] [2021-11-25 18:59:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:35,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:59:36,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:36,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669794180] [2021-11-25 18:59:36,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669794180] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:36,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85190976] [2021-11-25 18:59:36,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:36,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:36,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:36,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:36,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:59:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:36,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:59:36,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:36,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:59:36,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:59:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:59:36,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85190976] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:59:36,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [530745990] [2021-11-25 18:59:36,287 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:59:36,288 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:59:36,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:59:36,288 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:59:36,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:59:36,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,496 INFO L354 Elim1Store]: treesize reduction 195, result has 25.3 percent of original size [2021-11-25 18:59:36,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 85 [2021-11-25 18:59:36,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:36,704 INFO L354 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2021-11-25 18:59:36,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2021-11-25 18:59:36,754 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:36,768 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:36,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:36,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:36,792 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:36,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:36,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:36,829 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:36,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:36,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:36,884 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:36,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:36,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:36,909 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:36,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:36,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:36,951 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:36,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:37,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,026 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:59:37,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 42 [2021-11-25 18:59:37,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,087 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-25 18:59:37,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 50 [2021-11-25 18:59:37,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 11 [2021-11-25 18:59:37,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:37,146 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 53 treesize of output 27 [2021-11-25 18:59:37,341 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:59:37,940 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '253#(and (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.offset|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= |#NULL.base| 0) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4))))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) 4)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 18:59:37,941 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:59:37,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:59:37,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-11-25 18:59:37,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260790928] [2021-11-25 18:59:37,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:59:37,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:59:37,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:37,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:59:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:59:37,946 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:37,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:37,978 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-11-25 18:59:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:59:37,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-25 18:59:37,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:37,979 INFO L225 Difference]: With dead ends: 26 [2021-11-25 18:59:37,979 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 18:59:37,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-25 18:59:37,983 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:37,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:59:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 18:59:37,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-25 18:59:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-25 18:59:37,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2021-11-25 18:59:37,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:37,995 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-25 18:59:37,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-25 18:59:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-25 18:59:37,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:37,996 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:38,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:38,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:38,209 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:38,210 INFO L85 PathProgramCache]: Analyzing trace with hash -911837772, now seen corresponding path program 2 times [2021-11-25 18:59:38,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:38,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130238114] [2021-11-25 18:59:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:38,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:38,390 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-25 18:59:38,390 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:38,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130238114] [2021-11-25 18:59:38,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130238114] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:38,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667671674] [2021-11-25 18:59:38,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:59:38,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:38,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:38,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:38,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:59:38,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 18:59:38,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:59:38,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 18:59:38,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:38,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-25 18:59:38,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:38,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:38,670 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-25 18:59:38,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 77 [2021-11-25 18:59:38,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:38,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:38,710 INFO L354 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2021-11-25 18:59:38,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 81 [2021-11-25 18:59:38,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2021-11-25 18:59:38,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2021-11-25 18:59:38,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:59:38,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:59:38,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:59:38,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-11-25 18:59:38,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:59:38,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:59:38,965 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 24 treesize of output 18 [2021-11-25 18:59:38,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 18:59:39,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:39,088 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 6 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 105 [2021-11-25 18:59:39,118 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-11-25 18:59:39,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 97 treesize of output 79 [2021-11-25 18:59:39,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-25 18:59:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:59:39,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:59:39,293 INFO L354 Elim1Store]: treesize reduction 4, result has 93.0 percent of original size [2021-11-25 18:59:39,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2021-11-25 18:59:39,329 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-25 18:59:39,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667671674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:59:39,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [453683506] [2021-11-25 18:59:39,332 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:59:39,333 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:59:39,333 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:59:39,333 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:59:39,333 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:59:39,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,500 INFO L354 Elim1Store]: treesize reduction 195, result has 25.3 percent of original size [2021-11-25 18:59:39,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 85 [2021-11-25 18:59:39,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:39,725 INFO L354 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2021-11-25 18:59:39,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2021-11-25 18:59:39,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:39,778 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:39,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:39,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:39,818 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:39,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:39,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:39,849 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:39,849 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 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:39,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:39,920 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:39,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:39,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:39,947 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:39,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:39,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:39,973 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:39,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:40,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:40,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,035 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:59:40,035 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 1 case distinctions, treesize of input 165 treesize of output 42 [2021-11-25 18:59:40,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,058 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 39 treesize of output 11 [2021-11-25 18:59:40,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,079 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 53 treesize of output 27 [2021-11-25 18:59:40,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:40,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:40,128 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-25 18:59:40,128 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 1 case distinctions, treesize of input 187 treesize of output 50 [2021-11-25 18:59:40,315 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:59:40,982 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '425#(and (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.offset|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= |#NULL.base| 0) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4))))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) 4)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 18:59:40,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:59:40,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:59:40,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-11-25 18:59:40,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457148103] [2021-11-25 18:59:40,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:59:40,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-25 18:59:40,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:40,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-25 18:59:40,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-25 18:59:40,985 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:41,352 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2021-11-25 18:59:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:59:41,352 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-25 18:59:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:41,353 INFO L225 Difference]: With dead ends: 33 [2021-11-25 18:59:41,353 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 18:59:41,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=192, Invalid=1214, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 18:59:41,355 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 17 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:41,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 17 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:59:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 18:59:41,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-25 18:59:41,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:41,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2021-11-25 18:59:41,362 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2021-11-25 18:59:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:41,362 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2021-11-25 18:59:41,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0) internal successors, (32), 16 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:41,363 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2021-11-25 18:59:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-25 18:59:41,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:41,364 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:41,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:41,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:41,577 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:41,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:41,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1639260912, now seen corresponding path program 3 times [2021-11-25 18:59:41,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:41,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116779734] [2021-11-25 18:59:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:41,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 18:59:41,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:41,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116779734] [2021-11-25 18:59:41,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116779734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:41,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017021962] [2021-11-25 18:59:41,724 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:59:41,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:41,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:41,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:41,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:59:41,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:59:41,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:59:41,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-25 18:59:41,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:41,984 INFO L354 Elim1Store]: treesize reduction 129, result has 33.2 percent of original size [2021-11-25 18:59:41,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 188 [2021-11-25 18:59:42,064 INFO L354 Elim1Store]: treesize reduction 117, result has 35.4 percent of original size [2021-11-25 18:59:42,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 130 [2021-11-25 18:59:42,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:59:42,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:59:42,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:59:42,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:59:42,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 18:59:42,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 18:59:42,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:42,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 18:59:42,418 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 7 treesize of output 3 [2021-11-25 18:59:42,532 INFO L354 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2021-11-25 18:59:42,532 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 2 case distinctions, treesize of input 34 treesize of output 36 [2021-11-25 18:59:42,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:59:42,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:59:42,699 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-25 18:59:42,699 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 1 case distinctions, treesize of input 24 treesize of output 18 [2021-11-25 18:59:42,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 18:59:42,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:42,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 18:59:42,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 18:59:42,847 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 9 treesize of output 5 [2021-11-25 18:59:42,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-25 18:59:42,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 18:59:43,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:43,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 33 [2021-11-25 18:59:43,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 18:59:43,106 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-25 18:59:43,107 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 2 case distinctions, treesize of input 55 treesize of output 47 [2021-11-25 18:59:43,114 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:59:43,161 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:43,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 46 [2021-11-25 18:59:43,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:59:43,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:59:43,276 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:43,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 164 treesize of output 121 [2021-11-25 18:59:43,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:59:43,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 109 treesize of output 103 [2021-11-25 18:59:43,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-11-25 18:59:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:59:43,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:59:43,947 INFO L354 Elim1Store]: treesize reduction 4, result has 93.0 percent of original size [2021-11-25 18:59:43,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2021-11-25 18:59:43,987 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-25 18:59:43,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017021962] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:59:43,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2000339909] [2021-11-25 18:59:43,990 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:59:43,990 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:59:43,991 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:59:43,991 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:59:43,991 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:59:44,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,157 INFO L354 Elim1Store]: treesize reduction 195, result has 25.3 percent of original size [2021-11-25 18:59:44,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 85 [2021-11-25 18:59:44,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,331 INFO L354 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2021-11-25 18:59:44,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2021-11-25 18:59:44,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,379 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:44,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:44,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,418 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:44,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:44,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,445 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:44,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:44,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,485 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:44,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:44,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,516 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:44,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:44,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,537 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:44,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:44,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,579 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 39 treesize of output 11 [2021-11-25 18:59:44,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,596 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 53 treesize of output 27 [2021-11-25 18:59:44,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,643 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-25 18:59:44,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 187 treesize of output 50 [2021-11-25 18:59:44,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:44,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:44,695 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:59:44,695 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 1 case distinctions, treesize of input 165 treesize of output 42 [2021-11-25 18:59:44,879 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:59:46,093 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '695#(and (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= 0 |#NULL.base|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#a~0#1.offset|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.offset|) (<= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (<= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (<= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (<= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= |#NULL.base| 0) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4))))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) 4)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (<= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-25 18:59:46,093 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:59:46,093 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:59:46,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 22 [2021-11-25 18:59:46,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741405336] [2021-11-25 18:59:46,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:59:46,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-25 18:59:46,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-25 18:59:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2021-11-25 18:59:46,095 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:46,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:46,395 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2021-11-25 18:59:46,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 18:59:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-25 18:59:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:46,396 INFO L225 Difference]: With dead ends: 52 [2021-11-25 18:59:46,396 INFO L226 Difference]: Without dead ends: 36 [2021-11-25 18:59:46,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2021-11-25 18:59:46,398 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:46,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 26 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2021-11-25 18:59:46,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-25 18:59:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-25 18:59:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:46,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-11-25 18:59:46,405 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 22 [2021-11-25 18:59:46,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:46,405 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-11-25 18:59:46,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 22 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:46,407 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-11-25 18:59:46,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-25 18:59:46,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:46,408 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:46,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:46,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:46,627 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:46,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:46,627 INFO L85 PathProgramCache]: Analyzing trace with hash -848017977, now seen corresponding path program 4 times [2021-11-25 18:59:46,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:46,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50566000] [2021-11-25 18:59:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:46,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-25 18:59:46,777 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:59:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50566000] [2021-11-25 18:59:46,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50566000] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:59:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964583018] [2021-11-25 18:59:46,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 18:59:46,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:59:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:59:46,778 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:59:46,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:59:46,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:59:46,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:59:46,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:59:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-25 18:59:47,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:59:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-11-25 18:59:47,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964583018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:59:47,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [999482268] [2021-11-25 18:59:47,096 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-25 18:59:47,096 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:59:47,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:59:47,097 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:59:47,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:59:47,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,294 INFO L354 Elim1Store]: treesize reduction 315, result has 15.5 percent of original size [2021-11-25 18:59:47,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 14 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 80 treesize of output 121 [2021-11-25 18:59:47,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 26 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 45 [2021-11-25 18:59:47,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 18:59:47,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-25 18:59:47,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 14 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-25 18:59:47,600 INFO L354 Elim1Store]: treesize reduction 44, result has 13.7 percent of original size [2021-11-25 18:59:47,600 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 453 treesize of output 431 [2021-11-25 18:59:47,654 INFO L354 Elim1Store]: treesize reduction 44, result has 13.7 percent of original size [2021-11-25 18:59:47,655 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 453 treesize of output 431 [2021-11-25 18:59:47,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:47,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:47,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:47,729 INFO L354 Elim1Store]: treesize reduction 200, result has 14.2 percent of original size [2021-11-25 18:59:47,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 479 treesize of output 443 [2021-11-25 18:59:47,770 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:59:47,771 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 436 treesize of output 441 [2021-11-25 18:59:47,803 INFO L354 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2021-11-25 18:59:47,804 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 432 treesize of output 437 [2021-11-25 18:59:48,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:48,258 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:48,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:48,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:48,280 INFO L354 Elim1Store]: treesize reduction 27, result has 37.2 percent of original size [2021-11-25 18:59:48,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 16 [2021-11-25 18:59:48,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 18:59:48,306 INFO L354 Elim1Store]: treesize reduction 18, result has 47.1 percent of original size [2021-11-25 18:59:48,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 18:59:48,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,355 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 18:59:48,356 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 1 case distinctions, treesize of input 165 treesize of output 42 [2021-11-25 18:59:48,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,404 INFO L354 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2021-11-25 18:59:48,404 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 1 case distinctions, treesize of input 187 treesize of output 50 [2021-11-25 18:59:48,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,430 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 39 treesize of output 11 [2021-11-25 18:59:48,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:59:48,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2021-11-25 18:59:48,587 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 18:59:48,964 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1075#(and (= |ULTIMATE.start_main_~#cont~0#1.offset| 0) (= |ULTIMATE.start_check_~pc#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (= |ULTIMATE.start_main_~#dummies~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#dummies~0#1.base|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= 0 |ULTIMATE.start_main_~#dummy~0#1.base|) (<= 10 |ULTIMATE.start_main_~j~0#1|) (= |ULTIMATE.start_check_~pc#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#cont~0#1.base|) (= |ULTIMATE.start_main_~#cont~0#1.base| |ULTIMATE.start_check_#in~pc#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_main_~#cont~0#1.offset| |ULTIMATE.start_check_#in~pc#1.offset|) (= (ite (= (select (select |#memory_int| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4))))) (+ (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) (select (select |#memory_$Pointer$.offset| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|)) (+ (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_check_~pc#1.base|) |ULTIMATE.start_check_~pc#1.offset|) (* |ULTIMATE.start_check_~i#1| 4)))) 4)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_~#dummy~0#1.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 18:59:48,964 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 18:59:48,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-25 18:59:48,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-11-25 18:59:48,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587985135] [2021-11-25 18:59:48,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-25 18:59:48,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 18:59:48,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:59:48,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 18:59:48,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:59:48,966 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:59:49,007 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2021-11-25 18:59:49,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:59:49,007 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-25 18:59:49,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:59:49,008 INFO L225 Difference]: With dead ends: 68 [2021-11-25 18:59:49,008 INFO L226 Difference]: Without dead ends: 40 [2021-11-25 18:59:49,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:59:49,009 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:59:49,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:59:49,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-25 18:59:49,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-25 18:59:49,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-11-25 18:59:49,017 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2021-11-25 18:59:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:59:49,017 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-11-25 18:59:49,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 18:59:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-11-25 18:59:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-25 18:59:49,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:59:49,019 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:59:49,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:59:49,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-25 18:59:49,220 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:59:49,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:59:49,220 INFO L85 PathProgramCache]: Analyzing trace with hash -8036217, now seen corresponding path program 5 times [2021-11-25 18:59:49,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:59:49,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484408959] [2021-11-25 18:59:49,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:59:49,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:59:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:00:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 1 proven. 164 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:00:47,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:00:47,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484408959] [2021-11-25 19:00:47,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484408959] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:00:47,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017795600] [2021-11-25 19:00:47,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:00:47,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:00:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:00:47,301 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:00:47,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c053588-7d94-4549-a3ca-db32b77c5a15/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:00:47,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 19:00:47,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:00:47,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-25 19:00:47,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:00:47,918 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-25 19:00:47,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 34 [2021-11-25 19:00:48,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:48,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:48,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:48,199 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 46 [2021-11-25 19:00:48,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 19:00:48,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:48,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2021-11-25 19:00:48,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:00:48,242 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2021-11-25 19:00:48,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 30 [2021-11-25 19:00:48,270 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 46 [2021-11-25 19:00:48,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-25 19:00:48,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 61 [2021-11-25 19:00:48,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2021-11-25 19:00:48,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 47 [2021-11-25 19:00:48,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 16 [2021-11-25 19:00:48,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2021-11-25 19:00:48,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-25 19:00:48,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2021-11-25 19:00:50,561 INFO L354 Elim1Store]: treesize reduction 159, result has 5.9 percent of original size [2021-11-25 19:00:50,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 12 new quantified variables, introduced 13 case distinctions, treesize of input 521 treesize of output 296 [2021-11-25 19:00:50,595 INFO L354 Elim1Store]: treesize reduction 94, result has 10.5 percent of original size [2021-11-25 19:00:50,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 231 treesize of output 104 [2021-11-25 19:00:50,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-11-25 19:00:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-25 19:00:50,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:00:52,661 INFO L354 Elim1Store]: treesize reduction 44, result has 54.6 percent of original size [2021-11-25 19:00:52,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 7508 treesize of output 6516 [2021-11-25 19:00:52,901 INFO L354 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2021-11-25 19:00:52,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 12384 treesize of output 9964 [2021-11-25 19:00:54,658 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:00:54,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 36 case distinctions, treesize of input 163556 treesize of output 159548 [2021-11-25 19:00:55,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:00:55,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 159104 treesize of output 145867 [2021-11-25 19:01:01,003 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:01,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 1164468 treesize of output 1131038 [2021-11-25 19:01:11,018 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:01:11,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1134768 treesize of output 974652 [2021-11-25 19:01:21,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:22,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:22,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:22,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:22,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:22,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:22,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:23,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:23,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:23,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:23,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:01:23,772 INFO L244 Elim1Store]: Index analysis took 2042 ms