./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl --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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:06:20,471 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:06:20,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:06:20,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:06:20,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:06:20,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:06:20,543 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:06:20,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:06:20,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:06:20,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:06:20,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:06:20,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:06:20,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:06:20,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:06:20,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:06:20,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:06:20,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:06:20,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:06:20,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:06:20,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:06:20,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:06:20,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:06:20,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:06:20,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:06:20,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:06:20,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:06:20,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:06:20,605 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:06:20,606 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:06:20,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:06:20,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:06:20,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:06:20,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:06:20,613 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:06:20,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:06:20,614 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:06:20,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:06:20,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:06:20,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:06:20,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:06:20,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:06:20,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:06:20,665 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:06:20,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:06:20,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:06:20,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:06:20,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:06:20,668 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:06:20,668 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:06:20,668 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:06:20,669 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:06:20,669 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:06:20,670 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:06:20,670 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:06:20,670 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:06:20,671 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:06:20,671 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:06:20,671 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:06:20,672 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:06:20,672 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:06:20,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:06:20,673 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:06:20,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:06:20,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:06:20,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:06:20,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:06:20,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:06:20,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:06:20,676 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:06:20,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:06:20,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:06:20,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:06:20,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:06:20,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:06:20,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:20,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:06:20,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:06:20,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:06:20,679 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:06:20,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:06:20,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:06:20,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:06:20,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:06:20,680 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2021-11-23 17:06:21,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:06:21,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:06:21,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:06:21,053 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:06:21,055 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:06:21,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-23 17:06:21,134 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/1587d5eea/c4a064a70f0044bb91576e259c6e509e/FLAGf94795a59 [2021-11-23 17:06:21,792 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:06:21,793 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-23 17:06:21,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/1587d5eea/c4a064a70f0044bb91576e259c6e509e/FLAGf94795a59 [2021-11-23 17:06:22,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/1587d5eea/c4a064a70f0044bb91576e259c6e509e [2021-11-23 17:06:22,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:06:22,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:06:22,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:22,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:06:22,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:06:22,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721ff9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22, skipping insertion in model container [2021-11-23 17:06:22,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:06:22,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:06:22,444 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-23 17:06:22,447 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-23 17:06:22,449 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-23 17:06:22,450 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-23 17:06:22,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:22,463 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:06:22,505 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-23 17:06:22,507 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-23 17:06:22,508 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-23 17:06:22,509 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-23 17:06:22,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:22,545 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:06:22,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22 WrapperNode [2021-11-23 17:06:22,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:22,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:22,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:06:22,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:06:22,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,595 INFO L137 Inliner]: procedures = 119, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 122 [2021-11-23 17:06:22,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:22,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:06:22,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:06:22,596 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:06:22,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:06:22,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:06:22,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:06:22,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:06:22,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:22" (1/1) ... [2021-11-23 17:06:22,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:22,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:22,679 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:06:22,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:06:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:06:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:06:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:06:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:06:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:06:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:06:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:06:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:06:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:06:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:06:22,835 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:06:22,837 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:06:23,286 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:06:23,326 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:06:23,332 INFO L158 Benchmark]: Toolchain (without parser) took 1296.97ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.5MB in the beginning and 46.7MB in the end (delta: -2.1MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-11-23 17:06:23,336 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 81.8MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:06:23,337 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.47ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.3MB in the beginning and 66.3MB in the end (delta: -22.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 17:06:23,338 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.94ms. Allocated memory is still 98.6MB. Free memory was 66.3MB in the beginning and 64.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 17:06:23,340 INFO L158 Benchmark]: Boogie Preprocessor took 35.43ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 62.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:06:23,343 INFO L158 Benchmark]: RCFGBuilder took 697.36ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 46.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 17:06:23,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 81.8MB. Free memory is still 62.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 510.47ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 44.3MB in the beginning and 66.3MB in the end (delta: -22.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.94ms. Allocated memory is still 98.6MB. Free memory was 66.3MB in the beginning and 64.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.43ms. Allocated memory is still 98.6MB. Free memory was 64.2MB in the beginning and 62.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 697.36ms. Allocated memory is still 98.6MB. Free memory was 62.6MB in the beginning and 46.7MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:06:23,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl --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 b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:06:26,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:06:26,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:06:26,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:06:26,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:06:26,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:06:26,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:06:26,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:06:26,124 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:06:26,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:06:26,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:06:26,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:06:26,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:06:26,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:06:26,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:06:26,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:06:26,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:06:26,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:06:26,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:06:26,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:06:26,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:06:26,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:06:26,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:06:26,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:06:26,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:06:26,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:06:26,175 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:06:26,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:06:26,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:06:26,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:06:26,179 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:06:26,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:06:26,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:06:26,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:06:26,191 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:06:26,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:06:26,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:06:26,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:06:26,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:06:26,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:06:26,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:06:26,197 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:06:26,228 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:06:26,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:06:26,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:06:26,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:06:26,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:06:26,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:06:26,231 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:06:26,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:06:26,231 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:06:26,231 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:06:26,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:06:26,232 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:06:26,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:06:26,233 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:06:26,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:06:26,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:06:26,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:06:26,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:06:26,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:06:26,235 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:06:26,235 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:06:26,236 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:06:26,236 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:06:26,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:06:26,236 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:06:26,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:06:26,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:06:26,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:06:26,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:06:26,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:26,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:06:26,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:06:26,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:06:26,239 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:06:26,240 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:26,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:06:26,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:06:26,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:06:26,241 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b05b18c0458ef705f828769f88cc2a590589ce4d5c3f0e48f99be90a949f7ed4 [2021-11-23 17:06:26,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:06:26,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:06:26,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:06:26,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:06:26,755 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:06:26,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-23 17:06:26,834 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/7588063b4/e6df4946a73e4ec19e29a74d725d9d8e/FLAGc7f815a24 [2021-11-23 17:06:27,586 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:06:27,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i [2021-11-23 17:06:27,612 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/7588063b4/e6df4946a73e4ec19e29a74d725d9d8e/FLAGc7f815a24 [2021-11-23 17:06:27,851 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/data/7588063b4/e6df4946a73e4ec19e29a74d725d9d8e [2021-11-23 17:06:27,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:06:27,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:06:27,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:27,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:06:27,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:06:27,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:27" (1/1) ... [2021-11-23 17:06:27,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5e1817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:27, skipping insertion in model container [2021-11-23 17:06:27,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:06:27" (1/1) ... [2021-11-23 17:06:27,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:06:27,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:06:28,324 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-23 17:06:28,329 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-23 17:06:28,331 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-23 17:06:28,332 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-23 17:06:28,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:28,353 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:06:28,407 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22534,22547] [2021-11-23 17:06:28,408 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22606,22619] [2021-11-23 17:06:28,410 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22746,22759] [2021-11-23 17:06:28,412 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_ed5b6910-3032-4e73-918e-a6ce0e517b8b/sv-benchmarks/c/forester-heap/sll-rb-sentinel-1.i[22820,22833] [2021-11-23 17:06:28,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:06:28,460 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:06:28,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28 WrapperNode [2021-11-23 17:06:28,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:06:28,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:28,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:06:28,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:06:28,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,551 INFO L137 Inliner]: procedures = 122, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 121 [2021-11-23 17:06:28,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:06:28,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:06:28,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:06:28,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:06:28,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:06:28,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:06:28,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:06:28,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:06:28,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (1/1) ... [2021-11-23 17:06:28,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:06:28,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:28,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:06:28,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:06:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:06:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:06:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:06:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:06:28,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:06:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:06:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:06:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:06:28,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:06:28,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:06:28,852 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:06:28,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:06:29,412 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:06:29,420 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:06:29,420 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 17:06:29,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:06:29 BoogieIcfgContainer [2021-11-23 17:06:29,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:06:29,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:06:29,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:06:29,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:06:29,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:06:27" (1/3) ... [2021-11-23 17:06:29,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122ae80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:06:29, skipping insertion in model container [2021-11-23 17:06:29,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:06:28" (2/3) ... [2021-11-23 17:06:29,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122ae80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:06:29, skipping insertion in model container [2021-11-23 17:06:29,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:06:29" (3/3) ... [2021-11-23 17:06:29,444 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-1.i [2021-11-23 17:06:29,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:06:29,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 17:06:29,527 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:06:29,535 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 17:06:29,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 17:06:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:06:29,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:29,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:06:29,563 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:29,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:29,570 INFO L85 PathProgramCache]: Analyzing trace with hash 889937798, now seen corresponding path program 1 times [2021-11-23 17:06:29,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:29,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672047790] [2021-11-23 17:06:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:29,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:29,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:29,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:29,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:06:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:29,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 17:06:29,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:29,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:06:29,819 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:29,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672047790] [2021-11-23 17:06:29,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672047790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:06:29,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:06:29,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:06:29,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295419811] [2021-11-23 17:06:29,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:06:29,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 17:06:29,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:29,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 17:06:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:06:29,895 INFO L87 Difference]: Start difference. First operand has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 17:06:29,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:29,924 INFO L93 Difference]: Finished difference Result 60 states and 97 transitions. [2021-11-23 17:06:29,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 17:06:29,927 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-23 17:06:29,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:29,938 INFO L225 Difference]: With dead ends: 60 [2021-11-23 17:06:29,939 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 17:06:29,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:06:29,951 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:29,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:06:29,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 17:06:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-23 17:06:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 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) [2021-11-23 17:06:29,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-23 17:06:30,000 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 6 [2021-11-23 17:06:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:30,000 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-23 17:06:30,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-23 17:06:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-23 17:06:30,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 17:06:30,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:30,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 17:06:30,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:30,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:06:30,217 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 889639888, now seen corresponding path program 1 times [2021-11-23 17:06:30,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:30,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196090250] [2021-11-23 17:06:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:30,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:30,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:30,228 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:30,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:06:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:30,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:06:30,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:30,560 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 24 treesize of output 22 [2021-11-23 17:06:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:30,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:06:30,646 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:30,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196090250] [2021-11-23 17:06:30,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196090250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:06:30,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:06:30,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:06:30,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762771333] [2021-11-23 17:06:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:06:30,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:06:30,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:30,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:06:30,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:06:30,660 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-23 17:06:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:30,978 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-23 17:06:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:06:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-11-23 17:06:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:30,981 INFO L225 Difference]: With dead ends: 31 [2021-11-23 17:06:30,982 INFO L226 Difference]: Without dead ends: 29 [2021-11-23 17:06:30,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:06:30,984 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 36 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:30,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 27 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 17:06:30,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-23 17:06:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-23 17:06:30,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 states have internal predecessors, (27), 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) [2021-11-23 17:06:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-23 17:06:30,998 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 6 [2021-11-23 17:06:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:30,998 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-23 17:06:30,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-11-23 17:06:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-23 17:06:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 17:06:31,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:31,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:31,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:31,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:06:31,213 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:31,214 INFO L85 PathProgramCache]: Analyzing trace with hash -977335784, now seen corresponding path program 1 times [2021-11-23 17:06:31,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:31,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378700529] [2021-11-23 17:06:31,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:31,215 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:31,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:31,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:31,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:06:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:31,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 17:06:31,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:31,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:31,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:31,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:06:31,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:31,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378700529] [2021-11-23 17:06:31,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378700529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:06:31,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:06:31,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 17:06:31,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835609282] [2021-11-23 17:06:31,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:06:31,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:06:31,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:06:31,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:06:31,537 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:32,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:32,144 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-11-23 17:06:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:06:32,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 17:06:32,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:32,147 INFO L225 Difference]: With dead ends: 53 [2021-11-23 17:06:32,147 INFO L226 Difference]: Without dead ends: 51 [2021-11-23 17:06:32,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:06:32,149 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 26 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:32,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 62 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 17:06:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-23 17:06:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32. [2021-11-23 17:06:32,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 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) [2021-11-23 17:06:32,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-11-23 17:06:32,158 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 9 [2021-11-23 17:06:32,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:32,158 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-11-23 17:06:32,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:32,159 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-11-23 17:06:32,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 17:06:32,160 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:32,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:32,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-23 17:06:32,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:06:32,371 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash -822388269, now seen corresponding path program 1 times [2021-11-23 17:06:32,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:32,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123766820] [2021-11-23 17:06:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:32,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:32,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:32,378 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:32,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:06:32,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:32,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 17:06:32,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:32,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:32,768 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:32,770 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:32,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:32,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:32,896 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:32,897 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 16 treesize of output 22 [2021-11-23 17:06:32,924 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 3 [2021-11-23 17:06:32,967 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:32,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:06:33,148 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:06:33,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:06:33,166 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 [2021-11-23 17:06:33,201 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 3 [2021-11-23 17:06:33,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:33,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:33,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:33,492 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:33,492 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 18 treesize of output 22 [2021-11-23 17:06:33,526 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_176 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_27| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_176) |v_ULTIMATE.start_main_~end~0#1.base_27| v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:33,724 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_173 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_28| (_ BitVec 32)) (v_ArrVal_176 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_27| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_28|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_173)) |v_ULTIMATE.start_main_~end~0#1.base_28| v_ArrVal_176) |v_ULTIMATE.start_main_~end~0#1.base_27| v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:33,806 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:33,806 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-11-23 17:06:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:06:33,811 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:33,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123766820] [2021-11-23 17:06:33,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123766820] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:33,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2144677621] [2021-11-23 17:06:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:33,816 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:33,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:06:33,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:06:33,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-23 17:06:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:34,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 17:06:34,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:34,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:34,159 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:34,160 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:34,227 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:34,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-23 17:06:34,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:34,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:34,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:34,394 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:06:34,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:06:34,407 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 [2021-11-23 17:06:34,445 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 17:06:34,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:34,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:34,593 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:34,594 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 18 treesize of output 22 [2021-11-23 17:06:34,618 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_264 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_264) |v_ULTIMATE.start_main_~end~0#1.base_33| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:34,765 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_260 (_ BitVec 32)) (v_ArrVal_264 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_34| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_260)) |v_ULTIMATE.start_main_~end~0#1.base_34| v_ArrVal_264) |v_ULTIMATE.start_main_~end~0#1.base_33| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_34|)))))) is different from false [2021-11-23 17:06:34,825 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:34,826 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-11-23 17:06:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:06:34,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2144677621] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:34,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141073642] [2021-11-23 17:06:34,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:34,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:06:34,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:34,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:06:34,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 17:06:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:34,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 17:06:34,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:35,037 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:35,038 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:35,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:35,121 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:35,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:06:35,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:35,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:35,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:35,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:35,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:35,258 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 19 treesize of output 23 [2021-11-23 17:06:35,294 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 17:06:35,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 38 [2021-11-23 17:06:35,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:35,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:35,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:35,442 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_39| (_ BitVec 32)) (v_ArrVal_350 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_351) |v_ULTIMATE.start_main_~end~0#1.base_39| v_ArrVal_350) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_39|)))))) is different from false [2021-11-23 17:06:35,640 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_40| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_39| (_ BitVec 32)) (v_ArrVal_350 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_348 (_ BitVec 32)) (v_ArrVal_347 (_ BitVec 1))) (or (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg v_ArrVal_347)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_40| v_ArrVal_347) |v_ULTIMATE.start_main_~end~0#1.base_39|)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_40|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_348)) |v_ULTIMATE.start_main_~end~0#1.base_40| v_ArrVal_351) |v_ULTIMATE.start_main_~end~0#1.base_39| v_ArrVal_350) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:35,714 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 17:06:35,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2255 treesize of output 1 [2021-11-23 17:06:35,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:06:35,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141073642] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:35,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:06:35,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 16 [2021-11-23 17:06:35,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139472488] [2021-11-23 17:06:35,722 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:06:35,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 17:06:35,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:35,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 17:06:35,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=68, Unknown=6, NotChecked=126, Total=240 [2021-11-23 17:06:35,728 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-11-23 17:06:36,072 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_264 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_5 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_264) |v_ULTIMATE.start_main_~end~0#1.base_33| v_arrayElimArr_5) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (forall ((v_ArrVal_176 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_2 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_27| (_ BitVec 32))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_2 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_176) |v_ULTIMATE.start_main_~end~0#1.base_27| v_arrayElimArr_2) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (exists ((v_arrayElimCell_17 (_ BitVec 1))) (let ((.cse0 (bvneg (bvneg (bvneg v_arrayElimCell_17))))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))) .cse0)) (= (_ bv0 1) (bvadd .cse0 (_ bv1 1)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|))))) (_ bv1 1))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~end~0#1.base_39| (_ BitVec 32)) (v_ArrVal_350 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_351 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_351) |v_ULTIMATE.start_main_~end~0#1.base_39| v_ArrVal_350) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_39|)))))) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-23 17:06:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:36,345 INFO L93 Difference]: Finished difference Result 65 states and 75 transitions. [2021-11-23 17:06:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 17:06:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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 11 [2021-11-23 17:06:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:36,348 INFO L225 Difference]: With dead ends: 65 [2021-11-23 17:06:36,348 INFO L226 Difference]: Without dead ends: 63 [2021-11-23 17:06:36,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=110, Unknown=7, NotChecked=196, Total=380 [2021-11-23 17:06:36,350 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 62 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 247 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:36,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 159 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 66 Invalid, 0 Unknown, 247 Unchecked, 0.5s Time] [2021-11-23 17:06:36,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-23 17:06:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 32. [2021-11-23 17:06:36,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 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) [2021-11-23 17:06:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-11-23 17:06:36,364 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2021-11-23 17:06:36,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:36,364 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-11-23 17:06:36,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-11-23 17:06:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-11-23 17:06:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:06:36,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:36,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:36,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:36,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:36,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:36,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:06:36,970 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:36,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:36,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1674631615, now seen corresponding path program 1 times [2021-11-23 17:06:36,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:36,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [879373588] [2021-11-23 17:06:36,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:36,972 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:36,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:36,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 17:06:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:37,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-23 17:06:37,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:37,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:37,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:37,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:37,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:06:37,221 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:37,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [879373588] [2021-11-23 17:06:37,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [879373588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:06:37,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:06:37,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 17:06:37,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552032976] [2021-11-23 17:06:37,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:06:37,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:06:37,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:37,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:06:37,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:06:37,223 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:38,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:38,166 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2021-11-23 17:06:38,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:06:38,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 17:06:38,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:38,169 INFO L225 Difference]: With dead ends: 69 [2021-11-23 17:06:38,169 INFO L226 Difference]: Without dead ends: 57 [2021-11-23 17:06:38,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 17:06:38,171 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 23 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:38,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 17:06:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-23 17:06:38,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2021-11-23 17:06:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.263157894736842) internal successors, (48), 40 states have internal predecessors, (48), 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) [2021-11-23 17:06:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-23 17:06:38,182 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 13 [2021-11-23 17:06:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:38,182 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-23 17:06:38,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-23 17:06:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:06:38,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:38,184 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:38,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:38,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:06:38,398 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:38,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:38,398 INFO L85 PathProgramCache]: Analyzing trace with hash 2053285582, now seen corresponding path program 2 times [2021-11-23 17:06:38,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:38,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691512414] [2021-11-23 17:06:38,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 17:06:38,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:38,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:38,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 17:06:38,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 17:06:38,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:06:38,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 17:06:38,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:38,806 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:38,806 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:38,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:38,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:38,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:38,909 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:38,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2021-11-23 17:06:38,926 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 3 [2021-11-23 17:06:38,978 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:38,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-11-23 17:06:39,118 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:39,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:39,141 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 3 [2021-11-23 17:06:39,192 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:39,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:06:39,285 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:39,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-23 17:06:39,326 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:39,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-11-23 17:06:39,465 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:06:39,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:06:39,476 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 [2021-11-23 17:06:39,502 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 3 [2021-11-23 17:06:39,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:39,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:39,761 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:39,761 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 18 treesize of output 22 [2021-11-23 17:06:39,791 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_9 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (v_ArrVal_519 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_9 (_ bv4 32)))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_519) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_9) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK))) is different from false [2021-11-23 17:06:39,876 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_9 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_517 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_48| (_ BitVec 32)) (v_ArrVal_519 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_517) |v_ULTIMATE.start_main_~end~0#1.base_48| v_ArrVal_519) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_9) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_9 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_48|))))))) is different from false [2021-11-23 17:06:40,070 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_9 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_517 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_49| (_ BitVec 32)) (v_ArrVal_519 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_514 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_515 (_ BitVec 1))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_9 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_49|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_514) |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_517) |v_ULTIMATE.start_main_~end~0#1.base_48| v_ArrVal_519) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_9) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_515) |v_ULTIMATE.start_main_~end~0#1.base_48|))))))) is different from false [2021-11-23 17:06:40,744 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_9 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_50| (_ BitVec 32)) (v_ArrVal_511 (_ BitVec 1)) (v_ArrVal_510 (_ BitVec 32)) (v_ArrVal_517 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_48| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_49| (_ BitVec 32)) (v_ArrVal_519 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_514 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_515 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_50| v_ArrVal_511))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_50|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_49|)))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_9 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_510)) |v_ULTIMATE.start_main_~end~0#1.base_50| v_ArrVal_514) |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_517) |v_ULTIMATE.start_main_~end~0#1.base_48| v_ArrVal_519) |v_ULTIMATE.start_main_~end~0#1.base_47| v_arrayElimArr_9) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_49| v_ArrVal_515) |v_ULTIMATE.start_main_~end~0#1.base_48|)))))))) is different from false [2021-11-23 17:06:40,807 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:40,807 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-11-23 17:06:40,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:40,810 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691512414] [2021-11-23 17:06:40,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691512414] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1549246824] [2021-11-23 17:06:40,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 17:06:40,811 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:40,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:06:40,816 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:06:40,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-23 17:06:41,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 17:06:41,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196528259] [2021-11-23 17:06:41,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 17:06:41,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:06:41,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:41,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 1 [2021-11-23 17:06:41,171 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:06:41,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 17:06:42,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 17:06:42,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:06:42,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 17:06:42,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:42,059 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:42,060 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:42,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:42,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:42,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:42,147 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:42,147 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 16 treesize of output 22 [2021-11-23 17:06:42,156 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 3 [2021-11-23 17:06:42,201 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:42,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-11-23 17:06:42,299 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:42,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:42,310 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 3 [2021-11-23 17:06:42,367 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:42,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 17:06:42,491 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:42,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:42,518 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 3 [2021-11-23 17:06:42,544 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:42,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:06:42,633 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:06:42,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:06:42,642 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 [2021-11-23 17:06:42,672 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 3 [2021-11-23 17:06:42,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:42,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:42,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:42,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:42,781 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 18 treesize of output 22 [2021-11-23 17:06:42,800 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (v_ArrVal_778 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_12 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_12 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_778) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_12) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:42,874 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_774 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (v_ArrVal_778 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_12 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_774) |v_ULTIMATE.start_main_~end~0#1.base_58| v_ArrVal_778) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_12) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_58|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_12 (_ bv4 32)))))) is different from false [2021-11-23 17:06:43,057 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_772 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_770 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_59| (_ BitVec 32)) (v_ArrVal_778 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_12 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_770) |v_ULTIMATE.start_main_~end~0#1.base_58|)))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_12 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_59|))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_772) |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_774) |v_ULTIMATE.start_main_~end~0#1.base_58| v_ArrVal_778) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_12) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:43,755 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_60| (_ BitVec 32)) (v_ArrVal_772 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_768 (_ BitVec 32)) (v_ArrVal_770 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_57| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_59| (_ BitVec 32)) (v_ArrVal_766 (_ BitVec 1)) (v_ArrVal_778 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_12 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_766))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_60|)))))) (not (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_59|))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_768)) |v_ULTIMATE.start_main_~end~0#1.base_60| v_ArrVal_772) |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_774) |v_ULTIMATE.start_main_~end~0#1.base_58| v_ArrVal_778) |v_ULTIMATE.start_main_~end~0#1.base_57| v_arrayElimArr_12) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_12 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_59| v_ArrVal_770) |v_ULTIMATE.start_main_~end~0#1.base_58|)))))))))) is different from false [2021-11-23 17:06:43,805 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:43,806 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-11-23 17:06:43,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:43,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196528259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:43,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-23 17:06:43,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9] total 18 [2021-11-23 17:06:43,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741254229] [2021-11-23 17:06:43,809 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-23 17:06:43,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 17:06:43,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:43,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 17:06:43,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=70, Unknown=8, NotChecked=184, Total=306 [2021-11-23 17:06:43,812 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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) [2021-11-23 17:06:44,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:44,566 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2021-11-23 17:06:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 17:06:44,567 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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 13 [2021-11-23 17:06:44,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:44,568 INFO L225 Difference]: With dead ends: 79 [2021-11-23 17:06:44,568 INFO L226 Difference]: Without dead ends: 77 [2021-11-23 17:06:44,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=83, Invalid=151, Unknown=8, NotChecked=264, Total=506 [2021-11-23 17:06:44,570 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 45 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 436 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:44,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 227 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 78 Invalid, 0 Unknown, 436 Unchecked, 0.5s Time] [2021-11-23 17:06:44,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-11-23 17:06:44,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 43. [2021-11-23 17:06:44,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:44,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-11-23 17:06:44,585 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 13 [2021-11-23 17:06:44,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:44,585 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-11-23 17:06:44,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 18 states have internal predecessors, (28), 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) [2021-11-23 17:06:44,586 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-11-23 17:06:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:06:44,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:44,587 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:44,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:44,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:44,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:06:44,987 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:44,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1432335088, now seen corresponding path program 1 times [2021-11-23 17:06:44,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:44,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [667842755] [2021-11-23 17:06:44,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:44,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:44,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:44,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:44,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 17:06:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:45,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 17:06:45,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:45,374 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:45,375 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:45,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:45,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:45,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:45,492 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:45,492 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 16 treesize of output 22 [2021-11-23 17:06:45,508 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 3 [2021-11-23 17:06:45,554 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:45,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-11-23 17:06:45,686 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:45,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:45,704 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 3 [2021-11-23 17:06:45,731 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:45,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:06:45,827 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:45,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:45,846 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 3 [2021-11-23 17:06:45,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:06:45,922 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:45,922 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 25 treesize of output 28 [2021-11-23 17:06:46,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:46,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:46,151 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:46,151 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 18 treesize of output 22 [2021-11-23 17:06:46,174 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_891 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_66| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_891) |v_ULTIMATE.start_main_~end~0#1.base_66| v_arrayElimArr_15) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_15 (_ bv4 32)))))) is different from false [2021-11-23 17:06:46,244 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_891 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_888 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_66| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_67| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_888) |v_ULTIMATE.start_main_~end~0#1.base_67| v_ArrVal_891) |v_ULTIMATE.start_main_~end~0#1.base_66| v_arrayElimArr_15) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_67|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_15 (_ bv4 32)))))) is different from false [2021-11-23 17:06:46,461 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_891 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_68| (_ BitVec 32)) (v_arrayElimArr_15 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_883 (_ BitVec 32)) (v_ArrVal_886 (_ BitVec 1)) (v_ArrVal_888 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_66| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_67| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_883)) |v_ULTIMATE.start_main_~end~0#1.base_68| v_ArrVal_888) |v_ULTIMATE.start_main_~end~0#1.base_67| v_ArrVal_891) |v_ULTIMATE.start_main_~end~0#1.base_66| v_arrayElimArr_15) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_68|)))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_15 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_68| v_ArrVal_886) |v_ULTIMATE.start_main_~end~0#1.base_67|)))))))) is different from false [2021-11-23 17:06:46,499 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:46,500 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-23 17:06:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:46,502 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:46,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [667842755] [2021-11-23 17:06:46,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [667842755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [411967047] [2021-11-23 17:06:46,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:46,503 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:46,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:06:46,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:06:46,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-23 17:06:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:46,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 17:06:46,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:46,871 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:46,872 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:46,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:46,949 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:46,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-23 17:06:46,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:46,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:46,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:47,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:47,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:47,066 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 19 treesize of output 23 [2021-11-23 17:06:47,098 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 17:06:47,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 17:06:47,181 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:47,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:47,200 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 3 [2021-11-23 17:06:47,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:06:47,255 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:47,255 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 25 treesize of output 28 [2021-11-23 17:06:47,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:47,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:47,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:47,378 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:47,378 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 18 treesize of output 22 [2021-11-23 17:06:47,400 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_74| (_ BitVec 32)) (v_arrayElimArr_18 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1006 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1006) |v_ULTIMATE.start_main_~end~0#1.base_74| v_arrayElimArr_18) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_18 (_ bv4 32)))))) is different from false [2021-11-23 17:06:47,480 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_74| (_ BitVec 32)) (v_arrayElimArr_18 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1006 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1004 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1001 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| v_ArrVal_1001))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1004) v_ArrVal_1001 v_ArrVal_1006) |v_ULTIMATE.start_main_~end~0#1.base_74| v_arrayElimArr_18) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_18 (_ bv4 32)))))) is different from false [2021-11-23 17:06:47,731 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_74| (_ BitVec 32)) (v_arrayElimArr_18 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1006 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1004 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1000 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_76| (_ BitVec 32)) (v_ArrVal_999 (_ BitVec 1)) (v_ArrVal_1001 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_76|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_18 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_76| v_ArrVal_999) v_ArrVal_1001)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1000)) |v_ULTIMATE.start_main_~end~0#1.base_76| v_ArrVal_1004) v_ArrVal_1001 v_ArrVal_1006) |v_ULTIMATE.start_main_~end~0#1.base_74| v_arrayElimArr_18) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg v_ArrVal_999)) (_ bv1 1)))))) is different from false [2021-11-23 17:06:47,774 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:47,775 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-23 17:06:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:47,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [411967047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:47,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163561618] [2021-11-23 17:06:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:47,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:06:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:47,779 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:06:47,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 17:06:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:47,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 17:06:47,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:47,952 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:47,953 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:47,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:47,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:47,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:48,013 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:48,013 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 16 treesize of output 22 [2021-11-23 17:06:48,020 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 3 [2021-11-23 17:06:48,059 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:48,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 17:06:48,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:48,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:48,158 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 19 treesize of output 23 [2021-11-23 17:06:48,188 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 17:06:48,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 17:06:48,258 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:48,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:48,279 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 3 [2021-11-23 17:06:48,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:06:48,331 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:48,331 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 25 treesize of output 28 [2021-11-23 17:06:48,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:48,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:48,442 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:48,443 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 18 treesize of output 22 [2021-11-23 17:06:48,461 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_82| (_ BitVec 32)) (v_ArrVal_1120 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1120) |v_ULTIMATE.start_main_~end~0#1.base_82| v_arrayElimArr_21) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_21 (_ bv4 32)))))) is different from false [2021-11-23 17:06:48,530 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_82| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_83| (_ BitVec 32)) (v_ArrVal_1120 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1118 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1118) |v_ULTIMATE.start_main_~end~0#1.base_83| v_ArrVal_1120) |v_ULTIMATE.start_main_~end~0#1.base_82| v_arrayElimArr_21) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_21 (_ bv4 32)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_83|))))) is different from false [2021-11-23 17:06:48,740 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_82| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_83| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_84| (_ BitVec 32)) (v_ArrVal_1115 (_ BitVec 32)) (v_ArrVal_1120 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1113 (_ BitVec 1)) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1118 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_84|)))) (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_84| v_ArrVal_1113) |v_ULTIMATE.start_main_~end~0#1.base_83|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_21 (_ bv4 32)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg v_ArrVal_1113)))) (_ bv1 1)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1115)) |v_ULTIMATE.start_main_~end~0#1.base_84| v_ArrVal_1118) |v_ULTIMATE.start_main_~end~0#1.base_83| v_ArrVal_1120) |v_ULTIMATE.start_main_~end~0#1.base_82| v_arrayElimArr_21) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:48,787 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:48,787 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-23 17:06:48,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:48,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163561618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:48,790 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:06:48,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 22 [2021-11-23 17:06:48,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049050121] [2021-11-23 17:06:48,790 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:06:48,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 17:06:48,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:48,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 17:06:48,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=119, Unknown=9, NotChecked=270, Total=462 [2021-11-23 17:06:48,792 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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) [2021-11-23 17:06:49,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:49,657 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2021-11-23 17:06:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 17:06:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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 13 [2021-11-23 17:06:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:49,661 INFO L225 Difference]: With dead ends: 84 [2021-11-23 17:06:49,661 INFO L226 Difference]: Without dead ends: 82 [2021-11-23 17:06:49,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=218, Unknown=9, NotChecked=360, Total=702 [2021-11-23 17:06:49,663 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 59 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:49,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 179 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 290 Unchecked, 0.6s Time] [2021-11-23 17:06:49,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-23 17:06:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 43. [2021-11-23 17:06:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.3) internal successors, (52), 42 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2021-11-23 17:06:49,672 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 13 [2021-11-23 17:06:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:49,672 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2021-11-23 17:06:49,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 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) [2021-11-23 17:06:49,673 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2021-11-23 17:06:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:06:49,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:49,674 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:49,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:49,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:50,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:50,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:50,280 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:50,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:50,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1848654704, now seen corresponding path program 2 times [2021-11-23 17:06:50,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:50,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127355512] [2021-11-23 17:06:50,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 17:06:50,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:50,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:50,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 17:06:50,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 17:06:50,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:06:50,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 17:06:50,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:50,590 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:50,590 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:50,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:50,652 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:50,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-11-23 17:06:50,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:50,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:50,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:50,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:50,792 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:50,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:50,808 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 3 [2021-11-23 17:06:50,829 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:50,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-23 17:06:50,906 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:06:50,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:06:50,912 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 [2021-11-23 17:06:50,933 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 17:06:51,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:51,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:51,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:51,091 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:51,092 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 18 treesize of output 22 [2021-11-23 17:06:51,112 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_90| (_ BitVec 32)) (v_ArrVal_1235 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_24 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1235) |v_ULTIMATE.start_main_~end~0#1.base_90| v_arrayElimArr_24) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_24 (_ bv4 32)))))) is different from false [2021-11-23 17:06:51,182 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1232 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_90| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_91| (_ BitVec 32)) (v_ArrVal_1235 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_24 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_91|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_24 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1232) |v_ULTIMATE.start_main_~end~0#1.base_91| v_ArrVal_1235) |v_ULTIMATE.start_main_~end~0#1.base_90| v_arrayElimArr_24) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:51,474 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1226 (_ BitVec 32)) (v_ArrVal_1232 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_90| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_91| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_92| (_ BitVec 32)) (v_ArrVal_1235 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_24 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1227 (_ BitVec 1))) (or (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_92| v_ArrVal_1227) |v_ULTIMATE.start_main_~end~0#1.base_91|)))) (= (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1226)) |v_ULTIMATE.start_main_~end~0#1.base_92| v_ArrVal_1232) |v_ULTIMATE.start_main_~end~0#1.base_91| v_ArrVal_1235) |v_ULTIMATE.start_main_~end~0#1.base_90| v_arrayElimArr_24) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_24 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_92|)))))) is different from false [2021-11-23 17:06:51,512 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:51,512 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-23 17:06:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:51,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:51,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127355512] [2021-11-23 17:06:51,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127355512] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:51,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1439104623] [2021-11-23 17:06:51,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 17:06:51,516 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:51,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:06:51,517 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:06:51,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-23 17:06:51,842 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 17:06:51,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632489340] [2021-11-23 17:06:51,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 17:06:51,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:06:51,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:51,844 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:06:51,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 1 [2021-11-23 17:06:51,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 17:06:52,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 17:06:52,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:06:52,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 17:06:52,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:52,270 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:52,271 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:52,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:52,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:52,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:52,319 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:52,319 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 16 treesize of output 22 [2021-11-23 17:06:52,323 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 3 [2021-11-23 17:06:52,353 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:52,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-11-23 17:06:52,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:52,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:52,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:52,493 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 19 treesize of output 23 [2021-11-23 17:06:52,521 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 17:06:52,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-11-23 17:06:52,615 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:06:52,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:06:52,624 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 [2021-11-23 17:06:52,645 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 17:06:52,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:52,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:52,742 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:52,742 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 18 treesize of output 22 [2021-11-23 17:06:52,771 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1446 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_98| (_ BitVec 32))) (or (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1446) |v_ULTIMATE.start_main_~end~0#1.base_98| v_arrayElimArr_27) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_27 (_ bv4 32)))))) is different from false [2021-11-23 17:06:52,832 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1446 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_98| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_99| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1445) |v_ULTIMATE.start_main_~end~0#1.base_99| v_ArrVal_1446) |v_ULTIMATE.start_main_~end~0#1.base_98| v_arrayElimArr_27) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_99|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_27 (_ bv4 32)))))) is different from false [2021-11-23 17:06:53,122 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1441 (_ BitVec 1)) (v_ArrVal_1439 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_100| (_ BitVec 32)) (v_ArrVal_1445 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1446 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_27 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_98| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_99| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg v_ArrVal_1441)))) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_100| v_ArrVal_1441) |v_ULTIMATE.start_main_~end~0#1.base_99|))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1439)) |v_ULTIMATE.start_main_~end~0#1.base_100| v_ArrVal_1445) |v_ULTIMATE.start_main_~end~0#1.base_99| v_ArrVal_1446) |v_ULTIMATE.start_main_~end~0#1.base_98| v_arrayElimArr_27) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_27 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_100|))))))) is different from false [2021-11-23 17:06:53,171 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:53,171 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 1 [2021-11-23 17:06:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:53,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632489340] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:53,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-23 17:06:53,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 17 [2021-11-23 17:06:53,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679194] [2021-11-23 17:06:53,174 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-23 17:06:53,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 17:06:53,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 17:06:53,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=82, Unknown=6, NotChecked=138, Total=272 [2021-11-23 17:06:53,176 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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) [2021-11-23 17:06:53,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:53,573 INFO L93 Difference]: Finished difference Result 82 states and 95 transitions. [2021-11-23 17:06:53,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 17:06:53,574 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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 13 [2021-11-23 17:06:53,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:53,575 INFO L225 Difference]: With dead ends: 82 [2021-11-23 17:06:53,575 INFO L226 Difference]: Without dead ends: 80 [2021-11-23 17:06:53,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=129, Unknown=6, NotChecked=174, Total=380 [2021-11-23 17:06:53,577 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 47 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:53,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 173 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 59 Invalid, 0 Unknown, 255 Unchecked, 0.3s Time] [2021-11-23 17:06:53,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-23 17:06:53,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2021-11-23 17:06:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 41 states have (on average 1.3170731707317074) internal successors, (54), 43 states have internal predecessors, (54), 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) [2021-11-23 17:06:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2021-11-23 17:06:53,592 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 13 [2021-11-23 17:06:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:53,592 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-11-23 17:06:53,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 17 states have internal predecessors, (31), 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) [2021-11-23 17:06:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2021-11-23 17:06:53,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 17:06:53,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:53,594 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:53,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:53,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:54,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:06:54,009 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:54,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1039308078, now seen corresponding path program 1 times [2021-11-23 17:06:54,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:54,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270021523] [2021-11-23 17:06:54,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:54,011 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:54,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:54,012 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:54,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 17:06:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:54,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 17:06:54,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:54,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:54,303 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:54,304 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:54,370 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:54,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-11-23 17:06:54,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:54,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:54,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:54,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:54,476 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:54,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:54,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-23 17:06:54,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:06:54,577 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:54,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2021-11-23 17:06:54,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:54,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:54,775 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:54,775 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 18 treesize of output 22 [2021-11-23 17:06:54,790 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_30 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_105| (_ BitVec 32)) (v_ArrVal_1536 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_30 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1536) |v_ULTIMATE.start_main_~end~0#1.base_105| v_arrayElimArr_30) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:06:54,910 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1534 (_ BitVec 32)) (v_arrayElimArr_30 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_105| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_106| (_ BitVec 32)) (v_ArrVal_1536 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_30 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1534)) |v_ULTIMATE.start_main_~end~0#1.base_106| v_ArrVal_1536) |v_ULTIMATE.start_main_~end~0#1.base_105| v_arrayElimArr_30) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_106|)))))) is different from false [2021-11-23 17:06:54,936 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:54,936 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-11-23 17:06:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:54,939 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:54,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270021523] [2021-11-23 17:06:54,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270021523] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:54,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1632451385] [2021-11-23 17:06:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:54,940 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:54,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:06:54,944 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:06:54,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-23 17:06:55,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:55,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 17:06:55,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:55,236 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:55,237 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:55,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:55,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:55,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:55,292 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:06:55,293 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 16 treesize of output 22 [2021-11-23 17:06:55,301 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 3 [2021-11-23 17:06:55,320 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:06:55,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-11-23 17:06:55,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:55,402 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:06:55,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:06:55,419 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 3 [2021-11-23 17:06:55,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:06:55,483 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:55,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 28 [2021-11-23 17:06:55,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:55,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:55,583 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:06:55,583 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 18 treesize of output 22 [2021-11-23 17:06:55,602 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1627 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_111| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1627) |v_ULTIMATE.start_main_~end~0#1.base_111| v_arrayElimArr_33) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_33 (_ bv4 32)))))) is different from false [2021-11-23 17:06:55,702 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1622 (_ BitVec 32)) (v_ArrVal_1627 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1625 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_111| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1625)) v_ArrVal_1622 v_ArrVal_1627) |v_ULTIMATE.start_main_~end~0#1.base_111| v_arrayElimArr_33) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ArrVal_1622)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_33 (_ bv4 32)))))) is different from false [2021-11-23 17:06:55,727 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:06:55,727 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 1 [2021-11-23 17:06:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:55,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1632451385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:55,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338964646] [2021-11-23 17:06:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:55,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:06:55,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:06:55,730 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:06:55,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 17:06:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:55,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 17:06:55,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:55,920 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:55,920 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:55,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:55,969 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:55,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:06:55,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:55,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:56,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:56,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:56,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:56,104 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 19 treesize of output 23 [2021-11-23 17:06:56,122 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 17:06:56,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2021-11-23 17:06:56,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:56,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:06:56,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:06:56,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:06:56,223 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1720 (Array (_ BitVec 32) (_ BitVec 32)))) (= ~unnamed1~0~BLACK (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1720) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-23 17:06:56,252 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1720 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_117| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1719) |v_ULTIMATE.start_main_~end~0#1.base_117| v_ArrVal_1720) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_117|))))))) is different from false [2021-11-23 17:06:56,385 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1713 (_ BitVec 32)) (v_ArrVal_1720 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1714 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_117| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_118| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_118| v_ArrVal_1714) |v_ULTIMATE.start_main_~end~0#1.base_117|)))))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1713)) |v_ULTIMATE.start_main_~end~0#1.base_118| v_ArrVal_1719) |v_ULTIMATE.start_main_~end~0#1.base_117| v_ArrVal_1720) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg v_ArrVal_1714))) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_118|)))))) is different from false [2021-11-23 17:06:56,427 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 17:06:56,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 1 [2021-11-23 17:06:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 17:06:56,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338964646] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:06:56,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:06:56,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 19 [2021-11-23 17:06:56,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956905172] [2021-11-23 17:06:56,430 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:06:56,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 17:06:56,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:56,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 17:06:56,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=100, Unknown=7, NotChecked=182, Total=342 [2021-11-23 17:06:56,431 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) [2021-11-23 17:06:56,555 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (.cse2 (= ~unnamed1~0~BLACK (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (and (forall ((v_arrayElimArr_30 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_105| (_ BitVec 32)) (v_ArrVal_1536 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_30 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1536) |v_ULTIMATE.start_main_~end~0#1.base_105| v_arrayElimArr_30) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (not .cse0) (forall ((v_ArrVal_1627 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_111| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1627) |v_ULTIMATE.start_main_~end~0#1.base_111| v_arrayElimArr_33) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_33 (_ bv4 32)))))) (= |c_ULTIMATE.start_main_~end~0#1.offset| (_ bv0 32)) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|))))) (_ bv1 1))) (forall ((v_ArrVal_1719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1720 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_117| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1719) |v_ULTIMATE.start_main_~end~0#1.base_117| v_ArrVal_1720) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_117|))))))) (exists ((v_arrayElimCell_140 (_ BitVec 1))) (let ((.cse1 (bvneg v_arrayElimCell_140))) (and (= (_ bv0 1) (bvadd .cse1 (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg .cse1))) (_ bv1 1)))))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (or .cse0 .cse2) .cse2)) is different from false [2021-11-23 17:06:56,595 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_30 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_105| (_ BitVec 32)) (v_ArrVal_1536 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_30 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1536) |v_ULTIMATE.start_main_~end~0#1.base_105| v_arrayElimArr_30) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (forall ((v_ArrVal_1627 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_111| (_ BitVec 32)) (v_arrayElimArr_33 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1627) |v_ULTIMATE.start_main_~end~0#1.base_111| v_arrayElimArr_33) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_33 (_ bv4 32)))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|))))) (_ bv1 1))) (forall ((v_ArrVal_1719 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1720 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_117| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1719) |v_ULTIMATE.start_main_~end~0#1.base_117| v_ArrVal_1720) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_117|))))))) (exists ((v_arrayElimCell_140 (_ BitVec 1))) (let ((.cse0 (bvneg v_arrayElimCell_140))) (and (= (_ bv0 1) (bvadd .cse0 (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg .cse0))) (_ bv1 1)))))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-23 17:06:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:56,997 INFO L93 Difference]: Finished difference Result 87 states and 104 transitions. [2021-11-23 17:06:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 17:06:56,998 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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 13 [2021-11-23 17:06:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:56,999 INFO L225 Difference]: With dead ends: 87 [2021-11-23 17:06:56,999 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 17:06:57,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=174, Unknown=9, NotChecked=324, Total=600 [2021-11-23 17:06:57,001 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 70 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 274 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:57,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 237 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 83 Invalid, 0 Unknown, 274 Unchecked, 0.4s Time] [2021-11-23 17:06:57,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 17:06:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 46. [2021-11-23 17:06:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 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) [2021-11-23 17:06:57,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-11-23 17:06:57,010 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 13 [2021-11-23 17:06:57,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:57,010 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-23 17:06:57,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 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) [2021-11-23 17:06:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-11-23 17:06:57,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:06:57,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:57,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:57,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:57,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:57,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:57,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 17:06:57,628 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -761736198, now seen corresponding path program 1 times [2021-11-23 17:06:57,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:57,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139595771] [2021-11-23 17:06:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:06:57,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:57,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:57,630 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:57,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 17:06:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:06:57,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:06:57,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:57,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-23 17:06:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 17:06:57,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:06:57,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:06:57,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139595771] [2021-11-23 17:06:57,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139595771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:06:57,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:06:57,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 17:06:57,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344735923] [2021-11-23 17:06:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:06:57,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:06:57,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:06:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:06:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:06:57,842 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:58,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:06:58,112 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-11-23 17:06:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 17:06:58,112 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 17:06:58,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:06:58,113 INFO L225 Difference]: With dead ends: 61 [2021-11-23 17:06:58,113 INFO L226 Difference]: Without dead ends: 49 [2021-11-23 17:06:58,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 17:06:58,114 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 17:06:58,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 17:06:58,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-23 17:06:58,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-11-23 17:06:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:58,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2021-11-23 17:06:58,121 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 15 [2021-11-23 17:06:58,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:06:58,122 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2021-11-23 17:06:58,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:06:58,122 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2021-11-23 17:06:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:06:58,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:06:58,123 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:06:58,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 17:06:58,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:06:58,350 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:06:58,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:06:58,351 INFO L85 PathProgramCache]: Analyzing trace with hash -383082231, now seen corresponding path program 3 times [2021-11-23 17:06:58,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:06:58,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274297794] [2021-11-23 17:06:58,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 17:06:58,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:06:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:06:58,352 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:06:58,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 17:06:58,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 17:06:58,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:06:58,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-23 17:06:58,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:06:58,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:06:58,925 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:06:58,926 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:06:58,996 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:06:58,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:06:59,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:59,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:06:59,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:06:59,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:59,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:59,088 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 19 treesize of output 23 [2021-11-23 17:06:59,125 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 17:06:59,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 17:06:59,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:59,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:59,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:06:59,302 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-23 17:06:59,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 74 [2021-11-23 17:06:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:59,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:06:59,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:06:59,634 INFO L354 Elim1Store]: treesize reduction 60, result has 45.0 percent of original size [2021-11-23 17:06:59,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 94 [2021-11-23 17:07:00,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:00,106 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:07:00,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-11-23 17:07:00,231 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-23 17:07:00,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 55 treesize of output 61 [2021-11-23 17:07:00,362 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:07:00,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:07:00,371 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 [2021-11-23 17:07:00,394 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 17:07:00,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:07:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:07:00,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:07:00,633 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:07:00,633 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 18 treesize of output 22 [2021-11-23 17:07:00,653 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1983 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_127| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1983) |v_ULTIMATE.start_main_~end~0#1.base_127| v_arrayElimArr_37) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_37 (_ bv4 32)))))) is different from false [2021-11-23 17:07:00,722 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1980 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1983 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_127| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_128| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_128|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1980) |v_ULTIMATE.start_main_~end~0#1.base_128| v_ArrVal_1983) |v_ULTIMATE.start_main_~end~0#1.base_127| v_arrayElimArr_37) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_37 (_ bv4 32)))))) is different from false [2021-11-23 17:07:00,876 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1980 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1983 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1977 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_127| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_128| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_129| (_ BitVec 32)) (v_ArrVal_1976 (_ BitVec 1))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1977) |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1980) |v_ULTIMATE.start_main_~end~0#1.base_128| v_ArrVal_1983) |v_ULTIMATE.start_main_~end~0#1.base_127| v_arrayElimArr_37) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1976) |v_ULTIMATE.start_main_~end~0#1.base_128|)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_129|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_37 (_ bv4 32)))))) is different from false [2021-11-23 17:07:01,241 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_130| (_ BitVec 32)) (v_ArrVal_1980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1974 (_ BitVec 1)) (v_arrayElimArr_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1983 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1977 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_127| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_128| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_129| (_ BitVec 32)) (v_ArrVal_1976 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_130| v_ArrVal_1974))) (or (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_129|)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_1974) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1976) |v_ULTIMATE.start_main_~end~0#1.base_128|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_37 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1973) |v_ULTIMATE.start_main_~end~0#1.base_130| v_ArrVal_1977) |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1980) |v_ULTIMATE.start_main_~end~0#1.base_128| v_ArrVal_1983) |v_ULTIMATE.start_main_~end~0#1.base_127| v_arrayElimArr_37) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_130|)))))))))) is different from false [2021-11-23 17:07:02,185 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_130| (_ BitVec 32)) (v_ArrVal_1970 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_131| (_ BitVec 32)) (v_ArrVal_1974 (_ BitVec 1)) (v_ArrVal_1976 (_ BitVec 1)) (v_ArrVal_1980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1973 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1972 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1983 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1977 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_127| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_128| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_129| (_ BitVec 32))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_131| v_ArrVal_1970))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_130| v_ArrVal_1974))) (or (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_1974) (_ bv1 1)))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg v_ArrVal_1970)))) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_129|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_130|)))))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_37 (_ bv4 32)))) (not (= (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_131|))))) (_ bv0 1))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1972) |v_ULTIMATE.start_main_~end~0#1.base_131| v_ArrVal_1973) |v_ULTIMATE.start_main_~end~0#1.base_130| v_ArrVal_1977) |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1980) |v_ULTIMATE.start_main_~end~0#1.base_128| v_ArrVal_1983) |v_ULTIMATE.start_main_~end~0#1.base_127| v_arrayElimArr_37) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1976) |v_ULTIMATE.start_main_~end~0#1.base_128|))))))))) is different from false [2021-11-23 17:07:04,494 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_130| (_ BitVec 32)) (v_ArrVal_1970 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_131| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_132| (_ BitVec 32)) (v_ArrVal_1966 (_ BitVec 32)) (v_ArrVal_1974 (_ BitVec 1)) (v_ArrVal_1967 (_ BitVec 1)) (v_ArrVal_1976 (_ BitVec 1)) (v_ArrVal_1980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1973 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1972 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1983 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1977 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_127| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_128| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_129| (_ BitVec 32))) (let ((.cse2 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_132| v_ArrVal_1967))) (let ((.cse0 (store .cse2 |v_ULTIMATE.start_main_~end~0#1.base_131| v_ArrVal_1970))) (let ((.cse1 (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_130| v_ArrVal_1974))) (or (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_1974) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_130|))))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_129|))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse2 |v_ULTIMATE.start_main_~end~0#1.base_131|))))))) (not (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg v_ArrVal_1970)))) (_ bv1 1)))) (= (select (select (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1966)) |v_ULTIMATE.start_main_~end~0#1.base_132| v_ArrVal_1972) |v_ULTIMATE.start_main_~end~0#1.base_131| v_ArrVal_1973) |v_ULTIMATE.start_main_~end~0#1.base_130| v_ArrVal_1977) |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1980) |v_ULTIMATE.start_main_~end~0#1.base_128| v_ArrVal_1983) |v_ULTIMATE.start_main_~end~0#1.base_127| v_arrayElimArr_37) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_129| v_ArrVal_1976) |v_ULTIMATE.start_main_~end~0#1.base_128|)))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_37 (_ bv4 32)))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg v_ArrVal_1967))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_132|))))))))))) is different from false [2021-11-23 17:07:04,582 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:07:04,582 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 1 [2021-11-23 17:07:04,584 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 17:07:04,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:07:04,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274297794] [2021-11-23 17:07:04,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274297794] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:07:04,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [20146996] [2021-11-23 17:07:04,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 17:07:04,586 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:07:04,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:07:04,587 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:07:04,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-23 17:07:05,119 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 17:07:05,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772567083] [2021-11-23 17:07:05,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 17:07:05,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:07:05,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:07:05,121 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:07:05,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 17:07:05,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 1 [2021-11-23 17:07:29,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 17:07:29,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:07:29,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-23 17:07:29,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:07:29,971 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:07:29,971 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:07:29,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:07:30,024 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:07:30,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:07:30,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:30,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:07:30,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:07:30,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:30,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:30,106 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 19 treesize of output 23 [2021-11-23 17:07:30,160 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 17:07:30,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 17:07:30,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:30,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:30,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:07:30,396 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-23 17:07:30,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 71 [2021-11-23 17:07:30,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:30,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:30,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:07:30,851 INFO L354 Elim1Store]: treesize reduction 60, result has 45.0 percent of original size [2021-11-23 17:07:30,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 56 treesize of output 93 [2021-11-23 17:07:32,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:32,563 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:07:32,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-11-23 17:07:32,630 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-23 17:07:32,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 58 [2021-11-23 17:07:32,712 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:07:32,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:07:32,719 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 [2021-11-23 17:07:32,732 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 3 [2021-11-23 17:07:32,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:07:32,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:07:32,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:07:32,840 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:07:32,840 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 18 treesize of output 22 [2021-11-23 17:07:32,854 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2340 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_40 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_141| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2340) |v_ULTIMATE.start_main_~end~0#1.base_141| v_arrayElimArr_40) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_40 (_ bv4 32)))))) is different from false [2021-11-23 17:07:32,915 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2340 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_40 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_141| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_142| (_ BitVec 32)) (v_ArrVal_2336 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_142|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_40 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2336) |v_ULTIMATE.start_main_~end~0#1.base_142| v_ArrVal_2340) |v_ULTIMATE.start_main_~end~0#1.base_141| v_arrayElimArr_40) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:07:33,050 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2340 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_40 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2332 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_141| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_142| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_143| (_ BitVec 32)) (v_ArrVal_2336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2334 (_ BitVec 1))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_143|))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2332) |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2336) |v_ULTIMATE.start_main_~end~0#1.base_142| v_ArrVal_2340) |v_ULTIMATE.start_main_~end~0#1.base_141| v_arrayElimArr_40) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2334) |v_ULTIMATE.start_main_~end~0#1.base_142|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_40 (_ bv4 32)))))) is different from false [2021-11-23 17:07:33,486 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2340 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_40 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2332 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_141| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_142| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_143| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_144| (_ BitVec 32)) (v_ArrVal_2336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2334 (_ BitVec 1)) (v_ArrVal_2329 (_ BitVec 1)) (v_ArrVal_2328 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_144| v_ArrVal_2329))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2334) |v_ULTIMATE.start_main_~end~0#1.base_142|)))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_2329)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_143|))))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_40 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_144|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2328) |v_ULTIMATE.start_main_~end~0#1.base_144| v_ArrVal_2332) |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2336) |v_ULTIMATE.start_main_~end~0#1.base_142| v_ArrVal_2340) |v_ULTIMATE.start_main_~end~0#1.base_141| v_arrayElimArr_40) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2021-11-23 17:07:34,396 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_141| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_142| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_143| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_144| (_ BitVec 32)) (v_ArrVal_2324 (_ BitVec 1)) (v_ArrVal_2334 (_ BitVec 1)) (v_ArrVal_2329 (_ BitVec 1)) (v_ArrVal_2340 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_40 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2332 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_145| (_ BitVec 32)) (v_ArrVal_2336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2328 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_145| v_ArrVal_2324))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_144| v_ArrVal_2329))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2334) |v_ULTIMATE.start_main_~end~0#1.base_142|))))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_2324) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_143|))))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2327) |v_ULTIMATE.start_main_~end~0#1.base_145| v_ArrVal_2328) |v_ULTIMATE.start_main_~end~0#1.base_144| v_ArrVal_2332) |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2336) |v_ULTIMATE.start_main_~end~0#1.base_142| v_ArrVal_2340) |v_ULTIMATE.start_main_~end~0#1.base_141| v_arrayElimArr_40) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_144|))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_2329)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_40 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_145|))))))))) is different from false [2021-11-23 17:07:36,854 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_141| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_142| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_143| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_144| (_ BitVec 32)) (v_ArrVal_2324 (_ BitVec 1)) (v_ArrVal_2323 (_ BitVec 1)) (v_ArrVal_2334 (_ BitVec 1)) (v_ArrVal_2329 (_ BitVec 1)) (v_ArrVal_2322 (_ BitVec 32)) (v_ArrVal_2340 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_40 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2332 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_145| (_ BitVec 32)) (v_ArrVal_2336 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_146| (_ BitVec 32)) (v_ArrVal_2327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2328 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_146| v_ArrVal_2323))) (let ((.cse2 (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_145| v_ArrVal_2324))) (let ((.cse0 (store .cse2 |v_ULTIMATE.start_main_~end~0#1.base_144| v_ArrVal_2329))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2322)) |v_ULTIMATE.start_main_~end~0#1.base_146| v_ArrVal_2327) |v_ULTIMATE.start_main_~end~0#1.base_145| v_ArrVal_2328) |v_ULTIMATE.start_main_~end~0#1.base_144| v_ArrVal_2332) |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2336) |v_ULTIMATE.start_main_~end~0#1.base_142| v_ArrVal_2340) |v_ULTIMATE.start_main_~end~0#1.base_141| v_arrayElimArr_40) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_2324) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_143|))))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_2323)))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_2329)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_40 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_146|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_145|)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_143| v_ArrVal_2334) |v_ULTIMATE.start_main_~end~0#1.base_142|)))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse2 |v_ULTIMATE.start_main_~end~0#1.base_144|))))))))))) is different from false [2021-11-23 17:07:36,933 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:07:36,933 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 1 [2021-11-23 17:07:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 17:07:36,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772567083] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:07:36,935 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-23 17:07:36,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11] total 25 [2021-11-23 17:07:36,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298242375] [2021-11-23 17:07:36,935 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-23 17:07:36,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 17:07:36,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:07:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 17:07:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=122, Unknown=12, NotChecked=396, Total=600 [2021-11-23 17:07:36,937 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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) [2021-11-23 17:07:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:07:37,707 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2021-11-23 17:07:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 17:07:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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 [2021-11-23 17:07:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:07:37,708 INFO L225 Difference]: With dead ends: 81 [2021-11-23 17:07:37,709 INFO L226 Difference]: Without dead ends: 79 [2021-11-23 17:07:37,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 12 IntricatePredicates, 2 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=12, NotChecked=516, Total=870 [2021-11-23 17:07:37,710 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 37 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 17:07:37,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 228 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 50 Invalid, 0 Unknown, 369 Unchecked, 0.2s Time] [2021-11-23 17:07:37,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-23 17:07:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 42. [2021-11-23 17:07:37,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.435897435897436) internal successors, (56), 41 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:07:37,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 56 transitions. [2021-11-23 17:07:37,720 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 56 transitions. Word has length 15 [2021-11-23 17:07:37,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:07:37,720 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 56 transitions. [2021-11-23 17:07:37,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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) [2021-11-23 17:07:37,721 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 56 transitions. [2021-11-23 17:07:37,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:07:37,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:07:37,722 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:07:37,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-11-23 17:07:37,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 17:07:38,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:07:38,128 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:07:38,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:07:38,128 INFO L85 PathProgramCache]: Analyzing trace with hash 426264395, now seen corresponding path program 3 times [2021-11-23 17:07:38,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:07:38,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900155455] [2021-11-23 17:07:38,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 17:07:38,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:07:38,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:07:38,129 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:07:38,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 17:07:38,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 17:07:38,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:07:38,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 17:07:38,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:07:38,658 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:07:38,658 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:07:38,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:07:38,729 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:07:38,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-23 17:07:38,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:07:38,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:07:38,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:07:38,821 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:07:38,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:07:38,840 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 3 [2021-11-23 17:07:38,872 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:07:38,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-23 17:07:38,942 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:07:38,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:07:38,956 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 3 [2021-11-23 17:07:38,997 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:07:38,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-23 17:07:39,079 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:07:39,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:07:39,086 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 3 [2021-11-23 17:07:39,114 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 17:07:39,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2021-11-23 17:07:39,198 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:07:39,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:07:39,212 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 3 [2021-11-23 17:07:39,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:07:39,286 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:07:39,286 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 25 treesize of output 28 [2021-11-23 17:07:39,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:07:39,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 17:07:39,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:07:39,509 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:07:39,509 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 18 treesize of output 22 [2021-11-23 17:07:39,531 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_154| (_ BitVec 32)) (v_arrayElimArr_43 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_43 (_ bv4 32)))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2504) |v_ULTIMATE.start_main_~end~0#1.base_154| v_arrayElimArr_43) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK))) is different from false [2021-11-23 17:07:39,595 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_154| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_155| (_ BitVec 32)) (v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_43 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2501) |v_ULTIMATE.start_main_~end~0#1.base_155| v_ArrVal_2504) |v_ULTIMATE.start_main_~end~0#1.base_154| v_arrayElimArr_43) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_155|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_43 (_ bv4 32)))))) is different from false [2021-11-23 17:07:39,705 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2497 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_154| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_155| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_156| (_ BitVec 32)) (v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2499 (_ BitVec 1)) (v_arrayElimArr_43 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_156| v_ArrVal_2499) |v_ULTIMATE.start_main_~end~0#1.base_155|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_156|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_43 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2497) |v_ULTIMATE.start_main_~end~0#1.base_156| v_ArrVal_2501) |v_ULTIMATE.start_main_~end~0#1.base_155| v_ArrVal_2504) |v_ULTIMATE.start_main_~end~0#1.base_154| v_arrayElimArr_43) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:07:40,018 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2494 (_ BitVec 1)) (v_ArrVal_2497 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2495 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_154| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_155| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_156| (_ BitVec 32)) (v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_157| (_ BitVec 32)) (v_ArrVal_2499 (_ BitVec 1)) (v_arrayElimArr_43 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_157| v_ArrVal_2494))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_156| v_ArrVal_2499) |v_ULTIMATE.start_main_~end~0#1.base_155|))))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_157|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_43 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_156|))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2495) |v_ULTIMATE.start_main_~end~0#1.base_157| v_ArrVal_2497) |v_ULTIMATE.start_main_~end~0#1.base_156| v_ArrVal_2501) |v_ULTIMATE.start_main_~end~0#1.base_155| v_ArrVal_2504) |v_ULTIMATE.start_main_~end~0#1.base_154| v_arrayElimArr_43) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2021-11-23 17:07:41,375 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2494 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_154| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_155| (_ BitVec 32)) (v_ArrVal_2492 (_ BitVec 32)) (v_ArrVal_2489 (_ BitVec 1)) (v_ArrVal_2499 (_ BitVec 1)) (v_ArrVal_2497 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2495 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_156| (_ BitVec 32)) (v_ArrVal_2501 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_157| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_158| (_ BitVec 32)) (v_arrayElimArr_43 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2504 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_158| v_ArrVal_2489))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_157| v_ArrVal_2494))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2492)) |v_ULTIMATE.start_main_~end~0#1.base_158| v_ArrVal_2495) |v_ULTIMATE.start_main_~end~0#1.base_157| v_ArrVal_2497) |v_ULTIMATE.start_main_~end~0#1.base_156| v_ArrVal_2501) |v_ULTIMATE.start_main_~end~0#1.base_155| v_ArrVal_2504) |v_ULTIMATE.start_main_~end~0#1.base_154| v_arrayElimArr_43) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_156|))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_158|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_156| v_ArrVal_2499) |v_ULTIMATE.start_main_~end~0#1.base_155|)))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_43 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_157|))))))))) is different from false [2021-11-23 17:07:41,420 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:07:41,420 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 1 [2021-11-23 17:07:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 17:07:41,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:07:41,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900155455] [2021-11-23 17:07:41,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900155455] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:07:41,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1996563154] [2021-11-23 17:07:41,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 17:07:41,423 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:07:41,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:07:41,423 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:07:41,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-23 17:07:41,925 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 17:07:41,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123920151] [2021-11-23 17:07:41,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 17:07:41,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:07:41,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:07:41,927 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:07:41,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 17:07:41,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 1 [2021-11-23 17:08:02,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-23 17:08:02,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:08:02,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-23 17:08:02,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:02,572 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:08:02,572 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:08:02,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:08:02,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:02,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:08:02,631 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:08:02,631 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 16 treesize of output 22 [2021-11-23 17:08:02,641 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 3 [2021-11-23 17:08:02,670 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:08:02,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 35 [2021-11-23 17:08:02,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:02,758 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 19 treesize of output 23 [2021-11-23 17:08:02,800 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 17:08:02,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 47 [2021-11-23 17:08:02,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:02,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:02,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:08:02,987 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-23 17:08:02,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 69 [2021-11-23 17:08:03,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:03,249 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:08:03,250 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 1 case distinctions, treesize of input 19 treesize of output 27 [2021-11-23 17:08:03,295 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-23 17:08:03,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 44 [2021-11-23 17:08:03,356 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-23 17:08:03,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 31 [2021-11-23 17:08:03,364 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 3 [2021-11-23 17:08:03,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:08:03,411 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:08:03,412 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 25 treesize of output 28 [2021-11-23 17:08:03,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:03,473 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:03,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:03,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:03,516 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 18 treesize of output 22 [2021-11-23 17:08:03,533 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_166| (_ BitVec 32)) (v_ArrVal_2813 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_46 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2813) |v_ULTIMATE.start_main_~end~0#1.base_166| v_arrayElimArr_46) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_46 (_ bv4 32)))))) is different from false [2021-11-23 17:08:03,597 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_166| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_167| (_ BitVec 32)) (v_ArrVal_2813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_46 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_167|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2812) |v_ULTIMATE.start_main_~end~0#1.base_167| v_ArrVal_2813) |v_ULTIMATE.start_main_~end~0#1.base_166| v_arrayElimArr_46) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_46 (_ bv4 32)))))) is different from false [2021-11-23 17:08:03,777 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2807 (_ BitVec 1)) (v_ArrVal_2809 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_166| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_167| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_168| (_ BitVec 32)) (v_ArrVal_2813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_46 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_168| v_ArrVal_2807) |v_ULTIMATE.start_main_~end~0#1.base_167|)))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2809) |v_ULTIMATE.start_main_~end~0#1.base_168| v_ArrVal_2812) |v_ULTIMATE.start_main_~end~0#1.base_167| v_ArrVal_2813) |v_ULTIMATE.start_main_~end~0#1.base_166| v_arrayElimArr_46) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_168|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_46 (_ bv4 32)))))) is different from false [2021-11-23 17:08:04,172 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2807 (_ BitVec 1)) (v_ArrVal_2804 (_ BitVec 1)) (v_ArrVal_2809 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_166| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_167| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_168| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_169| (_ BitVec 32)) (v_ArrVal_2813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_46 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_169| v_ArrVal_2804))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_168| v_ArrVal_2807) |v_ULTIMATE.start_main_~end~0#1.base_167|)))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2806) |v_ULTIMATE.start_main_~end~0#1.base_169| v_ArrVal_2809) |v_ULTIMATE.start_main_~end~0#1.base_168| v_ArrVal_2812) |v_ULTIMATE.start_main_~end~0#1.base_167| v_ArrVal_2813) |v_ULTIMATE.start_main_~end~0#1.base_166| v_arrayElimArr_46) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_2804)))) (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_168|)))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_169|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_46 (_ bv4 32))))))) is different from false [2021-11-23 17:08:05,118 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_170| (_ BitVec 32)) (v_ArrVal_2806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2799 (_ BitVec 32)) (v_ArrVal_2809 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_166| (_ BitVec 32)) (v_ArrVal_2801 (_ BitVec 1)) (v_ArrVal_2807 (_ BitVec 1)) (v_ArrVal_2804 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_167| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_168| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_169| (_ BitVec 32)) (v_ArrVal_2813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2812 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_46 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_170| v_ArrVal_2801))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_169| v_ArrVal_2804))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_170|))))) (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_168|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_168| v_ArrVal_2807) |v_ULTIMATE.start_main_~end~0#1.base_167|))))))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_169|)))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_2804)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_2801) (_ bv1 1)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2799)) |v_ULTIMATE.start_main_~end~0#1.base_170| v_ArrVal_2806) |v_ULTIMATE.start_main_~end~0#1.base_169| v_ArrVal_2809) |v_ULTIMATE.start_main_~end~0#1.base_168| v_ArrVal_2812) |v_ULTIMATE.start_main_~end~0#1.base_167| v_ArrVal_2813) |v_ULTIMATE.start_main_~end~0#1.base_166| v_arrayElimArr_46) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_46 (_ bv4 32)))))))) is different from false [2021-11-23 17:08:05,179 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:08:05,179 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 1 [2021-11-23 17:08:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 17:08:05,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123920151] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:08:05,182 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-23 17:08:05,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11, 11] total 25 [2021-11-23 17:08:05,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673733043] [2021-11-23 17:08:05,183 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-23 17:08:05,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-23 17:08:05,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:08:05,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-23 17:08:05,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=159, Unknown=10, NotChecked=350, Total=600 [2021-11-23 17:08:05,185 INFO L87 Difference]: Start difference. First operand 42 states and 56 transitions. Second operand has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 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) [2021-11-23 17:08:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:08:06,323 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2021-11-23 17:08:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 17:08:06,324 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 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) Word has length 15 [2021-11-23 17:08:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:08:06,325 INFO L225 Difference]: With dead ends: 93 [2021-11-23 17:08:06,325 INFO L226 Difference]: Without dead ends: 91 [2021-11-23 17:08:06,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 10 IntricatePredicates, 1 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=375, Unknown=10, NotChecked=510, Total=1056 [2021-11-23 17:08:06,326 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 464 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:08:06,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 190 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 92 Invalid, 0 Unknown, 464 Unchecked, 0.5s Time] [2021-11-23 17:08:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-11-23 17:08:06,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 40. [2021-11-23 17:08:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:08:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2021-11-23 17:08:06,335 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 15 [2021-11-23 17:08:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:08:06,335 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2021-11-23 17:08:06,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.48) internal successors, (37), 25 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) [2021-11-23 17:08:06,336 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2021-11-23 17:08:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 17:08:06,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:08:06,337 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:08:06,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:06,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:06,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:08:06,753 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:08:06,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:08:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash 9944779, now seen corresponding path program 4 times [2021-11-23 17:08:06,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:08:06,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116935779] [2021-11-23 17:08:06,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 17:08:06,754 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:08:06,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:08:06,754 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:08:06,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 17:08:07,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 17:08:07,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:08:07,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-23 17:08:07,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:07,209 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:08:07,209 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:08:07,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:08:07,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:07,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:08:07,270 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:08:07,270 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 16 treesize of output 22 [2021-11-23 17:08:07,276 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 3 [2021-11-23 17:08:07,307 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:08:07,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-23 17:08:07,377 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:08:07,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:08:07,436 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:08:07,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-11-23 17:08:07,514 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:08:07,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-23 17:08:07,583 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:08:07,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 27 [2021-11-23 17:08:07,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:08:07,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:07,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:07,761 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 19 treesize of output 23 [2021-11-23 17:08:07,784 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-23 17:08:07,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-11-23 17:08:07,860 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:08:07,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:08:07,866 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 [2021-11-23 17:08:07,879 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 3 [2021-11-23 17:08:07,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:07,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:08,061 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:08,061 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 18 treesize of output 22 [2021-11-23 17:08:08,076 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_178| (_ BitVec 32)) (v_arrayElimArr_49 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2984 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_49 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2984) |v_ULTIMATE.start_main_~end~0#1.base_178| v_arrayElimArr_49) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:08:08,130 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2978 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_178| (_ BitVec 32)) (v_arrayElimArr_49 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2984 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_49 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2980) v_ArrVal_2978 v_ArrVal_2984) |v_ULTIMATE.start_main_~end~0#1.base_178| v_arrayElimArr_49) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ArrVal_2978))))))) is different from false [2021-11-23 17:08:08,314 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2976 (_ BitVec 32)) (v_ArrVal_2980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2978 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_178| (_ BitVec 32)) (v_ArrVal_2974 (_ BitVec 1)) (v_arrayElimArr_49 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2984 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_2974) (_ bv1 1)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_49 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_ArrVal_2976 v_ArrVal_2974) v_ArrVal_2978)))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2973) v_ArrVal_2976 v_ArrVal_2980) v_ArrVal_2978 v_ArrVal_2984) |v_ULTIMATE.start_main_~end~0#1.base_178| v_arrayElimArr_49) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ArrVal_2976))))))) is different from false [2021-11-23 17:08:08,604 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_181| (_ BitVec 32)) (v_ArrVal_2969 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2971 (_ BitVec 1)) (v_ArrVal_2976 (_ BitVec 32)) (v_ArrVal_2980 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2978 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_178| (_ BitVec 32)) (v_ArrVal_2974 (_ BitVec 1)) (v_arrayElimArr_49 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2984 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_181| v_ArrVal_2971))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store .cse0 v_ArrVal_2976 v_ArrVal_2974) v_ArrVal_2978)))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_2974) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_181|)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_49 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 v_ArrVal_2976)))))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_2969) |v_ULTIMATE.start_main_~end~0#1.base_181| v_ArrVal_2973) v_ArrVal_2976 v_ArrVal_2980) v_ArrVal_2978 v_ArrVal_2984) |v_ULTIMATE.start_main_~end~0#1.base_178| v_arrayElimArr_49) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2021-11-23 17:08:09,829 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_181| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_182| (_ BitVec 32)) (v_ArrVal_2969 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2971 (_ BitVec 1)) (v_ArrVal_2965 (_ BitVec 32)) (v_ArrVal_2976 (_ BitVec 32)) (v_ArrVal_2978 (_ BitVec 32)) (v_ArrVal_2974 (_ BitVec 1)) (v_ArrVal_2967 (_ BitVec 1)) (v_ArrVal_2980 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_178| (_ BitVec 32)) (v_arrayElimArr_49 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2973 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2984 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_182| v_ArrVal_2967))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_181| v_ArrVal_2971))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select .cse0 v_ArrVal_2976)))))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_2974) (_ bv1 1)))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_49 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_181|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_2965)) |v_ULTIMATE.start_main_~end~0#1.base_182| v_ArrVal_2969) |v_ULTIMATE.start_main_~end~0#1.base_181| v_ArrVal_2973) v_ArrVal_2976 v_ArrVal_2980) v_ArrVal_2978 v_ArrVal_2984) |v_ULTIMATE.start_main_~end~0#1.base_178| v_arrayElimArr_49) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_182|)))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store .cse0 v_ArrVal_2976 v_ArrVal_2974) v_ArrVal_2978)))))))))) is different from false [2021-11-23 17:08:09,871 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:08:09,872 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 1 [2021-11-23 17:08:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 17:08:09,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:08:09,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116935779] [2021-11-23 17:08:09,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116935779] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:08:09,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1737053125] [2021-11-23 17:08:09,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 17:08:09,881 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:08:09,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:08:09,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:08:09,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-23 17:08:10,486 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 17:08:10,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:08:10,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-23 17:08:10,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:10,531 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:08:10,532 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:08:10,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:08:10,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:10,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:08:10,584 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:08:10,584 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 16 treesize of output 22 [2021-11-23 17:08:10,594 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 3 [2021-11-23 17:08:10,631 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:08:10,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-23 17:08:10,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:10,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:10,697 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 19 treesize of output 23 [2021-11-23 17:08:10,740 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 17:08:10,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 17:08:10,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:10,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:10,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:08:11,033 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-23 17:08:11,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 72 [2021-11-23 17:08:11,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:08:11,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:11,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:11,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:08:11,672 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-23 17:08:11,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 47 [2021-11-23 17:08:11,757 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:08:11,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:08:11,765 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 [2021-11-23 17:08:11,776 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 3 [2021-11-23 17:08:11,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:11,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:11,866 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:11,866 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 18 treesize of output 22 [2021-11-23 17:08:11,881 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_52 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3151 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_190| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3151) |v_ULTIMATE.start_main_~end~0#1.base_190| v_arrayElimArr_52) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (select v_arrayElimArr_52 (_ bv4 32)) ~unnamed1~0~BLACK)))) is different from false [2021-11-23 17:08:11,935 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3147 (_ BitVec 32)) (v_arrayElimArr_52 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3151 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_190| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3148) v_ArrVal_3147 v_ArrVal_3151) |v_ULTIMATE.start_main_~end~0#1.base_190| v_arrayElimArr_52) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ArrVal_3147))))) (not (= (select v_arrayElimArr_52 (_ bv4 32)) ~unnamed1~0~BLACK)))) is different from false [2021-11-23 17:08:12,173 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_192| (_ BitVec 32)) (v_ArrVal_3147 (_ BitVec 32)) (v_arrayElimArr_52 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3151 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_190| (_ BitVec 32)) (v_ArrVal_3142 (_ BitVec 1))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_192|)))) (not (= (_ bv0 1) (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_192| v_ArrVal_3142) v_ArrVal_3147))))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3144) |v_ULTIMATE.start_main_~end~0#1.base_192| v_ArrVal_3148) v_ArrVal_3147 v_ArrVal_3151) |v_ULTIMATE.start_main_~end~0#1.base_190| v_arrayElimArr_52) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_3142)))) (not (= (select v_arrayElimArr_52 (_ bv4 32)) ~unnamed1~0~BLACK)))) is different from false [2021-11-23 17:08:12,560 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_192| (_ BitVec 32)) (v_ArrVal_3147 (_ BitVec 32)) (v_arrayElimArr_52 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3139 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3140 (_ BitVec 1)) (v_ArrVal_3151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3137 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_190| (_ BitVec 32)) (v_ArrVal_3142 (_ BitVec 1))) (let ((.cse0 (store |c_#valid| v_ArrVal_3137 v_ArrVal_3140))) (or (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_ArrVal_3137))))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_192| v_ArrVal_3142) v_ArrVal_3147))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_192|)))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_3140) (_ bv1 1)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3139) v_ArrVal_3137 v_ArrVal_3144) |v_ULTIMATE.start_main_~end~0#1.base_192| v_ArrVal_3148) v_ArrVal_3147 v_ArrVal_3151) |v_ULTIMATE.start_main_~end~0#1.base_190| v_arrayElimArr_52) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_3142)))) (not (= (select v_arrayElimArr_52 (_ bv4 32)) ~unnamed1~0~BLACK))))) is different from false [2021-11-23 17:08:13,392 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_192| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_194| (_ BitVec 32)) (v_ArrVal_3148 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3139 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3151 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_190| (_ BitVec 32)) (v_ArrVal_3135 (_ BitVec 32)) (v_ArrVal_3147 (_ BitVec 32)) (v_arrayElimArr_52 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3133 (_ BitVec 1)) (v_ArrVal_3140 (_ BitVec 1)) (v_ArrVal_3137 (_ BitVec 32)) (v_ArrVal_3142 (_ BitVec 1))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_194| v_ArrVal_3133))) (let ((.cse0 (store .cse1 v_ArrVal_3137 v_ArrVal_3140))) (or (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_3133) (_ bv1 1)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_3135)) |v_ULTIMATE.start_main_~end~0#1.base_194| v_ArrVal_3139) v_ArrVal_3137 v_ArrVal_3144) |v_ULTIMATE.start_main_~end~0#1.base_192| v_ArrVal_3148) v_ArrVal_3147 v_ArrVal_3151) |v_ULTIMATE.start_main_~end~0#1.base_190| v_arrayElimArr_52) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_192| v_ArrVal_3142) v_ArrVal_3147))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_192|))))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_3140) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse1 v_ArrVal_3137))))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_194|)))))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_3142)))) (not (= (select v_arrayElimArr_52 (_ bv4 32)) ~unnamed1~0~BLACK)))))) is different from false [2021-11-23 17:08:13,439 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:08:13,439 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 1 [2021-11-23 17:08:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 17:08:13,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1737053125] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:08:13,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541548025] [2021-11-23 17:08:13,441 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 17:08:13,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:08:13,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:08:13,442 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:08:13,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-23 17:08:13,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 17:08:13,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 17:08:13,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-23 17:08:13,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:13,735 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-23 17:08:13,736 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 1 case distinctions, treesize of input 9 treesize of output 18 [2021-11-23 17:08:13,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 17:08:13,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:13,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2021-11-23 17:08:13,795 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:08:13,796 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 16 treesize of output 22 [2021-11-23 17:08:13,801 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 3 [2021-11-23 17:08:13,832 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 17:08:13,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2021-11-23 17:08:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:13,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:13,887 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 19 treesize of output 23 [2021-11-23 17:08:13,938 INFO L354 Elim1Store]: treesize reduction 30, result has 45.5 percent of original size [2021-11-23 17:08:13,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 17:08:14,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:14,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:14,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:08:14,132 INFO L354 Elim1Store]: treesize reduction 45, result has 45.1 percent of original size [2021-11-23 17:08:14,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 67 [2021-11-23 17:08:14,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-11-23 17:08:14,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:14,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:14,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2021-11-23 17:08:14,809 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-23 17:08:14,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 52 treesize of output 58 [2021-11-23 17:08:14,880 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-11-23 17:08:14,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 34 [2021-11-23 17:08:14,887 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 [2021-11-23 17:08:14,909 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 3 [2021-11-23 17:08:14,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:14,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:15,015 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:15,015 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 18 treesize of output 22 [2021-11-23 17:08:15,031 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_202| (_ BitVec 32)) (v_arrayElimArr_55 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_55 (_ bv4 32)))) (= ~unnamed1~0~BLACK (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3317) |v_ULTIMATE.start_main_~end~0#1.base_202| v_arrayElimArr_55) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:08:15,086 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3313 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_202| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_203| (_ BitVec 32)) (v_arrayElimArr_55 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_55 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_203|)))) (= (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3313) |v_ULTIMATE.start_main_~end~0#1.base_203| v_ArrVal_3317) |v_ULTIMATE.start_main_~end~0#1.base_202| v_arrayElimArr_55) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK))) is different from false [2021-11-23 17:08:15,266 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3309 (_ BitVec 1)) (v_ArrVal_3313 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3310 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_202| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_203| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_204| (_ BitVec 32)) (v_arrayElimArr_55 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_55 (_ bv4 32)))) (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_204| v_ArrVal_3309) |v_ULTIMATE.start_main_~end~0#1.base_203|)))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_3309)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_204|)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3310) |v_ULTIMATE.start_main_~end~0#1.base_204| v_ArrVal_3313) |v_ULTIMATE.start_main_~end~0#1.base_203| v_ArrVal_3317) |v_ULTIMATE.start_main_~end~0#1.base_202| v_arrayElimArr_55) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 17:08:15,541 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3308 (_ BitVec 1)) (v_ArrVal_3309 (_ BitVec 1)) (v_ArrVal_3313 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3310 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_202| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_203| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_204| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_205| (_ BitVec 32)) (v_arrayElimArr_55 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_205| v_ArrVal_3308))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_205|))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_55 (_ bv4 32)))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_3309)))) (not (= (_ bv0 1) (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_204| v_ArrVal_3309) |v_ULTIMATE.start_main_~end~0#1.base_203|)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_3308) (_ bv1 1)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3305) |v_ULTIMATE.start_main_~end~0#1.base_205| v_ArrVal_3310) |v_ULTIMATE.start_main_~end~0#1.base_204| v_ArrVal_3313) |v_ULTIMATE.start_main_~end~0#1.base_203| v_ArrVal_3317) |v_ULTIMATE.start_main_~end~0#1.base_202| v_arrayElimArr_55) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_204|))))))) is different from false [2021-11-23 17:08:16,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3317 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3313 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3305 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3310 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3301 (_ BitVec 32)) (v_ArrVal_3308 (_ BitVec 1)) (v_ArrVal_3309 (_ BitVec 1)) (v_ArrVal_3303 (_ BitVec 1)) (|v_ULTIMATE.start_main_~end~0#1.base_202| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_203| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_204| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_205| (_ BitVec 32)) (v_arrayElimArr_55 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~end~0#1.base_206| (_ BitVec 32))) (let ((.cse1 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_206| v_ArrVal_3303))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_205| v_ArrVal_3308))) (or (not (= (_ bv0 1) (bvneg (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_204| v_ArrVal_3309) |v_ULTIMATE.start_main_~end~0#1.base_203|))))) (not (= ~unnamed1~0~BLACK (select v_arrayElimArr_55 (_ bv4 32)))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg v_ArrVal_3309)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_206|)))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_3303) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_205|)))) (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_204|))))) (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_3308) (_ bv1 1)))) (= ~unnamed1~0~BLACK (select (select (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_3301)) |v_ULTIMATE.start_main_~end~0#1.base_206| v_ArrVal_3305) |v_ULTIMATE.start_main_~end~0#1.base_205| v_ArrVal_3310) |v_ULTIMATE.start_main_~end~0#1.base_204| v_ArrVal_3313) |v_ULTIMATE.start_main_~end~0#1.base_203| v_ArrVal_3317) |v_ULTIMATE.start_main_~end~0#1.base_202| v_arrayElimArr_55) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) is different from false [2021-11-23 17:08:16,330 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-23 17:08:16,331 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 1 [2021-11-23 17:08:16,332 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 17:08:16,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541548025] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:08:16,333 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:08:16,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10, 10, 10, 10] total 28 [2021-11-23 17:08:16,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305714465] [2021-11-23 17:08:16,333 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:08:16,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-23 17:08:16,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:08:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-23 17:08:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=122, Unknown=15, NotChecked=540, Total=756 [2021-11-23 17:08:16,335 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 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) [2021-11-23 17:08:17,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:08:17,335 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2021-11-23 17:08:17,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 17:08:17,336 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 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 [2021-11-23 17:08:17,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:08:17,337 INFO L225 Difference]: With dead ends: 73 [2021-11-23 17:08:17,337 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 17:08:17,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 15 IntricatePredicates, 3 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=126, Invalid=223, Unknown=17, NotChecked=690, Total=1056 [2021-11-23 17:08:17,339 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 28 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 599 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 17:08:17,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 224 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 58 Invalid, 0 Unknown, 599 Unchecked, 0.3s Time] [2021-11-23 17:08:17,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 17:08:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 24. [2021-11-23 17:08:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 23 states have internal predecessors, (27), 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) [2021-11-23 17:08:17,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-23 17:08:17,345 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2021-11-23 17:08:17,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:08:17,346 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-23 17:08:17,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 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) [2021-11-23 17:08:17,346 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-23 17:08:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 17:08:17,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:08:17,347 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:08:17,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:17,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:17,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2021-11-23 17:08:17,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt [2021-11-23 17:08:17,963 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:08:17,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:08:17,963 INFO L85 PathProgramCache]: Analyzing trace with hash -270590612, now seen corresponding path program 1 times [2021-11-23 17:08:17,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:08:17,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620568756] [2021-11-23 17:08:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:17,964 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:08:17,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:08:17,964 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:08:17,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 17:08:18,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:18,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 17:08:18,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:18,259 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 17:08:18,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 61 [2021-11-23 17:08:18,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:18,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 17 [2021-11-23 17:08:18,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:18,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 23 [2021-11-23 17:08:18,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:18,358 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 30 treesize of output 24 [2021-11-23 17:08:18,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:18,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 13 [2021-11-23 17:08:18,505 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 17:08:18,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 61 [2021-11-23 17:08:18,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:18,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 17 [2021-11-23 17:08:18,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:18,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 23 [2021-11-23 17:08:18,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:18,556 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 23 treesize of output 13 [2021-11-23 17:08:18,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:18,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:18,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:18,911 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:08:18,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620568756] [2021-11-23 17:08:18,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620568756] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:08:18,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1926399292] [2021-11-23 17:08:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:18,912 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:08:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:08:18,912 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:08:18,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2021-11-23 17:08:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:19,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 17:08:19,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:19,388 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 17:08:19,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 61 [2021-11-23 17:08:19,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:19,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 17 [2021-11-23 17:08:19,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:19,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 23 [2021-11-23 17:08:19,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:19,465 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 23 treesize of output 13 [2021-11-23 17:08:19,613 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 17:08:19,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 61 [2021-11-23 17:08:19,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:19,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 17 [2021-11-23 17:08:19,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:19,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 23 [2021-11-23 17:08:19,713 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 30 treesize of output 24 [2021-11-23 17:08:19,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:19,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 13 [2021-11-23 17:08:19,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:19,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:19,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:20,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1926399292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:08:20,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506970540] [2021-11-23 17:08:20,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:20,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 17:08:20,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:08:20,087 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 17:08:20,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-23 17:08:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:20,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 17:08:20,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:20,416 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 17:08:20,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 61 [2021-11-23 17:08:20,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:20,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 17 [2021-11-23 17:08:20,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:20,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 23 [2021-11-23 17:08:20,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:20,523 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 30 treesize of output 24 [2021-11-23 17:08:20,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:20,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 13 [2021-11-23 17:08:20,624 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-23 17:08:20,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 61 [2021-11-23 17:08:20,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:20,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 13 treesize of output 17 [2021-11-23 17:08:20,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:20,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 23 [2021-11-23 17:08:20,714 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 30 treesize of output 24 [2021-11-23 17:08:20,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:20,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 19 treesize of output 13 [2021-11-23 17:08:20,847 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 15 treesize of output 7 [2021-11-23 17:08:20,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-23 17:08:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:20,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:20,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506970540] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:08:20,961 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 17:08:20,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-11-23 17:08:20,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768037992] [2021-11-23 17:08:20,962 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 17:08:20,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 17:08:20,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:08:20,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 17:08:20,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-23 17:08:20,963 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2021-11-23 17:08:21,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:08:21,587 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2021-11-23 17:08:21,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 17:08:21,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 16 [2021-11-23 17:08:21,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:08:21,589 INFO L225 Difference]: With dead ends: 47 [2021-11-23 17:08:21,589 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 17:08:21,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-23 17:08:21,590 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 17:08:21,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 68 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 17:08:21,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 17:08:21,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 17:08:21,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 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) [2021-11-23 17:08:21,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-11-23 17:08:21,598 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2021-11-23 17:08:21,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:08:21,599 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-11-23 17:08:21,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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) [2021-11-23 17:08:21,600 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-11-23 17:08:21,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 17:08:21,600 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:08:21,601 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:08:21,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:21,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-23 17:08:22,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-23 17:08:22,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:08:22,216 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 17:08:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:08:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1451772591, now seen corresponding path program 1 times [2021-11-23 17:08:22,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:08:22,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876578010] [2021-11-23 17:08:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:08:22,217 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:08:22,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:08:22,218 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:08:22,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 17:08:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:08:22,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 17:08:22,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:08:22,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:08:22,652 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 17:08:22,652 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-23 17:08:22,728 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 17:08:22,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 59 [2021-11-23 17:08:22,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-23 17:08:22,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 17:08:22,778 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-23 17:08:22,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-11-23 17:08:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:22,881 INFO L354 Elim1Store]: treesize reduction 35, result has 34.0 percent of original size [2021-11-23 17:08:22,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 61 [2021-11-23 17:08:22,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:22,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:08:22,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 34 [2021-11-23 17:08:22,922 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 16 treesize of output 15 [2021-11-23 17:08:22,969 INFO L354 Elim1Store]: treesize reduction 20, result has 72.6 percent of original size [2021-11-23 17:08:22,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 75 [2021-11-23 17:08:23,268 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 60 treesize of output 44 [2021-11-23 17:08:23,354 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 17:08:23,354 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 27 [2021-11-23 17:08:23,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:08:23,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:08:23,530 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:23,530 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 40 treesize of output 41 [2021-11-23 17:08:23,556 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3528 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_71 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3532 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3531 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_71 |c_ULTIMATE.start_main_~end~0#1.offset|))) (or (not (= (bvneg (bvneg (select |c_#valid| .cse0))) (_ bv0 1))) (not (= |c_ULTIMATE.start_main_~null~0#1.base| (select (let ((.cse1 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_71) .cse0 v_ArrVal_3531))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_3528) .cse0 v_ArrVal_3532) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))))) is different from false [2021-11-23 17:08:23,579 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:23,580 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 64 treesize of output 65 [2021-11-23 17:08:23,591 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:23,591 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 68 treesize of output 61 [2021-11-23 17:08:23,803 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:23,804 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 7 new quantified variables, introduced 10 case distinctions, treesize of input 946 treesize of output 849 [2021-11-23 17:08:23,865 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:23,866 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 2112 treesize of output 1655 [2021-11-23 17:08:24,070 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:24,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1666 treesize of output 1516 [2021-11-23 17:08:24,121 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 1433 treesize of output 1393 [2021-11-23 17:08:24,407 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:08:24,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 939 treesize of output 913 [2021-11-23 17:08:24,492 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 731 treesize of output 669 [2021-11-23 17:11:41,808 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_367 (_ BitVec 32)) (v_ArrVal_3522 (_ BitVec 1)) (v_arrayElimCell_373 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvadd (bvneg v_ArrVal_3522) (_ bv1 1)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| v_arrayElimCell_367 v_ArrVal_3522) v_arrayElimCell_373)))))) (and (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~end~0#1.base|) (not (= v_arrayElimCell_373 |c_ULTIMATE.start_main_~null~0#1.base|)) (not (= v_arrayElimCell_373 |c_ULTIMATE.start_main_~list~0#1.base|)) (= |c_ULTIMATE.start_main_~end~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) (not (= v_arrayElimCell_367 |c_ULTIMATE.start_main_~list~0#1.base|))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_arrayElimCell_367))))))) is different from false [2021-11-23 17:11:41,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 17:11:41,836 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:11:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876578010] [2021-11-23 17:11:41,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876578010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 17:11:41,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1306252687] [2021-11-23 17:11:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:11:41,838 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 17:11:41,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 [2021-11-23 17:11:41,845 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 17:11:41,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5b6910-3032-4e73-918e-a6ce0e517b8b/bin/utaipan-fb15Y9Yzbl/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2021-11-23 17:11:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:11:42,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-23 17:11:42,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:11:42,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:11:42,335 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-23 17:11:42,335 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-23 17:11:42,436 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 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-23 17:11:42,460 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:11:42,460 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 14 treesize of output 20 [2021-11-23 17:11:42,468 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 [2021-11-23 17:11:42,486 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-11-23 17:11:42,513 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-23 17:11:42,513 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 14 treesize of output 20 [2021-11-23 17:11:42,524 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 [2021-11-23 17:11:42,574 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 17:11:42,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 49 [2021-11-23 17:11:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:42,854 INFO L354 Elim1Store]: treesize reduction 74, result has 26.7 percent of original size [2021-11-23 17:11:42,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 125 treesize of output 124 [2021-11-23 17:11:42,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:42,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:42,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2021-11-23 17:11:42,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 11 treesize of output 15 [2021-11-23 17:11:42,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:42,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:42,949 INFO L354 Elim1Store]: treesize reduction 13, result has 23.5 percent of original size [2021-11-23 17:11:42,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 31 [2021-11-23 17:11:42,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 treesize of output 27 [2021-11-23 17:11:42,984 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 19 treesize of output 31 [2021-11-23 17:11:43,013 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 31 treesize of output 43 [2021-11-23 17:11:43,046 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 17:11:43,089 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-23 17:11:43,089 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 123 treesize of output 75 [2021-11-23 17:11:43,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 23 treesize of output 19 [2021-11-23 17:11:43,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:11:43,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2021-11-23 17:11:44,069 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-23 17:11:44,069 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 17:11:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 17:11:44,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 17:11:44,498 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:44,499 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 126 treesize of output 123 [2021-11-23 17:11:45,169 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:45,170 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 217 treesize of output 193 [2021-11-23 17:11:45,192 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:45,192 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 185 treesize of output 145 [2021-11-23 17:11:45,955 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:45,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 5498 treesize of output 4868 [2021-11-23 17:11:46,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:11:46,197 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:46,197 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 18568 treesize of output 17134 [2021-11-23 17:11:46,782 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:46,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 38722 treesize of output 37006 [2021-11-23 17:11:48,939 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 33480 treesize of output 33054 [2021-11-23 17:11:49,896 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:11:49,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 33397 treesize of output 31163 [2021-11-23 17:12:02,869 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 8 treesize of output 4 [2021-11-23 17:12:22,438 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 8 treesize of output 4 [2021-11-23 17:12:22,539 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 8 treesize of output 4 [2021-11-23 17:12:28,660 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 6 treesize of output 4 [2021-11-23 17:12:50,697 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 6 treesize of output 4 [2021-11-23 17:12:54,931 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 4 [2021-11-23 17:12:55,958 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 6 treesize of output 4 [2021-11-23 17:12:56,294 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 8 treesize of output 4 [2021-11-23 17:13:04,377 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 8 treesize of output 4 [2021-11-23 17:13:18,003 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 8 treesize of output 4 [2021-11-23 17:13:29,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:29,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:29,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 433 treesize of output 425 [2021-11-23 17:13:29,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:29,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:29,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 433 treesize of output 425 [2021-11-23 17:13:30,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:30,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:30,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:30,356 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:13:30,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 453 treesize of output 451 [2021-11-23 17:13:31,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:31,343 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 20 treesize of output 18 [2021-11-23 17:13:32,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 120 [2021-11-23 17:13:34,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:34,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:34,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 433 treesize of output 425 [2021-11-23 17:13:34,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:34,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:34,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:35,041 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:13:35,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 459 treesize of output 457 [2021-11-23 17:13:36,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:36,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:36,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 433 treesize of output 425 [2021-11-23 17:13:37,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:37,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:37,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 433 treesize of output 425 [2021-11-23 17:13:41,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:13:41,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2211 treesize of output 2223 [2021-11-23 17:14:00,971 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:14:00,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1639 treesize of output 1659 [2021-11-23 17:14:31,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:14:31,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2168 treesize of output 2182 [2021-11-23 17:14:41,868 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-23 17:14:41,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 259 treesize of output 249 [2021-11-23 17:14:42,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:42,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:42,510 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 52 treesize of output 50 [2021-11-23 17:14:42,715 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 17:14:42,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 346 treesize of output 336 [2021-11-23 17:14:43,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:14:43,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:14:43,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 17:15:27,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:15:27,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 898 treesize of output 846 [2021-11-23 17:15:33,006 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 6 treesize of output 4 [2021-11-23 17:15:33,099 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 100 treesize of output 84 [2021-11-23 17:15:33,461 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:15:33,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 29 [2021-11-23 17:15:33,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 65 [2021-11-23 17:15:34,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 53 [2021-11-23 17:15:34,887 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 17:15:34,900 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-23 17:15:35,009 INFO L354 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2021-11-23 17:15:35,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 24 [2021-11-23 17:15:35,108 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 69 treesize of output 55 [2021-11-23 17:15:35,661 INFO L354 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2021-11-23 17:15:35,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 32 [2021-11-23 17:15:35,735 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 105 treesize of output 87 [2021-11-23 17:15:36,414 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:15:36,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 325 treesize of output 289 [2021-11-23 17:15:38,387 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 17:15:38,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 180 treesize of output 164 [2021-11-23 17:15:39,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 155 [2021-11-23 17:17:22,314 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 5966 treesize of output 5812